Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Characterization of Sn-Pt/SiO2 catalysts used in selective hydrogenation of crotonaldehyde by Mossbauer spectroscopy
Autore:
Margitfalvi, JL; Vanko, G; Borbath, I; Tompos, A; Vertes, A;
Indirizzi:
Hungarian Acad Sci, Chem Res Ctr, Inst Chem, H-1025 Budapest, Hungary Hungarian Acad Sci Budapest Hungary H-1025 hem, H-1025 Budapest, Hungary Lorand Eotvos Univ, Hungarian Acad Sci, Res Grp Nucl Methos Struct Chem, H-1518 Budapest, Hungary Lorand Eotvos Univ Budapest Hungary H-1518 hem, H-1518 Budapest, Hungary
Titolo Testata:
JOURNAL OF CATALYSIS
fascicolo: 2, volume: 190, anno: 2000,
pagine: 474 - 477
SICI:
0021-9517(20000310)190:2<474:COSCUI>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
TIN REFORMING CATALYSTS; ALPHA,BETA-UNSATURATED ALDEHYDES;
Keywords:
Mossbauer spectroscopy; Sn-Pt/SiO2 catalysts; controlled surface reactions; selective hydrogenation of crotonaldehyde; reaction induced selectivity improvement;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Margitfalvi, JL Hungarian Acad Sci, Chem Res Ctr, Inst Chem, Pusztaszeri Ut 59-67, H-1025 Budapest, Hungary Hungarian Acad Sci Pusztaszeri Ut 59-67 Budapest Hungary H-1025
Citazione:
J.L. Margitfalvi et al., "Characterization of Sn-Pt/SiO2 catalysts used in selective hydrogenation of crotonaldehyde by Mossbauer spectroscopy", J CATALYSIS, 190(2), 2000, pp. 474-477

Abstract

Upon treatment of Sn-Pt/SiO2 catalysts with crotonaldehyde (CA) at 80 degrees C formation of Sn4+ species was evidenced by Mossbauer spectroscopy. These results have confirmed the earlier suggestion that the "reaction induced selectivity improvement" observed in the hydrogenation of CA to crotylalcohol over Sn-Pt/SiO2 catalysts is related to the formation and stabilization of ionic forms of tin in the atomic closeness to the platinum. It is suggested that in our Sn-Pt/SiO2 catalysts the formed Sn4+ species are responsible for the activation of the carbonyl group, while further hydrogenation of crotylalcohol to n-butanol is prevented by the presence of a tin enrichedSn-Pt alloy phase on which the readsorption of crotylalcohol is strongly hindered. (C) 2000 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/07/20 alle ore 05:23:07