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Titolo:
CORRELATION BETWEEN METAL OXIDATION-STATE AND CATALYTIC ACTIVITY - HYDROGENATION OF CROTONALDEHYDE OVER RH CATALYSTS
Autore:
FERREIRAAPARICIO P; BACHILLERBAEZA B; RODRIGUEZRAMOS I; GUERRERORUIZ A; FERNANDEZGARCIA M;
Indirizzi:
CSIC,INST CATALISIS & PETR QUIM,CAMPUS CANTOBLANCO MADRID 28040 SPAIN UNED,DEPT QUIM INORGAN MADRID 28040 SPAIN
Titolo Testata:
Catalysis letters
fascicolo: 3-4, volume: 49, anno: 1997,
pagine: 163 - 167
SICI:
1011-372X(1997)49:3-4<163:CBMOAC>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
RH/AL2O3; CHEMISORPTION; PD;
Keywords:
RHODIUM; RHODIUM-ALUMINA; ACTIVE PHASE-SUPPORT INTERACTION; HYDROGENATION OF CROTONALDEHYDE; TEMPERATURE-PROGRAMMED REDUCTION; XANES;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
22
Recensione:
Indirizzi per estratti:
Citazione:
P. Ferreiraaparicio et al., "CORRELATION BETWEEN METAL OXIDATION-STATE AND CATALYTIC ACTIVITY - HYDROGENATION OF CROTONALDEHYDE OVER RH CATALYSTS", Catalysis letters, 49(3-4), 1997, pp. 163-167

Abstract

The effects of the rhodium (oxidation) state on the activity and selectivity for the crotonaldehyde hydrogenation reaction over Rh/Al2O3 and Rh/SiO2 catalysts were examined using the techniques of temperature-programmed reduction, hydrogen chemisorption and X-ray absorption near-edge structure (XANES). In the alumina-supported system, the active phase-support interaction is shown to affect the chemical behavior of rhodium under the influence of a reductive atmosphere by stabilizing Rh3+ species. This behavior is not observed (as expected) for Rh/SiO2 catalysts. The structural and electronic bases of the active phase-support interaction and the effect of the latter phenomenon on the hydrogenation of crotonaldehyde are discussed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/07/20 alle ore 05:30:30