Publications
Send reprint request to freude@uni-leipzig.de
226. S.S. Arzumanov, A.A. Gabrienko, A. V. Toktarev, D. Freude, J. Haase, A.G. Stepanov,
H/D Exchange of n‑Butane on In-Modified Zeolite BEA Investigated by 1H Magic-Angle Spinning Nuclear Magnetic Resonance In Situ,
J. Phys. Chem. C 127 (2023) 21122–21131. Request code: arzumanov2023a
225. M. Avramovska, D. Freude, J. Haase, A.V. Toktarev, S.S. Arzumanov, A.A. Gabrienko, A.G. Stepanov, Quantitative 67Zn, 27Al and 1H MAS NMR spectroscopy for the characterization of Zn species in ZSM-5 catalysts,
Phys. Chem. Chem. Phys. 25 (2023) 28043–28051. Request code: avramovska2023b
224. M. Avramovska, D. Freude, W. Schwieger, T. Fey, J. Kärger, J. Haase, NMR Studies of the Rehydroxylation of Ceramic Materials with Respect to Rehydroxylation Dating,
J. Phys. Chem. C 127 (2023) 19833–19840. Request code: avramovska2023a
223. S.S. Arzumanov, A.A. Gabrienko, D. Freude, J. Haase, A.G. Stepanov,
Tuning the Mechanism of H/D Exchange for Isobutane on H-BEA by Loading Zn Species in Zeolite,
Chem. Eur. J. 29 (2023) e202202962. Request code: arzumanov2023
222. S.S. Arzumanov, A.A. Gabrienko, A. V. Toktarev, D. Freude, J. Haase, A.G. Stepanov,
H/D Exchange of Propane on Indium-Modified Zeolite BEA Investigated by 1H MAS NMR In Situ,
J. Phys. Chem. C 126 (2022) 19766–19775. Request code: arzumanov2022
221. A.A. Gabrienko, S.S. Arzumanov, A.V. Toktarev, I.P. Prosvirin, D. Freude, J. Haase, A.G. Stepanov,
Propane Transformation on In-Modified Zeolite BEA,
J. Phys. Chem. C 126 (2022) 16204–16214. Request code: gabrienko2022a
220. M. Avramovska, D. Freude, W. Schwieger, C. Song, J. Kärger, J. Haase,
NMR Studies of the Dehydroxylation and Rehydroxylation (RHX) of Clays with Respect to the RHX Dating of Ceramic Materials,
J. Phys. Chem. C 125 (2021) 26274–26283. Request code: avramovska2021a
219. J. Huang, M. Dyballa, D. Freude, Y.J. Jiang, W. Wang,
Preface for the Virtual Special Issue on Advanced Characterization by Solid-State NMR and In Situ Technology, in Recognition of Michael Hunger's 65th Birthday,
J. Phys. Chem. C 125 (2021) 20741–20744. Request code: huang2021
218. A.A. Gabrienko, Z.N. Lashchinskaya, S.S. Arzumanov, A.V. Toktarev, D. Freude, J. Haase, A.G. Stepanov,
Isobutane Transformation to Aromatics on Zn-Modified Zeolites: Intermediates and the Effect of Zn2+ and ZnO Species on the Reaction Occurrence Revealed by 13C MAS NMR,
ChemPhysChem 23 (2022) e202100587. Request code: gabrienko2022
217. A.A. Gabrienko, Z.N. Lashchinskaya, S.S. Arzumanov, A.V. Toktarev, D. Freude, J. Haase, A.G. Stepanov,
Isobutene Transformation to Aromatics on Zn-Modified Zeolite: Particular Effects of Zn2+ and ZnO Species on the Reaction Occurrence Revealed with Solid-State NMR and FTIR Spectroscopy,
J. Phys. Chem. C 125 (2021) 15343–15353. Request code: gabrienko2021b
216. A.A. Gabrienko, Z.N. Lashchinskaya, S.S. Arzumanov, A.V. Toktarev, D. Freude, J. Haase, A.G. Stepanov,
1H MAS NMR In Situ Reaction Monitoring Reveals the Particular Effects of Zn2+ and ZnO Species on the Kinetics of Isobutane Transformation on Zn-Modified Zeolites,
J. Phys. Chem. C 125 (2021) 21471–21480. Request code: gabrienko2021c
215. M. Avramovska, C. Chmelik, A. Derkowski, A. Fantalkin, D. Freude, J. Haase, V. Hare, J. Kärger, A. Kuligiewicz, M. Moinester,
Searching for the Fundamentals of Rehydroxylation Dating of Archaeological Ceramics via NMR and IR Microscopy,
J. Am. Ceram. Soc.104 (2021) 5328–5340. Request code: avramovska2021
214. A.A. Gabrienko, A.A. Kolganov, S.S. Arzumanov, S.A. Yashnik, V.V. Kriventsov, D. Freude, A.G. Stepanov,
Effect of Copper State in Cu/H-ZSM-5 on Methane Activation by Bronsted Acid Sites, Studied by 1H MAS NMR In Situ Monitoring the H/D Hydrogen Exchange of the Alkane with Bronsted Acid Sites,
J. Phys. Chem. C 125 (2021) 2182–2193. Request code: gabrienko2021
2013. D.I. Kolokolov, D. Freude, A.G. Stepanov,
Dynamics in Nanoporous Materials Probed by 2H Solid State NMR: Estimation of Self-Diffusion Coefficients,
Adsorption 27 (2021) 841–855. Request code: kolokolov2020a
212. J. Kärger, M. Avramovska, D. Freude, J. Haase, S. Hwang, R. Valiullin,
Pulsed Field Gradient NMR Diffusion Measurement in Nanoporous Materials,
Adsorption 27 (2021) 453–484. Request code: Kärger2021
211. Z.N. Lashchinskaya, A.A. Gabrienko, S.S. Arzumanov, A.A. Kolganov, A.V. Toktarev, D. Freude, J. Haase, A.G. Stepanov,
Which Species, Zn2+ Cations or ZnO Clusters, Are More Efficient for Olefin Aromatization? C-13 Solid-State NMR Investigation of n-But-1-ene Transformation on Zn-Modified Zeolite,
ACS Catalysis 10 (2020) 14224–14233. Request code: lashchinskaya2020
210. A.A. Gabrienko, S.S. Arzumanov, Z.N. Lashchinskaya, A.V. Toktarev, D. Freude, J. Haase, A.G. Stepanov,
n-Butane Transformation on Zn/H-BEA. The Effect of Different Zn Species (Zn2+ and ZnO) on the Reaction Performance,
J. Catal. 391 (2020) 69–79. Request code: gabrienko2020a
209. S.S. Arzumanov, A.A. Gabrienko, A.V. Toktarev, D.Freude, J. Haase, A.G. Stepanov,
Mechanism of H/D Hydrogen Exchange of n-Butane with Br nsted Acid Sites on Zn-Modified Zeolite: The Effect of Different Zn Species (Zn2+ and ZnO) on the Activation of Alkane C-H Bonds,
J. Phys. Chem. C 124 (2020) 20270–20279. Request code: arzumanov2020
208. A.E. Khudozhitkov, S.S. Arzumanov, D.I. Kolokolov, D. Freude, A.G. Stepanov,
Dynamics of Propene and Propane in ZIF-8 Probed by Solid-State 2H NMR,
Phys.Chem.Chem.Phys. 22 (2020) 5976–5984. Request code: khudozhitkov2020
207. A.A. Gabrienko, I.G. Danilova, S.S. Arzumanov, D. Freude, A.G. Stepanov,
Does the Zn2+ Species Introduced into H-ZSM-5 Zeolite Affect the Strength of Br nsted Acid Sites?
ChemCatChem 12 (2020) 478–487. Request code: gabrienko2020
206. S.S. Arzumanov, A.A. Gabrienko, A.V. Toktarev, Z.N. Lashchinskaya, D. Freude, J. Haase, A.G. Stepanov,
Propane Transformation on Zn-Modified Zeolite. Effect of the Nature of Zn Species on Alkane Aromatization and Hydrogenolysis,
J. Phys. Chem. C 123 (2019) 30473–30485. Request code: arzumanov2019a
205. S.S. Arzumanov, A.A. Gabrienko, A.V. Toktarev, D. Freude, J. Haase, A.G. Stepanov,
Propane activation on Zn-modified zeolite. The Effect of the Nature of Zn-Species on the Mechanism of H/D Hydrogen Exchange of the Alkane with Br nsted Acid Sites,
J. Catal. 378 (2019) 341–352. Request code: arzumanov2019
204. A.A. Gabrienko, S.S. Arzumanov, A.V. Toktarev, D. Freude, J. Haase, A.G. Stepanov,
Propylene Transformation on Zn-Modified Zeolite: Is There Any Difference in the Effect of Zn2+ Cations or ZnO Species on the Reaction Occurrence?
