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Titolo:
METAL PALLADIUM SUPPORTED ON AMPHIPHILIC MICROPOROUS SYNTHETIC ORGANIC SUPPORTS - PART II - CATALYTIC INVESTIGATIONS
Autore:
KRALIK M; ZECCA M; BIANCHIN P; DARCHIVIO AA; GALANTINI L; CORAIN B;
Indirizzi:
SLOVAK TECH UNIV,DEPT ORGAN TECHNOL,RADLINSKEHO SK-81237 BRATISLAVA SLOVAKIA UNIV PADUA,DIPARTIMENTO CHIM INORGAN METALLORGAN & ANALI I-35131 PADUA ITALY UNIV AQUILA,DIPARTIMENTO CHIM I-67010 LAQUILA ITALY CNR,CTR STABIL & REATTIV COMPOSTI COORDINAZ I-35131 PADUA ITALY
Titolo Testata:
Journal of molecular catalysis. A, Chemical
fascicolo: 1-2, volume: 130, anno: 1998,
pagine: 85 - 93
SICI:
1381-1169(1998)130:1-2<85:MPSOAM>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
SIZE EXCLUSION CHROMATOGRAPHY; POLYMER SUPPORTS; ACCESSIBILITY; RESINS;
Keywords:
POLY-(STYRENE-2-METHACRYLOXYETHYLSULFONIC ACID METHYLENEBISACRYLAMIDE) PALLADIUM; CYCLOHEXENE HYDROGENATION; DIFFUSIVE VS. KINETIC REGIMES; ESR; STATIC GRADIENT SPIN ECHO NMR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
22
Recensione:
Indirizzi per estratti:
Citazione:
M. Kralik et al., "METAL PALLADIUM SUPPORTED ON AMPHIPHILIC MICROPOROUS SYNTHETIC ORGANIC SUPPORTS - PART II - CATALYTIC INVESTIGATIONS", Journal of molecular catalysis. A, Chemical, 130(1-2), 1998, pp. 85-93

Abstract

Two sets of resin-supported Pd(0) catalysts were compared in the hydrogenation of cyclohexene in methanol, under ambient conditions. Two lightly crosslinked poly-{styrene/2-methacryloxyethylsulfonic acid/methylenebisacrylamide} with different degrees of crosslinking (1 and 3 mol%), have been used as catalyst supports. Two catalysts with different palladium loadings (0.22 and 2.2 wt%) have been prepared from each support. When the size of the particles was relatively small, the catalysts with 2.2% and 0.22% Pd were almost equally active with respect to the amount of palladium in the reaction mixture. In contrast, when larger catalyst particles were used, catalysts with 2.2% metal produced conversion profiles typical of diffusion-controlled regimes (productivity decreased with increasing crosslinking). These catalysts were characterised by combined ESR and static gradient spin echo NMR spectrometries, which have provided information about molecular motion inside the polymer networks. (C) 1998 Elsevier Science B.V.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/09/20 alle ore 05:07:51