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 Brønsted 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. pdf

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. pdf

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 Brønsted Acid Sites?
ChemCatChem 12 (2020) 478–487. pdf

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. pdf

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 Brønsted Acid Sites,
J. Catal. 378 (2019) 341–352. pdf

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. pdf

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. pdf

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. pdf

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. pdf

200. J. Kärger, D. Freude, J. Haase,
Diffusion in Nanoporous Materials: Novel Insights by Combining MAS and PFG NMR,
Processes 6 (2018) 147. pdf

199. A.A. Gabrienko, I.G. Danilova, S.S. Arzumanov, L.V. Pirutko, D. Freude, A.G. Stepanov,
Direct Measurement of Zeolite Brønsted 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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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) 4993-5000. pdf

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. pdf

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. pdf

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 Brønsted Acid Sites.
J. Phys. Chem. C 118 (2014) 14427-14432. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. 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. pdf

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. pdf

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 Brønsted acid sites of Zn- and Ga-modified zeolite BEA.
Phys. Chem. Chem. Phys. 12 (2010) 5149–5155. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

162. J. Kanellopoulos, D. Freude, A. Kentgens:
A practical comparison of MQMAS techniques.
Solid State Nucl. Magn. Reson. 32 (2007) 99−108. pdf

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. pdf

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. pdf

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. 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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

139. T. Loeser, D. Freude, G. T. P. Mabande, W. Schwieger:
17O NMR studies of sodalites.
Chem. Phys. Lett. 370 (2003) 32−38. pdf

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. pdf

137. D. Freude, J. Kärger:
NMR Techniques in Handbooks of Porous Solids (Eds. F. Schüth, K.S.W. Sing, J. Weitkamp),
Wiley-VCH, Weinheim, 2002, p. 465−505. pdf

136. J. Kärger, D. Freude:
Mass transfer in micro- and mesoporous materials.
Chem. Eng. Technol. 25 (2002) 769−778. pdf

135. J. Kärger, D. Freude:
Stofftransport in mikro- und mesoporösen Materialien.
Chemie Ingenieur Technik 73 (2001) 1517−1527. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf, revised 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. pdf

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. pdf

125. W. Schwieger, M. Rauscher, R. Mönnig, F. Scheffler, D. Freude:
Supported crystallization of MFI- and FER-type molecular sieves on porous glasses.
Stud. Surf. Sci. 129 (2000) 121−130. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

119. D. Freude:
Solid-state NMR, Basic Theory and Recent Progress for Quadrupole Nuclei with Half-integer Spin.
Buletiin Kimia 13 (1999) 1−30. pdf

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. pdf

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. pdf

116. T. Mildner, D. Freude:
Proton transfer between Brønsted sites and benzene molecules in zeolites H-Y studied by in situ MAS NMR.
J. Catal. 178 (1998) 309−314. pdf

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. pdf

114. L. Brabec, M. Jeschke, R. Klik, J. Nováková, L. Kubelková, D. Freude, V. Bosácek, J. Meusinger:
Various types of Ga in MFI metallosilicates, characterization and catalytic activity.
App. Catal. A 167 (1998) 309−320. pdf

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. pdf

112. R. Klik, V. Bosácek, L. Kubelková, D. Freude, D. Michel:
Coordination state of Gallium in MFI structures prepared by postsynthetic modification of boralites.
Zeolites 19 (1997):343−348. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

105. H. Ernst, D. Freude, T. Mildner , I. Wolf:
Temperaturgeschaltete 2D MAS NMR. Eine neue Methode für zeitaufgelöste Untersuchungen katalytischer Reaktionen
an Festkörperoberflächen.
Z. Phys. Chemie 189 (1995) 221−228. pdf

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. pdf

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. pdf

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. pdf

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.pdf

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. pdf

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. pdf

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. pdf

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. pdf

96. H. Ernst, D. Freude, I. Wolf:
Multinuclear Solid-State NMR Studies of Brönsted Sites in Zeolites.
Chem. Phys. Lett. 212 (1993) 588−596. pdf

95. D. Freude, J. Haase:
Quadrupole Effects in Solid-State NMR.
NMR, Basic Principles and Progress 29 (1993) 1−90. pdf

94. M. Hunger, D. Freude, D. Fenzke, H. Pfeifer:
1H Solid-State NMR Studies of the Geometry of Brönsted Acid Sites in Zeolites H-ZSM-5.
Chem. Phys. Lett. 191 (1992) 391−395. pdf

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. pdf

92. D. Völtzke, T. Müller, H.-P. Abicht, D. Freude:
Zur Synthese von reinem Fresnoit Ba2TiSi2O8.
Silikattechnik 42 (1991) 313−318. pdf

