ISSN:
1572-879X
Keywords:
partial oxidation of methane (POM)
;
synthesis gas
;
bimetallic Pt–Co catalysts
;
coking
;
ensemble effect
;
cobalt surface phase (CSP)
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The partial oxidation of methane to synthesis gas was studied at atmospheric pressure and in the temperature range of 550–800°C over α-Al2O3-supported bimetallic Pt–Co, and monometallic Pt and Co catalysts, respectively. Both methane conversion and CO selectivity over a bimetallic Pt0.5Co1 catalyst were higher than those over monometallic Pt0.5 and Co1 catalysts. Furthermore, the addition of platinum in Pt–Co bimetallic catalysts effectively improved their resistance to carbon deposition with no coking occurring on Pt0.5Co1 during 80 h reaction. The FTIR study of CO adsorption observed only linearly bonded CO on bimetallic Pt–Co catalysts. TPR and XPS showed enhanced formation of a cobalt surface phase (CSP) in bimetallic Pt–Co catalysts. The origins of the good coking resistivity of bimetallic Pt–Co catalysts were discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1019001428159
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