J. Phys. Chem. C 123 (2019) 27573–27583. Request code: gabrienko2019
203. A.E. Khudozhitkov, S.S. Arzumanov, D.I. Kolokolov, O.A. Kholdeeva, D. Freude, A.G. Stepanov,
Guests Like Gear Levers: Donor Binding to Coordinatively Unsaturated Metal Sites in MIL-101 Controls the Linkers Rotation,
Chem.: Eur. J. 25 (2019) 5163–5168. Request code: khudozhitkov2019a
202. J. Kärger, D. Freude, I. I. Ivanova, A. G. Stepanov,
Diffusion in Nanoporous Materials: from Paradigm Shift by Zhdanov Zeolites Till Recent Insight,
Pet. Chem. 59 (2019) 275–296. Request code: Kärger2019
201. D. Freude, N. Dvoyashkina, S.S. Arzumanov, D.I. Kolokolov, A.G. Stepanov, C. Chmelik, H. Jin, Y. Li, J. Kärger, J. Haase,
NMR Study of Host Structure and Guest Dynamics Investigated with Alkane-Alkene Mixtures in Metal Organic Frameworks ZIF-8,
J. Phys. Chem. C 123 (2019) 1904–1912. Request code: freude2019
200. J. Kärger, D. Freude, J. Haase,
Diffusion in Nanoporous Materials: Novel Insights by Combining MAS and PFG NMR,
Processes 6 (2018) 147. Request code: Kärger2018
199. A.A. Gabrienko, I.G. Danilova, S.S. Arzumanov, L.V. Pirutko, D. Freude, A.G. Stepanov,
Direct Measurement of Zeolite Br nsted Acidity by FTIR Spectroscopy: Solid-State 1H MAS NMR Approach for Reliable Determination of the Integrated Molar Absorption Coefficients,
J. Phys. Chem. C 122 (2018) 25386–25395. Request code: gabrienko2018
198. A. Lauerer, R. Kurzhals, H. Toufar, D. Freude, J. Kärger,
Tracing Compartment Exchange by NMR Diffusometry: Water in Lithiumexchanged Low-Silica X Zeolites,
J. Magn. Reson. 289 (2018) 1–11. Request code: lauerer2018
197. N. Dvoyashkina, D. Freude, A.G. Stepanov, W. Böhlmann, R. Krishna, J. Kärger, J. Haase,
Alkane/Alkene Mixture Diffusion in Silicalite-1 Studied by MAS PFG NMR,
Microporous Mesoporous Mater. 257 (2018) 128–134. Request code: dvoyashkina2018b
196. N. Dvoyashkina, C.F. Seidler, M. Wark, D. Freude, J. Haase,
Proton Mobility in Sulfonic Acid Functionalized Mesoporous Materials Studied by MAS PFG NMR Diffusometry and Impedance Spectroscopy,
Microporous Mesoporous Mater. 255 (2018) 140–147. Request code: dvoyashkina2018a
195. N. Dvoyashkina, D. Freude, S.S. Arzumanov, A.G. Stepanov,
Monitoring the Diffusivity of Light Hydrocarbons in a Mixture by Magic Angle Spinning Pulsed Field Gradient NMR:
Methane/Ethane/Ethene in ZIF-8,
J. Phys. Chem. C 121 (2017) 25372–25376. Request code: dvoyashkina2017
194. A.E. Khudozhitkov, H. Jobic, D.I. Kolokolov, D. Freude, J. Haase, A.G. Stepanov:
Probing the Guest-Mediated Structural Mobility in the UiO-66(Zr) Framework by 2H NMR Spectroscopy.
J. Phys. Chem. C 121 (2017) 11593–11600. Request code: khudozhitkov2017
193. D.I. Kolokolov, A.G. Maryasov, J. Ollivier, D. Freude, J. Haase, A.G. Stepanov, H. Jobic:
Uncovering the Rotation and Translational Mobility of Benzene Confined in UiO-66 (Zr) Metal-Organic Framework
by the 2H NMR-QENS Experimental Toolbox.
J. Phys. Chem. C 121 (2017) 2844–2857. Request code: kolokolov2017
192. A.A. Gabrienko, S.S. Arzumanov, A.V. Toktarev, I.G. Danilova, I.P. Prosvirin,
V.V. Kriventsov, V.I. Zaikovskii, D. Freude, A.G. Stepanov:
Different Efficiency of Zn2+ and ZnO Species for Methane Activation on Zn-Modified Zeolite.
ACS Catalysis 7 (2017) 1818–1830. Request code: gabrienko2017
191. S.S. Arzumanov, A.A. Gabrienko, D. Freude, A.G. Stepanov:
Competitive Pathways of Methane Activation on Zn2+-Modified ZSM-5 Zeolite.
H/D Hydrogen Exchange with Bronsted Acid Sites versus Dissociative Adsorption to Form Zn-Methyl Species.
Catal. Sci. & Techn. 6 (2016) 6381–6388. Request code: arzumanov2016
190. A.E. Khudozhitkov, H. Jobic, D. Freude, J. Haase, D.I. Kolokolov, A.G. Stepanov:
Ultraslow Dynamics of a Framework Linker in MIL-53 (Al) as a Sensor for Different Isomers of Xylene.
J. Phys. Chem. C 120 (2016) 21704–21709. Request code: khudozhitkov2016
189. D.I. Kolokolov, S.S. Arzumanov, D. Freude, J. Haase, A.G. Stepanov:
Mobility of Stable π-Complexes of Ethylene with Ag+ Cations in Ag/H-ZSM-5 Zeolite.
A 2H Solid-State NMR Study.
J. Phys. Chem. C 120 (2016) 4993–000. Request code: kolokolov2016
188. S.S. Arzumanov, D.I. Kolokolov, D. Freude, A.G. Stepanov:
Methane Mobility in Ag/H-ZSM-5 Zeolite in the Presence of Ethene.
A View Based on PFG 1H MAS NMR Analysis of Methane Diffusivity.
J. Phys. Chem. C 119 (2015) 18481–18486. Request code: arzumanov2015
187. M.V. Luzgin, D. Freude, J. Haase, A.G. Stepanov:
Methane Interaction with Zn2+-Exchanged Zeolite H-ZSM-5:
Study of Adsorption and Mobility by One- and Two-Dimensional Variable-Temperature 1H Solid-State NMR.
J. Phys. Chem. C 119 (2015) 14255–14261. Request code: luzgin2015
186. S.S. Arzumanov, I.B. Moroz, D. Freude, J. Haase, A.G. Stepanov:
Methane Activation on In-Modified ZSM-5 Zeolite.
H/D Hydrogen Exchange of the Alkane with Br nsted Acid Sites.
J. Phys. Chem. C 118 (2014) 14427–14432. Request code: arzumanov2014
185. D.I. Kolokolov, L. Diestel, J. Caro, D. Freude, A.G. Stepanov:
Rotational and Translational Motion of Benzene in ZIF‑8 Studied by2H NMR.
Estimation of Microscopic Self-Diffusivity and Its Comparison with Macroscopic Measurements.
J. Phys. Chem. C 118 (2014) 12873−12879. Request code: kolokolov2014
184. S. Beckert, F. Stallmach, H. Toufar, D. Freude, J. Kärger, J. Haase:
Tracing Water and Cation Diffusion in Hydrated Zeolites of Type Li-LSX by Pulsed Field Gradient NMR.
J. Phys. Chem. C 117 (2013) 24866−24872. Request code: beckert2013
183. P. Bottke, D. Freude, M. Wilkening:
Ultraslow Li Exchange Processes in Diamagnetic Li2ZrO3 As Monitored by EXSY NMR.
J. Phys. Chem. C 117 (2013) 8114-8119. Request code: bottke2013
182. D. Freude, S. Beckert, F. Stallmach, R. Kurzhals, D. Täschner, H. Toufar, J. Kärger, J. Haase:
Ion and water mobility in hydrated Li-LSX zeolite studied by 1H, 6Li and 7Li NMR spectroscopy and diffusometry.
Microporous Mesoporous Mater. 172 (2013) 174–181. Request code: freude2013
181. M. Sharifi, M. Wark, D. Freude, J.Haase:
Highly proton conducting sulfonic acid functionalized mesoporous materials studied by impedance spectroscopy,
MAS NMR spectroscopy and MAS PFG NMR diffusometry.
