INVESTIGATION OF ²⁷AL-NMR CHEMICAL SHIFTS IN ZEOLITES OF THE FAUJASITE TYPEFREUDE D; BEHRENS HJ.1981; CRYST. RES. TECHNOL.; DDR; DA. 1981; VOL. 16; NO 3; PP. K36-K38; BIBL. 9 REF.Article

Nuclear magnetic relaxation measurements concerning the molecular mobility of methane in zeolite Na-AFREUDE, D.Zeolites. 1986, Vol 6, Num 1, pp 12-13, issn 0144-2449Article

STUDY OF BRONSTED ACIDITY OF ZEOLITES USING HIGH-RESOLUTION PROTON MAGNETIC RESONANCE WITH MAGIC-ANGLE SPINNINGFREUDE D; HUNGER M; PFEIFER H et al.1982; CHEM. PHYS. LETT.; ISSN 0009-2614; NLD; DA. 1982; VOL. 91; NO 4; PP. 307-310; BIBL. 15 REF.Article

NMR-UNTERSUCHUNGEN ZUR ANZAHL UND ANORDUNG VON HYDROXYLGRUPPEN IN ZEOLITHEN = ETUDES NMR SUR LE NOMBRE ET LA POSITION DES GROUPES HYDROXYLES DANS LES ZEOLITESOEHME W; FREUDE D; SCHMIEDEL H et al.1974; Z. PHYS. CHEM., LEIPZIG; DTSCH.; DA. 1974; VOL. 255; NO 3; PP. 566-580; ABS. ANGL.; BIBL. 24 REF.Article

NMR-UNTERSUCHUNGEN DER ADSORPTION VON CFCL₃ IN ZEOLITHEN = ETUDES RMN DE L'ADSORPTION DE CFCL₃ SUR LES ZEOLITESPRIBYLOV AA; FREUDE D; SCHMIEDEL H et al.1979; Z. PHYS. CHEM.; DDR; DA. 1979; VOL. 260; NO 3; PP. 582-586; ABS. ENG; BIBL. 5 REF.Article

MAGNETISCHE PROTONENRESONANZUNTERSUCHUNGEN AN DEKATIONISIERTEN ZEOLITHEN = ETUDES DE RESONANCE MAGNETIQUE PROTONIQUE SUR DES ZEOLITES DECATIONISEESFREUDE D; MULLER D; SCHMIEDEL H et al.1972; Z. PHYS. CHEM., LEIPZIG; DTSCH.; DA. 1972; VOL. 250; NO 5-6; PP. 345-354; BIBL. 17 REF.Serial Issue

Proton transfer between bronsted sites and benzene molecules in zeolites H-Y studied by in situ MAS NMRMILDNER, T; FREUDE, D.Journal of catalysis (Print). 1998, Vol 178, Num 1, pp 309-314, issn 0021-9517Article

MAGNETISCHE KERNRESONANZUTERSUCHUNGEN ZUM PROTONEN-AUSTAUSCH ZWISCHEN HYDROXYLGRUPPEN IN ZEOLITHEN UND ADSORBIERTEN WASSER-BZW. BUTEN-1-MOLEKUELEN. = ETUDES RMN DE L'ECHANGE DE PROTONS ENTRE LES GROUPES OH DES ZEOLITES ET L'EAU ADSORBEE OU LES MOLECULES DE BUTENE-1 ADSORBEESFREUDE D; LOHSE U; PFEIFER H et al.1978; Z. PHYS. CHEM., LEIPZIG; DDR; DA. 1978; VOL. 259; NO 2; PP. 225-235; ABS. ENG; BIBL. 16 REF.Article

N.M.R. STUDIES OF ALUMINIUM IN ZEOLITESFREUDE D; FROHLICH T; PFEIFEIR H et al.1983; ZEOLITES; ISSN 0144-2449; GBR; DA. 1983; VOL. 3; NO 2; PP. 171-177; BIBL. 38 REF.Article

NMR STUDIES CONCERNING THE DEHYDROXYLATION OF ZEOLITES HYFREUDE D; FROEHLICH T; HUNGER M et al.1983; CHEMICAL PHYSICS LETTERS; ISSN 0009-2614; NLD; DA. 1983; VOL. 98; NO 3; PP. 263-266Article

NMR STUDIES CONCERNING BRONSTED ACIDITY OF ZEOLITES.FREUDE D; OEHME W; SCHMIEDEL H et al.1977; J. CATALYS.; U.S.A.; DA. 1977; VOL. 49; NO 2; PP. 123-134; BIBL. 28 REF.Article

