Fraction of Pt surface covered with coke following hydrogenolysis of hexane

Journal Article · Fri May 01 00:00:00 EDT 1992 · AIChE Journal (American Institute of Chemical Engineers); (United States)

DOI:https://doi.org/10.1002/aic.690380514· OSTI ID:7191911

Rivera-Latas, F J; Betta, R A.D.; Boudart, M ^[1]

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1. Dept. of Chemical Engineering, Stanford, CA (United States)

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.

• OSTI ID: 7191911
• Journal Information: AIChE Journal (American Institute of Chemical Engineers); (United States), Vol. 38:5; ISSN 0001-1541
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
08 HYDROGEN
CARBON MONOXIDE
CHEMISORPTION
INFRARED SPECTRA
ETHYLENE
HYDROGENATION
PLATINUM
CATALYTIC EFFECTS
ALUMINIUM OXIDES
CARBONACEOUS MATERIALS
CATALYST SUPPORTS
COKE
COKING
HEXANE
ALKANES
ALKENES
ALUMINIUM COMPOUNDS
CARBON COMPOUNDS
CARBON OXIDES
CARBONIZATION
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
HYDROCARBONS
MATERIALS
METALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
SEPARATION PROCESSES
SORPTION
SPECTRA
TRANSITION ELEMENTS
010409* - Coal
Lignite
& Peat- Pyrolysis & Carbonization- (1987-)
010405 - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
080800 - Hydrogen- Properties & Composition
080201 - Hydrogen- Chemisorption Storage