Microporous Mesoporous Mater. 156 (2012) 80–89. Request code: sharifi2012
180. C. Chmelik, D. Freude, H. Bux, J. Haase:
Ethene/ethane mixture diffusion in the MOF sieve ZIF-8 studied by MAS PFG NMR diffusometry.
Microporous Mesoporous Mater. 147 (2012) 135–141. Request code: chmelik2012
179. A. Düvel, E. Romanova, M. Sharifi, D. Freude, M. Wark, P. Heitjans, M. Wilkening:
Mechanically Induced Phase Transformation of γ-Al2O3 into α-Al2O3. Access to Structurally
Disordered γ-Al2O3 with a Controllable Amount of Pentacoordinated Al Sites.
J. Phys. Chem. C 115 (2011) 22770–22780. Request code: duevel2011
178. A.A. Gabrienko, S.S. Arzumanov, A.V. Toktarev, D. Freude, J. Haase, A.G. Stepanov:
Hydrogen HID Exchange and Activation of C(1)-n-C(4) Alkanes on Ga-Modified Zeolite BEA Studied
with 1H Magic Angle Spinning Nuclear Magnetic Resonance in Situ.
J. Phys. Chem. C 115 (2011) 13877–13886. Request code: gabrienko2011.pdf
177. A.A. Gabrienko, I.G. Danilova, S.S. Arzumanov, A.V. Toktarev, D. Freude, A.G. Stepanov:
Strong acidity of silanol groups of zeolite beta: Evidence from the studies by IR spectroscopy of adsorbed CO and 1H MAS NMR.
Microporous Mesoporous Mater. 131 (2010) 210–216. Request code: gabrienko2010a
176. A.A. Gabrienko, S.S. Arzumanov, D. Freude, A.G. Stepanov:
Propane Aromatization on Zn-Modified Zeolite BEA Studied by Solid-State NMR in Situ.
J. Phys. Chem. C 114 (2010) 12681–12688. Request code: gabrienko2010b
175. A.A. Gabrienko, S.S. Arzumanov, A.V. Toktarev, I.G. Danilova, D. Freude, A.G. Stepanov:
H/D exchange of molecular hydrogen with Br nsted acid sites of Zn- and Ga-modified zeolite BEA.
Phys. Chem. Chem. Phys. 12 (2010) 5149–5155. Request code: gabrienko2010
174. A. Bressel, J. Frey, U. Filek, B. Sulikowski, D. Freude, M. Hunger:
Oxygen coordination of aluminum cations in dehydrated AlPW12O40 investigated by solid-state NMR spectroscopy.
Chem. Phys. Lett. 487 (2010) 285–290. Request code: bressel2010
173. E. E. Romanova, F. Grinberg, A. Pampel, J. Kärger, D. Freude:
Diffusion studies in confined nematic liquid crystals by MAS PFG NMR.
J. Magn. Reson. 196 (2009) 110−114. Request code: romanova2009
172. E. E. Romanova, F. Scheffler, D. Freude:
Crystallization of zeolite MFI under supergravity, studied in situ by 11B MAS NMR spectroscopy.
Microporous Mesoporous Mater. 126 (2009) 268−271. Request code: romanovab2009
171. K. Ulrich, D. Freude, P. Galvosas, C. Krause, J. Kärger, J. Caro, P. Poladli, H. Papp:
Diffusion of aromatic guest molecules in zeolite NaX studied by pulsed field gradient NMR.
Microporous Mesoporous Mater. 120 (2009) 98−103. Request code: ulrich2009
170. S. S. Arzumanov, A. A. Gabrienko, D. Freude, A. G. Stepanov:
In situ high temperature MAS NMR study of the mechanisms of catalysis. Ethane aromatization on Zn-modified zeolite BEA,
Solid State Nucl. Magn. Reson. 35 (2009) 113−119. Request code: arzumanov2009
169. D. Schneider, H. Toufar, A. Samoson, D. Freude:
17O DOR and other solid-state NMR studies concerning the basic properties of zeolites LSX.
Solid State Nucl. Magn. Reson. 35 (2009) 87−92. Request code: schneider2009
168. A. G. Stepanov, S. S. Arzumanov, A. A. Gabrienko, V. N. Parmon, I. I. Ivanova, D. Freude:
Significant Influence of Zn on Activation of the C-H Bonds of Small Alkanes by Bronsted Acid Sites of Zeolite.
Chemphyschem 9 (2008) 2559−2563. Request code: stepanov2008a
167. M. Fernandez, A. Pampel, R. Takahashi, S. Sato, D. Freude, J. Kärger:
Revealing complex formation in acetone-nalkane mixtures by MAS PFG NMR diffusion measurement in nanoporous hosts.
Phys. Chem. Chem. Phys. 10 (2008) 4165−4171. Request code: fernandez2008
166. S. S. Arzumanov, A. C. Stepanov, D. Freude:
Kinetics of H/D exchange for n-butane on zeolite H-ZSM-5 studied with 1H MAS NMR in situ.
J. Phys. Chem. C 112 (2008) 11869−11874. Request code: arzumanov2008
165. E. E. Romanova, C. B. Krause, A. G. Stepanov, U. Wilczoke, W. Schmidt, J. M. van Baten, R. Krishna,
A. Pampel, J. Kärger, D. Freude:
1H NMR signal broadening in spectra of alkane molecules adsorbed on MFI-type zeolites.
Solid State Nucl. Magn. Reson. 33 (2008) 65−71. Request code: romanova2008
164. J. Kanellopoulos, C. Gottert, D. Schneider, B. Knorr, D. Prager, H. Ernst, D. Freude:
NMR investigation of proton mobility in zeolites.
J. Catal. 255 (2008) 68−78. Request code: kanellopoulos2008
163. A.G. Stepanov, S.S. Arzumanov, A.A. Gabrienko, A.V. Toktarev, V.N. Parmon, D. Freude:
Zn-promoted hydrogen exchange for methane and ethane on Zn/H-BEA zeolite: In situ 1H MAS NMR kinetic study.
J. Catal. 253 (2008) 11–21. Request code: stepanov2008
162. J. Kanellopoulos, D. Freude, A. Kentgens:
A practical comparison of MQMAS techniques.
Solid State Nucl. Magn. Reson. 32 (2007) 99−108. Request code: kanellopoulos2007
161. M. Fernandez, J. Kärger, D. Freude, A. Pampel, J.M. van Baten, R. Krishna:
Mixture diffusion in zeolites studied by MAS PFG NMR and molecular simulation.
Microporous Mesoporous Mater. 105 (2007) 124–131. Request code: fernandez2007
160. A.G. Stepanov, S. S. Arzumanov, V. N. Parmon, Yu. G. Kolyagin, I. I. Ivanova, D. Freude:
Regioselective H/D exchange of propane on Zn/H-MFI zeolite.
Catal. Lett. 114 (2007) 85−90. Request code: stepanov2007
159. A.G. Stepanov, V.N. Parmon, D. Freude:
In Situ NMR Spectroscopy in Heterogeneous Catalysis: Kinetic Study of Hydrocarbon Conversion Mechanisms.
Kinetics and Catalysis 48 (2007) 521–534. Request code: stepanov2007a.pdf"
Original Russian Text: A.G. Stepanov, V.N. Parmon, D. Freude:
Kinetika i Kataliz 48 (2007) 554–569.
158. A.G. Stepanov, S. S. Arzumanov, M. H. Ernst, D. Freude:
1H MAS NMR monitoring of the 13C-labeled carbon scrambling for propane in zeolite H-ZSM-5.
Chem. Phys. Lett. 420 (2006) 574−576. Request code: stepanov2006
157. J. Kanellopoulos, A. Unger, W. Schwieger, D. Freude:
Catalytic and multinuclear MAS NMR studies of a thermally treated zeolite ZSM-5.
J. Catal. 237 (2006) 416−425. Request code: kanellopoulos2006
156. D. Prochnow, A.R. Grimmer, D.Freude:
Solid-state NMR studies of O-17−enriched pyrophosphates.
Solid State Nucl. Magn. Reson. 30 (2006) 69−74. Request code: prochnow2006
155. M.V. Luzgin, A.G. Stepanov, S.S. Arzumanov, V.A. Rogov, V.N. Parmon, W. Wang, M. Hunger, D. Freude:
Mechanism Studies of the Conversion of 13C-Labeled n-Butane on Zeolite H-ZSM-5 by
Using 13C Magic Angle Spinning NMR Spectroscopy and GC–MS Analysis.