NMR-STUDIES CONCERNING BROENSTED ACIDITY OF HY ZEOLITESFREUDE D; PFEIFER H; PLOSS W et al.1981; J. MOL. CATAL.; ISSN 0304-5102; CHE; DA. 1981; VOL. 12; NO 1; PP. 1-9; BIBL. 25 REF.Article

QUANTITATIVE DETERMINATION OF CEOH⁺⁺ COMPLEXES IN CEY ZEOLITES.FREUDE D; GUTSZE A; OEHME W et al.1977; Z. PHYS. CHEM., LEIPZIG; DTSCH.; DA. 1977; VOL. 258; NO 6; PP. 1190-1192; BIBL. 4 REF.Article

Investigations on the reaction mechanism of the skeletal isomerization of n-butenes to isobuten. Part I. Reaction mechanism on H-ZSM-5 zeolitesRUTENBECK, D; PAPP, H; FREUDE, D et al.Applied catalysis. A, General. 2001, Vol 206, Num 1, pp 57-66, issn 0926-860XArticle

The influence of homonuclear dipolar interaction on the residual linewidths of mas NMR spectraBRUNNER, E; FENZKE, D; FREUDE, D et al.Chemical physics letters. 1990, Vol 169, Num 6, pp 591-594, issn 0009-2614, 4 p.Article

Solid-state NMR studies of the geometry of Brønsted acid sites in zeolitic catalystsFREUDE, D; KLINOWSKI, J; HAMDAN, H et al.Chemical physics letters. 1988, Vol 149, Num 4, pp 355-362, issn 0009-2614Article

Extra-framework aluminium in thermally treated zeolite CaAFREUDE, D; HAASE, J; PFEIFER, H et al.Chemical physics letters. 1985, Vol 114, Num 2, pp 143-146, issn 0009-2614Article

Nuclear magnetic resonance studies on the acidity of zeolites and related catalystsPFEIFER, H; FREUDE, D; HUNGER, M et al.Zeolites. 1985, Vol 5, Num 5, pp 274-286, issn 0144-2449Article

Catalytic and multinuclear MAS NMR studies of a thermally treated zeolite ZSM-5KANELLOPOULOS, J; UNGER, A; SCHWIEGER, W et al.Journal of catalysis (Print). 2006, Vol 237, Num 2, pp 416-425, issn 0021-9517, 10 p.Article

MAS NMR studies of silanol groups in zeolites ZSM-5 synthesized with an ionic templateHUNGER, M; FREUDE, D; PFEIFER, H et al.Chemical physics letters. 1990, Vol 167, Num 1-2, pp 21-26, issn 0009-2614Article

UNTERSUCHUNGEN ZUR ACIDITAET UND KATALYTISCHEN SPALTAKTIVITAET DEKATIONISIERTER NAY-ZEOLITHE = ETUDE SUR L'ACIDITE ET L'ACTIVITE CATALYTIQUE DE LITS DE ZEOLITE NAY DECATIONESBREMER H; FREUDE D; HOFMANN F et al.1981; Z. ANORG. ALLG. CHEM.; ISSN 0044-2313; DDR; DA. 1981; VOL. 481; PP. 168-174; ABS. ENG; BIBL. 23 REF.Article

MESSUNGEN DER MAGNETISCHEN ²⁰⁵TL-RESONANZ UND DER DIELEKTRIZITAETSKONTANTEN AN TLA-ZEOLITHEN. = MESURES DE LA RESONANCE MAGNETIQUE DE ²⁰⁵TL ET DES CONSTANTES DIELECTRIQUES POUR DES ZEOLITHES-ATLFREUDE D; LOHSE U; PFEIFER H et al.1974; Z. PHYS. CHEM., LEIPZIG; DTSCH.; DA. 1974; VOL. 255; NO 3; PP. 443-452; ABS. ANGL.; BIBL. 7 REF.Article

Hydrothermal transformation of porous glass granules into ZSM-5 granulesRAUSCHER, M; SELVAM, T; SCHWIEGER, W et al.Microporous and mesoporous materials. 2004, Vol 75, Num 3, pp 195-202, issn 1387-1811, 8 p.Article

¹H MAS NMR studies on the activity of zeolitesFREUDE, D; HUNGER, M; PFEIFER, H et al.Chemical physics letters. 1986, Vol 128, Num 1, pp 62-66, issn 0009-2614Article

NMR intensity measurements of half-integer quadrupole nucleiFENZKE, D; FREUDE, D; FRÖLICH, T et al.Chemical physics letters. 1984, Vol 111, Num 1-2, pp 171-175, issn 0009-2614Article