1,3-Butadiene hydrogenation on single crystals of platinum. II. Sulfur poisoning of Pt(110)
The sulfur deactivation of Pt(110) for the 1,3-butadiene hydrogenation and H/sub 2/-D/sub 2/ equilibration reactions at 323-423 K and approx. 400 Torr pressure were investigated. It was observed that each sulfur atom poisons one dissociation site for hydrogen without changing the mechanisms of the reactions occurring on the sites remaining free of sulfur. An isotherm of sulfur adsorption was obtained at 373 K during the hydrogenation reaction. This curve indicates that the butadiene molecules adsorbed under the steady-state conditions of hydrogenation significantly decrease the binding energy of sulfur on platinum (15-20%). As a general conclusion of this study, it appears that the deactivation behavior of sulfur for a catalytic reaction involving unsaturated hydrocarbon depends on the adsorption strength of the hydrocarbon and on its concentration on the surface.
- Research Organization:
- Universite Pierre et Marie Curie, Paris (France)
- OSTI ID:
- 5327752
- Journal Information:
- J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 107:2; ISSN JCTLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020400* -- Petroleum-- Processing
ADSORPTION
ADSORPTION ISOTHERMS
BUTADIENE
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DEACTIVATION
DEUTERIUM
DIENES
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROCARBONS
HYDROGEN
HYDROGEN ISOTOPES
HYDROGENATION
ISOTHERMS
ISOTOPES
ISOTOPIC EXCHANGE
KINETICS
LIGHT NUCLEI
LOW PRESSURE
MEDIUM TEMPERATURE
METALS
NONMETALS
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
PETROLEUM
PLATINUM
PLATINUM METALS
POISONING
POLYENES
PROCESSING
REACTION KINETICS
REFINING
SORPTION
STABLE ISOTOPES
SULFUR
TRANSITION ELEMENTS