Chem. Eur. J. 12 (2006) 457–465. Request code: luzgin2006
154. S.S. Arzumanov, S.I. Reshetnikov, A.G. Stepanov, V.N. Parmon, D. Freude:
In Situ 1H and 13C MAS NMR Kinetic Study of the Mechanism
of H/D Exchange for Propane on Zeolite H-ZSM-5.
J. Phys. Chem. B 109 (2005) 19748−19757. Request code: arzumanov2005
153. A. G. Stepanov, S. S. Arzumanov, M. V. Luzgin, H. Ernst, D. Freude, V.N. Parmon:
In situ 1H and 13C MAS NMR study of the mechanism of H/D
exchange for deuterated propane adsorbed on H-ZSM-5.
J. Catal. 235 (2005) 221−228. Request code: stepanov2005b
152. J. Jiao, J. Kanellopoulos, W. Wang, S.S. Ray, H. Foerster, D. Freude, M. Hunger:
Characterization of framework and extra-framework aluminum species in non-hydrated
zeolites Y by 27Al spin-echo, high-speed MAS, and MQMAS NMR spectroscopy at B0 = 9.4 to 17.6 T.
Phys. Chem. Chem. Phys. 7 (2005) 3221−3226. Request code: jiao2005
151. A.G. Stepanov, M.V. Luzgin, S.S. Arzumanov, W.- Wang, M. Hunger, D. Freude :
n-Butane conversion on sulfated zirconia: in situ C-13 MAS NMR monitoring of the kinetics
of the C-13−label scrambling and isomerization.
Catal. Lett. 101 (2005) 181−185. Request code: stepanov2005a
150. T. Selvam, V. R. R. Marthala, R. Herrmann, W. Schwieger, N. Pfander, R. Schlogl, H. Ernst, D. Freude:
Al-rich mesoporous FSM-16 materials: Synthesis, characterization and catalytic properties.
Stud. Surf. Sci. Catal. B 158 (2005) 501−508. Request code: selvam2005
149. T. Uma, H. Y. Tu, D. Freude, D. Schneider, U. Stimming:
Characterization of polyphosphate composites based on intermediate temperature.
J. Mater. Sci. 40 (2005) 2755−2758. Request code: uma2005b
148. T. Uma, H.Y. Tu, S. Warth, D. Schneider, D. Freude, U. Stimming:
Synthesis and characterization of proton conducting poly phosphate composites.
J. Mater. Sci 40 (2005): 2059−2063. Request code: uma2005a
147. T. Uma, H.Y. Tu, D. Freude, D. Schneider, U. Stimming:
Characterization of intermediate temperature polyphosphate composites.
J. Mater. Sci 40 (2005): 227−230. Request code: uma2005
146. A. Pampel, M. Fernandez, D. Freude, J. Kärger:
New options for measuring molecular diffusion in zeolites by MAS PFG NMR.
Chem. Phys. Lett. 407 (2005) 53–57. Request code: pampel2005
145. S. Haufe, D. Prochnow, D. Schneider, O. Geier, D. Freude, U. Stimming:
Polyphosphate composite: conductivity and NMR studies.
Solid State Ionics 176 (2005) 955−963. Request code: haufe2005
144. W. Lutz, C.H. Ruscher, T.H.M. Gesing, M. Stöcker, S. Vasenkov , D. Freude, R. Glaser, C. Berge:
Investigations of the mechanism of dealumination of zeolite Y by steam: Tuned mesopore formation versus the Si/Al ratio.
Stud. Surf. Sci. Catal. 154 (2004) 1411−1417. Request code: lutz2004
143. H. Ernst, D. Freude, J. Kanellopoulos,T. Loeser, D. Prochnow, D. Schneider:
Has O-17 NMR been established as a spectroscopic tool for zeolite characterization?
Stud. Surf. Sci. Catal. 154 (2004) 1173−1179. Request code: ernst2004
142. A.G. Stepanov, S.S. Arzumanov, M. V. Luzkin, H. Ernst, D. Freude:
In situ monitoring of n-butene conversion on H-ferrierite by 1H, 2H and 13C MAS NMR.
Kinetics of a double-bond-shift reaction, hydrogen exchange and the 13C-label scrambling.
J. Catal. 229 (2005) 243−251. Request code: stepanov2005
141. D. Freude, T. Loeser:
17O NMR Studies of Zeolites, in Molecules in interaction with surfaces and interfaces.
Lect. Notes Phys. 634 (2004) 163−180. Request code: freude2004
140. M. Rauscher, T. Selvam, W. Schwieger, D. Freude:
Hydrothermal transformnation of porous glass granules into ZSM-5 granulates.
Microporous Mesoporous Mater. 75 (2004) 195−202. Request code: rauscher2004
139. T. Loeser, D. Freude, G. T. P. Mabande, W. Schwieger:
17O NMR studies of sodalites.
Chem. Phys. Lett. 370 (2003) 32−38. Request code: loeser2003
138. O. Geier, S. Vasenkov,. D. Freude, J. Kärger:
PFG NMR observation of an extremely strong dependence of the ammonia self-diffusivity on its loading in H-ZSM-5.
J. Catal. 213 (2003) 321–323. Request code: geier2003
137. D. Freude, J. Kärger:
NMR Techniques in Handbooks of Porous Solids (Eds. F. Sch th, K.S.W. Sing, J. Weitkamp),
Wiley-VCH, Weinheim, 2002, p. 465−505. Request code: freude2002
136. J. Kärger, D. Freude:
Mass transfer in micro- and mesoporous materials.
Chem. Eng. Technol. 25 (2002) 769−778. Request code: Kärger2002c
135. J. Kärger, D. Freude:
Stofftransport in mikro- und mesopor sen Materialien.
Chemie Ingenieur Technik 73 (2001) 1517−1527. Request code: Kärger2001
134. A.G. Stepanov, M.V. Luzgin, S.S. Arzumanov, H. Ernst, D.Freude:
n-Butene Conversion on H-Ferrierite Studied by 13C MAS NMR.
J. Catal. 211 (2002) 165-172. Request code: stepanov2002a
133. F. Scheffler, W. Schwieger, D. Freude, H. Liu, W. Heyer, F. Janowski:
Transformation of porous glass beads into MFI-containing beads.
Microporous Mesoporous Mater. 55 (2002 )181−191. Request code: scheffler2002
132. H. Liu, H. Ernst, D. Freude, F. Scheffler, W. Schwieger:
In situ 11B MAS NMR study of the synthesis of a boron containing MFI type zeolite.
Microporous Mesoporous Mater. 54 (2002) 319−330. Request code: liu2002
131. D. Freude, T. Loeser, U. Pingel:
17O NMR studies of the structure and basic properties of zeolites.
Stud. Surf. Sci. Catal. 135 (2001) 177. Request code: freude2001a
130. D. Freude, T. Loeser, D. Michel, U. Pingel, D. Prochnow:
17O NMR studies of low silicate zeolites.
Solid State Nucl. Magn. Reson. 20 (2001) 46−60. Request code: freude2001
129. D. Rutenbeck, H. Papp, D. Freude, W. Schwieger:
Investigations on the reaction mechanism of the skeletal isomerization of n-butenes to isobutene.
Reaction mechanism on H-ZSM-5 zeolites.
Appl. Catal. A: General 206 (2001) 57−66. Request code: rutenbeck2001a
128. D. Freude:
Quadrupolar Nuclei in Solid-state Nuclear Magnetic Resonance, in Encyclopedia of Analytical Chemistry,
R.A. Meyers (Ed.), pp. 12188–12224, John Wiley & Sons Ltd, Chichester, 2000. Request code: freude2000r.pdf
127. U. Brenn, H. Ernst, D. Freude, R. Herrmann, R. Jähnig, H.G. Karge, J. Kärger, T. König, B. Mädler, U. Pingel, D. Prochnow, W. Schwieger:
Synthesis and characterization of the layered sodium silicate ilerite.
Microporous Mesoporous Mater. 40 (2000) 43−52.
Request code: brenn2000
126. S. Vasenkov, J. Kärger, D. Freude, R.A. Rakoczy, J. Weitkamp:
Percolation diffusion of guest molecules in NaCaA zeolites: field gradient NMR studies and Monte Carlo simulations.
J. Mol. Catal. A: Chemical 158 (2000) 373−376. Request code: vasenkov2000
125. W. Schwieger, M. Rauscher, R. M nnig, F. Scheffler, D. Freude:
Supported crystallization of MFI- and FER-type molecular sieves on porous glasses.
Stud. Surf. Sci. 129 (2000) 121−130. Request code: schwieger2000
124. N. Nestle, M. Dakkouri, O. Geier, D. Freude, J. Kärger:
Blastfurnace slag cements: A construction material with very unusual nuclear spin relaxation behavior during hardening.
