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Titolo:
Characterization and reactivity of alpha-Al2O3-supported Pt-Co bimetallic catalysts
Autore:
Tang, S; Lin, J; Tan, KL;
Indirizzi:
Natl Univ Singapore, Dept Phys, Surface Sci Lab, Singapore 119260, Singapore Natl Univ Singapore Singapore Singapore 119260 ngapore 119260, Singapore
Titolo Testata:
SURFACE AND INTERFACE ANALYSIS
fascicolo: 1, volume: 28, anno: 1999,
pagine: 155 - 158
SICI:
0142-2421(199908)28:1<155:CAROAP>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
NICKEL-CATALYSTS; METHANE;
Keywords:
catalyst; Al2O3; Pt; Co; XRD; XPS; FTIR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
10
Recensione:
Indirizzi per estratti:
Indirizzo: Lin, J Natl Univ Singapore, Dept Phys, Surface Sci Lab, 10 Kent Ridge Crescent, Singapore 119260, Singapore Natl Univ Singapore 10 Kent Ridge Crescent Singapore Singapore 119260
Citazione:
S. Tang et al., "Characterization and reactivity of alpha-Al2O3-supported Pt-Co bimetallic catalysts", SURF INT AN, 28(1), 1999, pp. 155-158

Abstract

Bimetallic Pt-Co and monometallic Pt and Co catalysts in as-prepared and reduced states were characterized by X-ray diffraction, temperature-programmed reduction, XPS and Farier transform infrared spectroscopy (FTIR), Temperature-programmed reduction and XPS results showed that the addition of platinum lowered the reduction temperature of cobalt oxides and simultaneously increased the amount of cobalt surface phase. The metallic Pt and Co in bimetallic Pt-Co catalysts was found to be highly dispersed in supports. In situ FTIR study of CO adsorption on catalysts confirmed that there was eitherstrong interaction between metallic Pt and Co, or a Pt-Co bimetallic interphase was formed. The CO2 reforming of methane to synthesis gas was also investigated. Both Pt and Co in Pt-Co bimetallic catalysts exerted catalytic activity on CO2 reforming of methane. The coking was effectively inhibited over Pt-Co bimetallic catalysts, which was attributed to the formation of aPt-Co bimetallic interphase and the increase of cobalt surface phase. Copyright (C) 1999 John Whey & Sons, Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/03/20 alle ore 14:17:35