Catalytic activity and XPS surface determination of tungsten carbide for hydrocarbon reforming. Influence of the oxygen View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1995-03

AUTHORS

A. Muller, V. Keller, R. Ducros, G. Maire

ABSTRACT

The influence of oxygen on the catalytic properties of tungsten carbide has been studied for the reforming reaction of 2-methylpentane in a great excess of hydrogen. The oxygen surface concentration has been measured by the ratio of the signal area of the O1s and the W4f levels as determined by X-ray photoelectron spectroscopy. Two kinds of processes are observed: cracking and isomerization reactions. The introduction of oxygen at T=350°C leads to a deep decrease of the cracking reaction kinetics; about two orders of magnitude. The tungsten carbide, strongly selective for cracking reactions in absence of oxygen, becomes very selective for isomer production in the presence of oxygen. More... »

PAGES

65-74

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf00807005

DOI

http://dx.doi.org/10.1007/bf00807005

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1004967822


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