J. Appl. Phys. 88 (2000) 4269-4273. Request code: nestle2000
123. T. Mildner, H. Ernst, D. Freude, J. Kärger, U. Winkler:
Time-resolved 13C MAS NMR investigation of chemical reactions: The MTG process.
Magn. Reson. Chem. 37 (1999) 38−42. Request code: mildner1999
122. H. Ernst, D. Freude; T. Mildner, H Pfeifer:
High temperature 1H MAS NMR studies of the proton mobility in zeolites,
Proc. 12 Int. Zeol. Conf. (Edts.:M.M.J. Treacy, B.K. Marcus, M.E. Bisher, J.B. Higgins)
Mater. Res. Soc., Warrendale, 1999, p. 2955−2962. Request code: ernst1999
121. W.Schwieger, M.Rauscher, F. Scheffler, D. Freude, U. Pingel, F. Jankowski:
Biphasic silicate materials based on porous glasses preparation and properties.
Proc. 12 Int. Zeol. Conf. (Edts.:M.M.J. Treacy, B.K. Marcus, M.E. Bisher, J.B. Higgins)
Mater. Res. Soc.,Warrendale, 1999, p. 1849−1856. Request code: schwieger1999
120. J. Sommer, D. Habermacher, R. Jost, A. Sassi, A.G. Stepanov, M.V. Luzgin, D. Freude, H. Ernst, J. Martens:
Activation of small alkanes on solid acids. An H/D exchange study by liquid and solid-state NMR:
The activation energy and the inhibiting effect of carbon monoxide.
J. Catal. 181 (1999) 265−270. Request code: sommer1999
119. D. Freude:
Solid-state NMR, Basic Theory and Recent Progress for Quadrupole Nuclei with Half-integer Spin.
Buletiin Kimia 13 (1999) 1−30. Request code: freude1998
118. U.-T. Pingel, J.-P. Amoureux, T. Anupold, F. Bauer, H. Ernst, C. Fernandez, D. Freude, A. Samoson:
High field 17O NMR studies of the SiOAl bond in solids.
Chem. Phys. Lett. 294 (1998) 345−350. Request code: pingel1998
117. A. G. Stepanov, H. Ernst, D. Freude:
In situ 1H MAS NMR studies of the H/D exchange of deuterated propane adsorbed on zeolite H-ZSM-5.
Catal. Lett. 54 (1998) 1−4. Request code: stepanov1998
116. T. Mildner, D. Freude:
Proton transfer between Br nsted sites and benzene molecules in zeolites H-Y studied by in situ MAS NMR.
J. Catal. 178 (1998) 309−314. Request code: mildner1998
115. J.-P. Amoureux, F. Bauer, H. Ernst, C. Fernandez, D. Freude, D. Michel, U.-T. Pingel:
17O multiple-quantum and 1H MAS NMR studies of zeolite ZSM-5.
Chem. Phys. Lett. 285 (1998) 10−14. Request code: amoureux1998
114. L. Brabec, M. Jeschke, R. Klik, J. Novakov , L. Kubelkov , D. Freude, V. Bosacek, J. Meusinger:
Various types of Ga in MFI metallosilicates, characterization and catalytic activity.
App. Catal. A 167 (1998) 309−320. Request code: brabec1998
113. J. Kärger, D. Freude:
In situ studies of catalytic reactions in zeolites by means of PFG and MAS NMR techniques.
Stud. Surf. Sci. Catal. 105 (1997) 551−558. Request code: Kärger1997
112. R. Klik, V. Bosacek, L. Kubelkov , D. Freude, D. Michel:
Coordination state of Gallium in MFI structures prepared by postsynthetic modification of boralites.
Zeolites 19 (1997):343−348. Request code: klik1997
111. T. Mildner, H. Ernst, D. Freude, W.F. Hölderich:
Temperature-jump Relaxation MAS NMR Study of the MTBE Reaction in a Boron Pentasil Zeolite.
J. Am. Chem. Soc. 119 (1997) 4258−4262. Request code: mildner1997
110. V. Bosacek, H. Ernst, D. Freude, T. Mildner:
Surface methoxy groups in zeolites studied by multinuclear MAS NMR spectroscopy.
Zeolites 18 (1997) 196−199. Request code: bosacek1997
109. H. Ernst, D. Freude, T. Mildner, I. Wolf:
Laser-supported high-temperature MAS NMR for time-resolved in situ studies of reaction steps in heterogenous catalysis.
Solid State Nucl. Magn. Reson. 6 (1996) 147−156. Request code: ernst1996
108. I. Wolf, D. Freude:
Low-temperature and echo 1H magic-angle spinning NMR studies of dealuminated and weakly rehydrated zeolites H-Y.
Microporous Mater. 5 (1995) 69−75. Request code: wolf1995
107. T. Mildner, H. Ernst, D. Freude:
207Pb NMR detection of spinning induced temperature gradients in MAS rotors.
Solid State Nucl. Magn. Reson. 5 (1995) 269−271. Request code: mildner1995
106. H. Ernst, D. Freude, T. Mildner, I. Wolf:
Laser supported high temperature MAS NMR. A new method for time resolved in situ studies of reaction steps in heterogeneous catalysis.
Stud. Surf. Sci. Catal. 94 (1995) 413−418. Request code: ernst1995
105. H. Ernst, D. Freude, T. Mildner , I. Wolf:
Temperaturgeschaltete 2D MAS NMR. Eine neue Methode f r zeitaufgel ste Untersuchungen katalytischer Reaktionen
an Festk rperoberfl chen.
Z. Phys. Chemie 189 (1995) 221−228. Request code: ernst1995b
104. D. Freude:
Enhanced resolution in the 1H NMR spectra of zeolite H-ZSM-5 by heteronuclear dipolar-dephasing spin-echo MAS.
Chem. Phys. Lett. 235 (1995) 69−75. Request code: freude1995
103. H. Ernst, D. Fenzke, D. Freude, B. Knorr, H. Pfeifer:
Enhanced Sensitivity of Zero-Field NMR Spectroscopy at High Magnetic Fields.
Z. Naturforschung 50a (1995) 388−394. Request code: ernst1995a
102. H. Ernst, D. Freude, T. Mildner:
Temperature Switched MAS NMR. A New Method for Time Resolved in situ Studies of Reaction Steps in Heterogeneous Catalysis.
Chem. Phys. Lett. 229 (1994) 291−296. Request code: ernst1994
101. D. Freude, H. Ernst, T. Mildner, H. Pfeifer, I. Wolf:
NMR Studies Concerning the Acidity and Catalysis in Zeolites.
Stud. Surf. Sci. Catal. 90 (1994) 105−116.Request code: freude1994a
100. D. Freude, H. Ernst, I. Wolf:
Solid-State NMR Studies of Acid Sites in Zeolites.
Solid State Nucl. Magn. Reson. 3 (1994) 271−286. Request code: freude1994
99. H. Ernst, D. Freude, H. Pfeifer, I. Wolf:
Multinuclear Solid-State NMR Studies of Bronsted Sites in Zeolites.
GIT Fachz. Lab. 6 (1994) 708-710. Request code: ernst1994d
98. H. Ernst, D. Freude, T. Mildner, H. Pfeifer:
Temperature Switched in situ 1H and 13C MAS NMR Studies of the Catalytic Conversion of Methanol on Zeolite ZSM-5.
Stud. Surf. Sci. Catal. 84 (1994) 1717−1721. Request code: ernst1994a
97. H. Ernst, D. Freude, H. Pfeifer, I. Wolf:
Multinuclear NMR Studies of Acid Sites in Zeolites.
Stud. Surf. Sci. Catal. 84 (1994) 381−385. Request code: ernst1994c
96. H. Ernst, D. Freude, I. Wolf:
Multinuclear Solid-State NMR Studies of Br nsted Sites in Zeolites.
Chem. Phys. Lett. 212 (1993) 588−596. Request code: ernst1993
95. D. Freude, J. Haase:
Quadrupole Effects in Solid-State NMR.
NMR, Basic Principles and Progress 29 (1993) 1−90. Request code: freude1993
94. M. Hunger, D. Freude, D. Fenzke, H. Pfeifer:
1H Solid-State NMR Studies of the Geometry of Br nsted Acid Sites in Zeolites H-ZSM-5.
Chem. Phys. Lett. 191 (1992) 391−395. Request code: hunger1992
93. W.Schwieger, D. Freude, P. Werner, D. Heidemann:
Direct Synthesis of Novel Intercalated Layer Silicates of the Metal Silicate Type.