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. pdf

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. pdf

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. pdf

88. P. Batamack, C. Dorémieux-Morin, J. Fraissard, D. Freude:
NMR Studies Concerning the Hydroxonium Ion in Zeolites HZSM-5.
J. Chem. Phys. 95 (1991) 3790−3796. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

81. I. Hannus, I. Kiricsi, P. Fejes, H. Pfeifer, D. Freude, W. Oehme:
Zeolitok reakciója illékony, halogéntartalmú reagensekkel, IV. Hidroxilcsoportok trmikus stabilitása dealuminált mordenitekben.
Magyar Kémiai Folyóirat 96 (1990) 84−88. pdf

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. pdf

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. pdf

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. pdf

77. D. Freude:
High Resolution Solid-State 1H NMR Studies of Zeolites.
Stud. Surf. Sci. Catal. 52 (1989) 169−192. pdf

76. J. Klinowski, H. Hamdan, A. Corma, V. Fornés, M. Hunger, D. Freude:
1H MAS NMR and IR Studies of the Acidic Properties of Realuminated Zeolite Y.
Catal. Lett. 3 (1989) 263−272. pdf

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. 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. pdf

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. pdf

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. pdf

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. pdf

70. J. Haase, D. Freude, T. Fröhlich, G. Himpel, F. Kerbe, E. Lippmaa, H. Pfeifer, P. Sarv, H. Schäfer, B. Seiffert:
27Al Magic-angle-spinning NMR Studies of Aluminium Nitride Ceramics.
Chem. Phys. Lett. 156 (1989) 328−332. pdf

69. B. Unger,  W. Reschetilowski, K.-W. Wendland, D. Freude, P. Kraak, H. Bremer:
Synthetische Boroalumosilikate mit Pentasilstruktur (SABO): Strukturelle, oberflächenchemische und katalytische Eigenschaften.
Z. anorg. allg. Chemie 566 (1988) 39−48. pdf

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. pdf

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. pdf

66. D. Freude, J. Klinowski, H. Hamdan:
Solid-state NMR Studies of the Geometry of Brønsted Acid Sites in Zeolitic Catalysts.
Chem. Phys. Lett. 149 (1988) 355−362. pdf

65. M. Hunger, D. Freude, H. Pfeifer:
1H MAS Studies of Acid Sites in ZSM-5 Type Zeolites.
Catal. Today 3 (1988) 507−512. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

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. pdf

58. H. Pfeifer, D. Freude, J. Kärger:
Kernmagnetische Resonanzuntersuchungen an Zeolithen.
Z. Phys. Chemie (Leipzig) 269 (1988) 320−330. pdf

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. pdf

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. pdf

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. pdf

54. D. Freude, M. Hunger, H. Pfeifer:
Investigation of Acidic Properties of Zeolites by MAS NMR.
Z. Phys. Chemie (NF) 152 (1987) 171−182. pdf

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. pdf

52. H. Ernst, D. Freude, M. Hunger, H. Pfeifer, B. Seiffert:
Untersuchungen der hochauflösenden Protonenresonanz von verschiedenen Alumosilikat-Katalysatoren bei Beladung mit Ammoniak.
Z. Phys. Chemie (Leipzig) 268 (1987) 304−314. pdf

51. M. Hunger, D. Freude, T. Fröhlich, H. Schwieger:
MAS NMR Studies of ZSM-5 Type Zeolites.
Zeolites 7 (1987) 108−110. pdf

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. pdf

49. D. Freude:
Nuclear Magnetic Relaxation Measurements Concerning the Molecular Mobility of Methane in Zeolite Na-A.
Zeolites 6 (1986) 12−13. pdf

48. J. Kärger, H. Pfeifer, D. Freude, J. Caro, M. Bülow, G. Öhlmann:
NMR Investigations of Self-diffusion in Pentasils.
Stud. Surf. Sci. Catal. 28 (1986) 633−639. pdf

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. pdf

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. pdf

45. H. Pfeifer, D. Freude, M. Hunger:
NMR Studies on the Acidity of Zeolites and Related Catalysts.
Zeolites 5 (1985) 274−286. pdf

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. pdf

43. D. Freude:
NMR-Investigation of Proton Donator and Electron Acceptor Properties in Heterogenous Systems.
Adv. Colloid Interface Sci. 23 (1985) 21−43. pdf

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. pdf

41. D. Fenzke, D. Freude, T. Fröhlich, J. Haase:
NMR Intensity Measurements of Half-integer Quadrupole Nuclei.
Chem. Phys. Lett. 111 (1984) 171−175. pdf

40. M. Alla, D. Freude, E. Lippmaa, D. Prager:
Die chemische Verschiebung kernmagnetischer Resonanz von Thalliumzeolithen.
Z. Phys. Chemie (Leipzig) 265 (1984) 825−830. pdf

