Fraction of Pt surface covered with coke following hydrogenolysis of hexane

Autor:	Michel Boudart, F. J. Rivera-Latas, R. A. Dalla Betta
Rok vydání:	1992
Předmět:	chemistry.chemical_classification Environmental Engineering Carbonization General Chemical Engineering Inorganic chemistry chemistry.chemical_element Coke Catalysis chemistry.chemical_compound chemistry Chemisorption Hydrogenolysis Compounds of carbon Platinum Biotechnology Carbon monoxide
Zdroj:	AIChE Journal. 38:771-780
ISSN:	1547-5905 0001-1541
DOI:	10.1002/aic.690380514
Popis:	This paper reports that following hydrogenolysis of n-hexane on an alumina-supported platinum catalyst, the surface of the metal is covered partially with carbonaceous residues or coke. The fraction of surface platinum not covered with coke has been found to be about one half by four independent techniqu3s: titration of preadsorbed oxygen by dihydrogen, chemisorption of carbon monoxide, infrared spectroscopy of chemisorbed carbon monoxide, and hydrogenation rate of ethylene. The first of these techniques suggests itself as the simplest one for further studies of deactivation by coking of platinum catalysts.
Databáze:	OpenAIRE
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