Synthesis of Microporous Materials (Edts.: M.L. Ocelli, H.E. Robson)
Van Nostrand Reinhold, N.Y.,1992, p. 229-244. Request code: schwieger1992
92. D. Völtzke, T. Müller, H.-P. Abicht, D. Freude:
Zur Synthese von reinem Fresnoit Ba2TiSi2O8.
Silikattechnik 42 (1991) 313−318. Request code: voltzke1991
91. E. Brunner, D. Freude, M. Hunger, H. Pfeifer, B. Staudte:
Magic-Angle-Spinning NMR and IR Studies on Modified Zeolites.
Stud. Surf. Sci. Catal. 69 (1991) 453−459. Request code: brunner1991a
90. H. Ernst, D. Freude, M. Hunger, H. Pfeifer:
Multinuclear MAS NMR Studies on Coked Zeolites H‑ZSM-5.
Stud. Surf. Sci. Catal. 65 (1991) 397−404. Request code: ernst1991
89. H. Pfeifer, D. Freude, J. Kärger:
Basic Principles and Recent Results of 1H MAS and Pulsed Field Gradient NMR Studies on Zeolites.
Stud. Surf. Sci. Catal. 65 (1991) 89−115. Request code: pfeifer1991
88. P. Batamack, C. Doremieux-Morin, J. Fraissard, D. Freude:
NMR Studies Concerning the Hydroxonium Ion in Zeolites HZSM-5.
J. Chem. Phys. 95 (1991) 3790−3796. Request code: batamack1991
87. M. Hunger, D. Freude, H. Pfeifer:
MAS NMR Studies of Water Molecules Adsorbed on Broensted and Lewis Acid Sites in Zeolites and Amorphous Silica-Aluminas.
J. Chem. Soc., Faraday Trans. 87 (1991) 657−662. Request code: hunger1991
86. E. Brunner, H. Ernst, D. Freude, T. Fröhlich, M. Hunger, H. Pfeifer:
Magic-Angle Spinning NMR Studies of Acid Sites in Zeolite H-ZSM-5.
J. Catal. 127 (1991) 34−41. Request code: brunner1991
85. E. Brunner, D. Freude, B.C. Gerstein, H. Pfeifer:
Residual Linewidths of NMR Spectra of Spin 1/2 Systems Under Magic-Angle Spinning.
J. Magn. Reson. 90 (1990) 90−99. Request code: brunner1990
84. M.C. Barrage, F. Bauer, H. Ernst, J. Fraissard, D. Freude, H. Pfeifer:
Multinuclear NMR and Catalytic Investigations of Deactivation of Zeolite H-ZSM-5.
Catal. Lett. 6 (1990) 201−208. Request code: barrage1990
83. E. Brunner, D. Fenzke, D. Freude, H. Pfeifer:
The Influence of Homonuclear Dipolar Interaction on the Residual Linewidths of MAS NMR Spectra.
Chem. Phys. Lett. 169 (1990) 591−594. Request code: brunner1990a
82. M. Hunger, D. Freude, H. Pfeifer, W.Schwieger:
MAS NMR Studies of Silanol Groups in Zeolites ZSM‑5 Synthesized With an Ionic Template.
Chem. Phys. Lett. 167 (1990) 21−26. Request code: hunger1990
81. I. Hannus, I. Kiricsi, P. Fejes, H. Pfeifer, D. Freude, W. Oehme:
Zeolitok reakci ja ill kony, halog ntartalm reagensekkel, IV. Hidroxilcsoportok trmikus stabilit sa dealumin lt mordenitekben.
Magyar Kemiai Folyoirat 96 (1990) 84−88. Request code: hannus1990
80. K.-H. Schnabel, U. Lohse, Ch. Peuker, D. Freude, O.V. Bragin, G.A. Kutravtseva, A.V. Preobrazhenskij, T.V. Vasina:
The Influence of the Dealumination of the High Silica Zeolite ZVM on the Character of OH Groups and the Catalytic Properties.
Z. Phys. Chemie (Leipzig) 270 (1989) 1−4. Request code: schnabel1989
79.W. Reschetilowski, W.-D. Einicke, M. Jusek, R. Schöllner, D. Freude, M. Hunger, J. Klinowski:
Magic-Angle-Spinning NMR and Adsorption Studies of Dealumination and Realumination of Zeolite ZSM‑5.
Appl. Catal. 56 (1989) L15−L20. Request code: reschetilowski1989
78. M. Hunger, D. Freude, H. Pfeifer, D. Prager, W. Reschetilowski:
Proton MAS NMR Studies of Hydroxyl Groups in Alkaline Earth Cation-Exchanged Zeolite Y.
Chem. Phys. Lett. 163 (1989) 221−224. Request code: hunger1989
77. D. Freude:
High Resolution Solid-State 1H NMR Studies of Zeolites.
Stud. Surf. Sci. Catal. 52 (1989) 169−192. Request code: freude1989
76. J. Klinowski, H. Hamdan, A. Corma, V. Fornes, M. Hunger, D. Freude:
1H MAS NMR and IR Studies of the Acidic Properties of Realuminated Zeolite Y.
Catal. Lett. 3 (1989) 263−272. Request code: klinowski1989
75. W. Schwieger, K.-H. Bergk, D. Freude, M. Hunger, H. Pfeifer:
Synthesis of Pentasil Zeolites With and Without Organic Templates.
ACS Symp. Ser. 398 (1989) 274−290. Request code: schwieger1989.pdf
74. E. Brunner, H. Ernst, D. Freude, T. Fröhlich, M. Hunger, H. Pfeifer:
MAS NMR Studies on Superacid Sites.
Stud. Surf. Sci. Catal. 49 (1989) 623−632. Request code: brunner1989a
73. E. Brunner, H. Ernst, D. Freude, M. Hunger, C.B. Krause, D. Prager,
W. Reschetilowski, W. Schwieger, K.-H. Bergk:
Solid-state NMR and Catalytic Studies of Mildly Hydrothermally Dealuminated H-ZSM-5.
Zeolites 9 (1989) 28228−6. Request code: brunner1989
72. F. Rössner, K.H. Steinberg, D. Freude, M. Hunger, H. Pfeifer:
NMR and IR studies of Zeolites of the Erionite Type.
Stud. Surf. Sci. Catal. 46 (1989) 421−428. Request code: Rössner1989
71. H. Dwelk, D. Freude, R. Herrmann, H. Pfeifer, N. Pruss:
Substitution of Yttrium for Boron in the Structure of YBa2Cu3O7−δd.
phys. stat. sol. (a) 113 (1989) 159−162. Request code: dwelk1989
70. J. Haase, D. Freude, T. Fröhlich, G. Himpel, F. Kerbe, E. Lippmaa,
H. Pfeifer, P. Sarv, H. Sch fer, B. Seiffert:
27Al Magic-angle-spinning NMR Studies of Aluminium Nitride Ceramics.
Chem. Phys. Lett. 156 (1989) 328−332. Request code: haase1989
69. B. Unger, W. Reschetilowski, K.-W. Wendland, D. Freude, P. Kraak, H. Bremer:
Synthetische Boroalumosilikate mit Pentasilstruktur (SABO): Strukturelle, oberfl chenchemische und katalytische Eigenschaften.
Z. anorg. allg. Chemie 566 (1988) 39−48. Request code: unger1988
68. J. Haase, D. Freude, H. Pfeifer, E. Lippmaa, P. Sarv:
Two-pulse Free Induction Decay Quadrupole NMR.
Chem. Phys. Lett. 152 (1988) 254−257. Request code: haase1988
67. D. Freude, J. Klinowski:
Solid-state 1H NMR Studies of the Structure of the Active Site in Zeolite H-ZSM-5.
J. Chem. Soc., Chem. Commun. (1988) 1411−1413. Request code: freude1988
66. D. Freude, J. Klinowski, H. Hamdan:
Solid-state NMR Studies of the Geometry of Br nsted Acid Sites in Zeolitic Catalysts.
Chem. Phys. Lett. 149 (1988) 355−362. Request code: freude1988a
65. M. Hunger, D. Freude, H. Pfeifer:
1H MAS Studies of Acid Sites in ZSM-5 Type Zeolites.
Catal. Today 3 (1988) 507−512. Request code: hunger1988
64. J. Kärger, M. Hunger, D. Freude, H. Pfeifer, J. Caro, M. Bülow, H. Spindler:
NMR Investigation on Molecular Transport in ZSM-5 Type Zeolites Containing Structural Defects.
Catal. Today 3 (1988) 493−499. Request code: Kärger1988
63. V. Bosacek, D. Freude:
Non-framework Al Species in Y Zeolites Investigated by 27Al MAS NMR and by IR Spectroscopy.