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. pdf

38. V. Bosacek, D. Freude, W. Gründer, W. Meiler, H. Pfeifer:
Charakterisierung acider Zentren im HY-Zeolth durch NMR-Untersuchungen des adsorbierten Acetonitrils.
Z. Phys. Chemie (Leipzig) 265 (1984) 241−249. pdf

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. pdf

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. pdf

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. pdf

34. D. Freude, T. Fröhlich, H. Pfeifer, G. Scheler:
NMR Studies of Aluminium in Zeolites.
Zeolites 3 (1983) 171−177. pdf

33. D. Freude, M. Hunger, H. Pfeifer:
Study of Brønsted Acidity of Zeolites Using High-Resolution Proton Magnetic Resonance with Magic Angle Spinning.
Chem. Phys. Lett. 91 (1982) 307−310. pdf

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. pdf

31. W. Ploß, D. Freude, H. Pfeifer, H. Schmiedel:
Ein statistisches Modell zum Einfluß der thermischen Bewegung auf NMR-Festkörperspektren.
Annalen der Physik 39 (1982) 1−9. pdf

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. pdf

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. pdf

28. D. Freude, H. Pfeifer, W. Ploß, B. Staudte:
NMR Studies Concerning Brønsted Acidity of HY Zeolites.
J. Molecular Catalysis 12 (1981) 1−9. pdf

27. V.K. Borovkov, D. Freude:
Spektra NMR jader so spinom ½ 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 spectra of the hydroxyl groups of mordenite from which cations habe been removed.
J. Struct. Chem. 22(1981) 207−211. pdf

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. pdf

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. pdf

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. pdf

23. A.A. Pribylov, D. Freude, H. Schmiedel:
NMR-Untersuchungen der Adsorption von CFCl3 in Zeolithen.
Z. Phys. Chemie (Leipzig) 260 (1979) 582−586. pdf

22. W. Ploß, D. Freude, H. Pfeifer:
Untersuchungen zur Deuterierung von Zeolith-Hydroxylgruppen.
Z. Phys. Chemie (Leipzig) 260 (1979) 236−240. pdf

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. pdf

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. pdf

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. pdf

18. D. Freude, W. Oehme , H. Schmiedel, B. Staudte:
NMR Studies Concerning Bronsted Acidity of Zeolites.
J. Catal. 49 (1977) 123−134. pdf

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. pdf

16. D. Freude, U. Lohse, H. Pfeifer, W. Schirmer, H. Schmiedel, H. Stach:
Messungen der magnetischen 205Tl-Resonanz und der Dielektrizitätskonstanten an TlA-Zeolithen.
Z. Phys. Chemie (Leipzig) 255 (1974) 443−452. pdf

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. pdf

14. D. Freude, W. Oehme, H. Schmiedel, B. Staudte:
NMR Investigation of Proton Mobility in Zeolites.
J. Catal. 32 (1974) 137−143. pdf

13. D. Freude, A.A. Pribylov, H. Schmiedel:
Magnetic 7Li Resonance in Dehydrated Li A-Zeolite.
phys. stat. sol. (b) 57 (1973) K73−K75. pdf

12. D. Freude, H. Schmiedel:
NMR Lineshapes of Magnetic Diluted Systems in Solids.
phys. stat. sol. (b) 54 (1972) 631−636. pdf

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. pdf

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. pdf

9.  D. Freude, D. Müller, H. Schmiedel:
Magnetische Protonenresonanzuntersuchungen an dekationisierten Zeolithen.
Z. Phys. Chemie (Leipzig) 250 (1972) 345−354. pdf

8.  D. Fenzke, D. D. Freude Müller, H. Schmiedel:
Hahnsches Echo der magnetischen Resonanz im Festkörper.
phys. stat. sol. (b) 50 (1972) 209−215. pdf

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. pdf

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. pdf

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. pdf

4.  D. Freude, D. Müller, H. Schmiedel:
On the Line Shape Problem of Hydroxyl Groups on Solid Surfaces.
Surface Sci. 25 (1971) 289−297. pdf

3.  D. Freude:
Untersuchung der kernmagnetischen Relaxationszeiten und der Selbstdiffusionskoeffizienten von am Silikagel adsorbierten Diäthyläther und n-Hexan.
Z. Phys. Chemie (Leipzig) 247 (1971) 209−218. pdf

2.  D. Freude:
Untersuchung der Selbstdiffusionskoeffizienten und der kernmagnetischen Relaxationszeiten von am Silikagel adsorbierten Diäthyläther, Benzol und n-Hexan.
Z. Phys. Chemie (Leipzig) 242 (1969) 57−66. pdf

1.  D. Freude, H. Pfeifer, H. Winkler:
Über das Temperaturverhalten der kernmagnetischen Relaxationszeiten von Benzol adsorbiert am Silikagel.
Z. Phys. Chemie (Leipzig) 232 (1966) 276−280. pdf