Stud. Surf. Sci. Catal. 37 (1988) 231−237. Request code: bosacek1988
62. K.-P. Wendland, W.P. Reschetilowski, B. Unger, B.V. Romanovskij, E.V. Suchova, D. Freude:
Chemical and Catalytic Properties of ZSM-5 Type Boroalumosilicates.
Stud. Surf. Sci. Catal. 37 (1988) 207−213. Request code: wendlandt1988
61. E. Brunner, H. Ernst, D. Freude, M. Hunger, H. Pfeifer:
Characterization of Zeolites by MAS NMR.
Stud. Surf. Sci. Catal. 37 (1988) 155−165. Request code: brunner1988a
60. E. Brunner, D. Freude, M. Hunger, H. Pfeifer, W. Reschetilowski, B. Unger:
MAS NMR and IR Studies on ZSM-5 Type Boroalumosilicates.
Chem. Phys. Lett. 148 (1988) 226−230. Request code: brunner1988
59. B. Unger, W. Reschetilowski, K.-P. Wendland, D. Freude:
Katalytische und 27Al-MAS-NMR-Untersuchungen an thermisch behandelten ZSM-5−Syntheseprodukten.
Z. Chem. 28 (1988) 194195. Request code: unger1988
58. H. Pfeifer, D. Freude, J. Kärger:
Kernmagnetische Resonanzuntersuchungen an Zeolithen.
Z. Phys. Chemie (Leipzig) 269 (1988) 320−330. Request code: pfeifer1988
57. D. Freude, H. Ernst, M. Hunger, H. Pfeifer, E. Jahn:
Magic-Angle-Spinning NMR Studies of Zeolite SAPO-5.
Chem. Phys. Lett. 143 (1988) 477−481. Request code: freude1988b
56. J. Caro, M. Bülow, J. Richter-Mendau, J. Kärger, M. Hunger, D.Freude, L.V.C. Rees:
Nuclear Magnetic Resonance Self-diffusion Studies of Methanol-Water Mixtures in Pentasil-type Zeolites.
J. Chem. Soc., Faraday Trans. 1, 83 (1987) 1843−1849. Request code: caro1987
55. D. Freude, E. Brunner, H. Pfeifer, D. Prager, H.‑G. Jerschkewitz, U. Lohse, G. Oehlmann:
Magic-Angle-Spinning NMR Studies of Dealuminated Zeolites.
Chem. Phys. Lett. 139 (1987) 325−330. Request code: freude1987
54. D. Freude, M. Hunger, H. Pfeifer:
Investigation of Acidic Properties of Zeolites by MAS NMR.
Z. Phys. Chemie (NF) 152 (1987) 171−182. Request code: freude1987b
53. D. Freude, J. Haase, J. Klinowski:
Solid-State NMR Studies of Framework Defects in Thermally Treated Zeolites Ca-A.
Chem. Phys. Lett. 133 (1987) 491−495. Request code: freude1987a
52. H. Ernst, D. Freude, M. Hunger, H. Pfeifer, B. Seiffert:
Untersuchungen der hochaufl senden Protonenresonanz von verschiedenen Alumosilikat-Katalysatoren bei Beladung mit Ammoniak.
Z. Phys. Chemie (Leipzig) 268 (1987) 304−314. Request code: ernst1987
51. M. Hunger, D. Freude, T. Fröhlich, H. Schwieger:
MAS NMR Studies of ZSM-5 Type Zeolites.
Zeolites 7 (1987) 108−110. Request code: hunger1987
50. D. Freude, M. Hunger, H. Pfeifer, W. Schwieger:
1H MAS NMR Studies on the Acidity of Zeolites.
Chem. Phys. Lett. 128 (1986) 62−66. Request code: freude1986
49. D. Freude:
Nuclear Magnetic Relaxation Measurements Concerning the Molecular Mobility of Methane in Zeolite Na-A.
Zeolites 6 (1986) 12−13. Request code: freude1986a
48. J. Kärger, H. Pfeifer, D. Freude, J. Caro, M. Bülow, G. hlmann:
NMR Investigations of Self-diffusion in Pentasils.
Stud. Surf. Sci. Catal. 28 (1986) 633−639. Request code: Kärger1986
47. D. Freude, J. Kärger, H. Pfeifer:
Lattice Defects and Surface Barriers in Thermally Treated Zeolite Ca-A.
Acta Phys. Chem. 31 (1985) 89−98. Request code: freude1985d
46. D. Freude, J. Haase, J. Klinowski, T.A. Carpenter, G. Ronikier:
NMR Line Shifts Caused by the Second-Order Quadrupolar Interaction.
Chem. Phys. Lett., 119 (1985) 365−367. Request code: freude1985a
45. H. Pfeifer, D. Freude, M. Hunger:
NMR Studies on the Acidity of Zeolites and Related Catalysts.
Zeolites 5 (1985) 274−286. Request code: pfeifer1985
44. P. Fejes, D. Hannus, I. Kiricsi, H. Pfeifer, D. Freude, W. Oehme:
Thermal Stability of Hydroxyl Groups in Dealuminated Mordenites,
Zeolites 5 (1985) 45−48. Request code: fejes1985
43. D. Freude:
NMR-Investigation of Proton Donator and Electron Acceptor Properties in Heterogenous Systems.
Adv. Colloid Interface Sci. 23 (1985) 21−43. Request code: freude1985
42. D. Freude, J. Haase, H. Pfeifer, D. Prager, G. Scheler:
Extra Framework Aluminium in Thermally Treated Zeolite CaA.
Chem. Phys. Lett. 114 (1985) 143−146. Request code: freude1985b
41. D. Fenzke, D. Freude, T. Fröhlich, J. Haase:
NMR Intensity Measurements of Half-integer Quadrupole Nuclei.
Chem. Phys. Lett. 111 (1984) 171−175. Request code: fenzke1984
40. M. Alla, D. Freude, E. Lippmaa, D. Prager:
Die chemische Verschiebung kernmagnetischer Resonanz von Thalliumzeolithen.
Z. Phys. Chemie (Leipzig) 265 (1984) 825−830. Request code: alla1984
39. D. Freude, H. Pfeifer, A. Schmidt, B. Staudte:
Charakterisierung acider Zentren im HY-Zeolith durch NMR-Untersuchungen der Wechselwirkung der Hydroxylgruppen mit Pyridin.
Z. Phys. Chemie (Leipzig) 265 (1984) 250−256. Request code: freude1984a
38. V. Bosacek, D. Freude, W. Gr nder, W. Meiler, H. Pfeifer:
Charakterisierung acider Zentren im HY-Zeolth durch NMR-Untersuchungen des adsorbierten Acetonitrils.
Z. Phys. Chemie (Leipzig) 265 (1984) 241−249. Request code: bosacek1984
37. D. Freude, M. Hunger, H. Pfeifer, G. Scheler, J. Hoffmann, W. Schmitz:
Highly Resolved Proton Magnetic Resonance Spectra of Hydroxyl Groups in Hydrogen-Zeolites.
Chem. Phys. Lett. 105 (1984) 427−430. Request code: freude1984
36. M. Hunger, D. Freude, H. Pfeifer, H. Bremer, M. Jank, K.P.Wendlandt:
High-Resolution Proton Magnetic Resonance and Catalytic Studies Concerning Bronsted-Centers of Amorphous Al2O3 Solids.
Chem. Phys. Lett. 100 (1983) 29−33. Request code: hunger1983
35. D. Freude, T. Fröhlich, M. Hunger, H. Pfeifer, G. Scheler:
NMR Studies Concerning the Dehydroxylation of Zeolites HY.
Chem. Phys. Lett. 98 (1983) 263−266. Request code: freude1983
34. D. Freude, T. Fröhlich, H. Pfeifer, G. Scheler:
NMR Studies of Aluminium in Zeolites.
Zeolites 3 (1983) 171−177. Request code: freude1983a
33. D. Freude, M. Hunger, H. Pfeifer:
Study of Br nsted Acidity of Zeolites Using High-Resolution Proton Magnetic Resonance with Magic Angle Spinning.
Chem. Phys. Lett. 91 (1982) 307−310. Request code: freude1982
32. V. Bosacek, D. Freude, T. Fröhlich, H. Pfeifer, H. Schmiedel:
NMR Studies of 27Al in Decationated Y Zeolites.
J. Colloid Interface Sci. 85 (1982) 502−507. Request code: bosacek1982
31. W. Ploss, D. Freude, H. Pfeifer, H. Schmiedel:
Ein statistisches Modell zum Einflu der thermischen Bewegung auf NMR-Festkörperspektren.
Annalen der Physik 39 (1982) 1−9. Request code: ploss1982
30. T. Bernstein, H. Ernst, D. Freude, I. Jünger, J. Sauer, B. Staudte:
NMR-Untersuchungen an Kieselgel-Hydroxylgruppen.
Z. Phys. Chemie (Leipzig) 262 (1981) 1123−1134. Request code: bernstein1981
29. H. Bremer, D. Freude, F. Hoffmann, H. Pfeifer, B. Staudte, F. Vogt:
Untersuchung zur Azdität und katalytischen Spaltaktivität dekationisierter Zeolithe.
Z. anorg. allg. Chemie 481 (1981) 168−174. Request code: bremer1981
28. D. Freude, H. Pfeifer, W. Ploss, B. Staudte:
NMR Studies Concerning Br nsted Acidity of HY Zeolites.
J. Molecular Catalysis 12 (1981) 1−9. Request code: freude1981
27. V.K. Borovkov, D. Freude:
Spektra NMR jader so spinom 1/2 pri nalici dipol-dipolnogo vzaimogejstvija s jadrami, obladajuscimi kvadrupolnym momentom.
Z. Strukt. Chimii 22 (1981) 77−82 (russisch),
NMR Spectra of Nuclei with Spin 1/2 when there is a Dipole-Dipole Interaction with Nuclei Exhibiting a Quadrupole Moment in Polycrystalline Specimens - NMR Spoectra of the Hydroxyl Groups of Mordenite from which the Cations have been Removed.
J. Struct. Chem. 22(1981) 207−211. Request code: borovkov1981
26. D. Freude, H.-J. Behrens:
Investigations of 27Al-NMR Chemical Shiftes in Zeolites of the Faujasite Type.
Crystal Research and Technology 16 (1981) K36−38. Request code: freude1981a
25. D. Freude, H. Pfeifer:
NMR Studies Concerning Bronsted Acidity of Zeolites.
Proc. Fifth Int. Conf. Zeolites (Edt.: L.V.C. Rees)
Heyden, London, 1980, p. 732-739. Request code: freude1980
24. V. Bosacek, V. Patzelova, Z.Tvaruzkova, D. Freude, U. Lohse, W. Schirmer, H. Stach, H. Thamm:
The Properties of Strongly Dealuminated Y-Zeolites.
J. Catal. 61 (1980) 435−442. Request code: bosacek1980
23. A.A. Pribylov, D. Freude, H. Schmiedel:
NMR-Untersuchungen der Adsorption von CFCl3 in Zeolithen.
Z. Phys. Chemie (Leipzig) 260 (1979) 582−586. Request code: pribylov1979
22. W. Ploss, D. Freude, H. Pfeifer:
Untersuchungen zur Deuterierung von Zeolith-Hydroxylgruppen.
Z. Phys. Chemie (Leipzig) 260 (1979) 236−240. Request code: ploss1979
21. W. Oehme, D. Freude, S. Klepel, H. Pfeifer, H. Schmiedel:
Untersuchungen von Hydroxylgruppen hydratisierter NaX- und NaY-Zeolithe mit Hilfe der magnetischen Kernresonanz.
Z. Phys. Chemie (Leipzig) 259 (1978) 1137−1150.
Request code: oehme1978
20. D. Freude, H.-J. Herden, H. Pfeifer, H. Schmiedel, R.Schöllner:
Magnetische Li-Resonanzunteresuchungen zur Anordnung und Beweglichkeit der Lithiumionen in dehydratisierten A-Zeolithen.
Z. Phys. Chemie (Leipzig) 259 (1978) 444−454. Request code: freude1978
19. D. Freude, U. Lohse, D. Michel, H. Pfeifer, H.‑J. Zähr:
Magnetische Kernresonanzuntersuchungen zum Protonenaustausch zwischen Hydroxylgruppen in Zeolithen und adsorbierten Wasser- bzw. Buten-1 Molekülen.
Z. Phys. Chemie (Leipzig) 259 (1978) 225−235. Request code: freude1978a
18. D. Freude, W. Oehme , H. Schmiedel, B. Staudte:
NMR Studies Concerning Bronsted Acidity of Zeolites.
J. Catal. 49 (1977) 123−134. Request code: freude1977
17. D. Freude, A. Gutsze, W. Oehme, H. Schmiedel, A. Wronskowski:
Quantitative Determination of CeOH++ Complexes in CeY Zeolites.
Z. Phys. Chemie (Leipzig) 258 (1977) 1190−1192. Request code: freude1977a
16. D. Freude, U. Lohse, H. Pfeifer, W. Schirmer, H. Schmiedel, H. Stach:
Messungen der magnetischen 205Tl-Resonanz und der Dielektrizit tskonstanten an TlA-Zeolithen.
Z. Phys. Chemie (Leipzig) 255 (1974) 443−452. Request code: freude1974
15. W. Oehme, D. Freude, H. Schmiedel:
NMR-Untersuchungen über die Anzahl und Anordnung von Protonen in Zeolithen.
Z. Phys. Chemie (Leipzig) 255 (1974) 566−580. Request code: oehme1974
14. D. Freude, W. Oehme, H. Schmiedel, B. Staudte:
NMR Investigation of Proton Mobility in Zeolites.
J. Catal. 32 (1974) 137−143. Request code: freude1974
13. D. Freude, A.A. Pribylov, H. Schmiedel:
Magnetic 7Li Resonance in Dehydrated Li A-Zeolite.
phys. stat. sol. (b) 57 (1973) K73−K75. Request code: freude1973
12. D. Freude, H. Schmiedel:
NMR Lineshapes of Magnetic Diluted Systems in Solids.
phys. stat. sol. (b) 54 (1972) 631−636. Request code: freude1972
11. D. Freude, D. Müller:
Zur Genauigkeit der Intensität, des zweiten Momentes und der Linienbreite von Signalen bei der kernmagnetischen Breitlinienresonanz.
Exp. Technik Physik 20 (1972) 379−382. Request code: freude1972c
10. D. Freude, A. Hauser, H. Pankau, H. Schmiedel:
Magnetische Resonanz an 205Tl in X- und Y‑Zeolithen.
Z. Phys. Chemie (Leipzig) 251 (1972) 13−21. Request code: freude1972a
9. D. Freude, D. Müller, H. Schmiedel:
Magnetische Protonenresonanzuntersuchungen an dekationisierten Zeolithen.
Z. Phys. Chemie (Leipzig) 250 (1972) 345−354. Request code: freude1972b
8. D. Fenzke, D. D. Freude, D. Müller, H. Schmiedel:
Hahnsches Echo der magnetischen Resonanz im Festkörper.
phys. stat. sol. (b) 50 (1972) 209−215. Request code: fenzke1972
7. Gründer, W., H. Schmiedel, D. Freude:
Eine neue Methode zur Bestimmung von Korrelationszeiten mit Hilfe von NMR-Impulsverfahren.
Annalen der Physik 27 (1971) 409−416. Request code: gr nder1971
6. Schmiedel, H., D. Freude, W. Gründer:
Measurements of Correlation Times by Means of the Temperature Dependence of Coherent Pulse Averaging Effects in NMR.
Phys. Lett. A 34 (1971) 162−163. Request code: schmiedel1971
5. D. Freude, D. Müller, H. Schmiedel:
Nuclear Magnetic Resonance Studies of Hydroxyl Groups in Decationated Zeolites Y.
J. Colloid Interface Sci. 36 (1971) 320324. Request code: freude1971
4. D. Freude, D. Müller, H. Schmiedel:
On the Line Shape Problem of Hydroxyl Groups on Solid Surfaces.
Surface Sci. 25 (1971) 289−297. Request code: freude1971a.pdf
3. D. Freude:
Untersuchung der kernmagnetischen Relaxationszeiten und der Selbstdiffusionskoeffizienten von am Silikagel adsorbierten Di thyläther und n-Hexan.
Z. Phys. Chemie (Leipzig) 247 (1971) 209−218. Request code: freude1971b
2. D. Freude:
Untersuchung der Selbstdiffusionskoeffizienten und der kernmagnetischen Relaxationszeiten von am Silikagel adsorbierten Di thyläther, Benzol und n-Hexan.
Z. Phys. Chemie (Leipzig) 242 (1969) 57−66. Request code: freude1969
1. D. Freude, H. Pfeifer, H. Winkler:
ber das Temperaturverhalten der kernmagnetischen Relaxationszeiten von Benzol adsorbiert am Silikagel.
Z. Phys. Chemie (Leipzig) 232 (1966) 276−280. Request code: freude1966
