Ethylene hydrogenation over supported nickel-palladium catalysts
Journal Article
·
· J. Catal.; (United States)
Preliminary tests showed that the crystallite size of silica-supported Ni/Pd alloys (10% loading, reduced at 500/sup 0/C) increased from approx. 50 A. to over 500 A. as the silica surface area decreased from 430 to 3 sq m/g, and that it was impossible to produce a series of well-homogenized alloys on silica, especially at high nickel contents. Hydrogenation of ethylene at -100/sup 0/C on two series of catalysts (one hydrogen-reduced at 500/sup 0/C; the other hydrogen-reduced at 200/sup 0/C, air-calcined at 800/sup 0/C, hydrogen-reduced at 450/sup 0/C) showed higher activities for all alloy compositions than for the pure supported metals, as was previously found for Ni/Pd films The calcined catalyst series had a distinct maximum at 70% palladium. The activity decrease at high palladium contents may be due to poisoning by dissolved hydrogen.
- Research Organization:
- Warren Spring Lab.
- OSTI ID:
- 6341453
- Journal Information:
- J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 62:1; ISSN JCTLA
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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Related Subjects
090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
AIR
ALKENES
ALLOYS
CALCINATION
CATALYST SUPPORTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CRYSTAL STRUCTURE
DATA
DECOMPOSITION
DIMENSIONS
ELEMENTS
ETHYLENE
EXPERIMENTAL DATA
FILMS
FLUIDS
GASES
HIGH TEMPERATURE
HYDROCARBONS
HYDROGEN
HYDROGENATION
INFORMATION
MINERALS
NICKEL ALLOYS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PALLADIUM ALLOYS
PLATINUM METAL ALLOYS
POISONING
PYROLYSIS
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SURFACE AREA
SURFACE PROPERTIES
TESTING
THERMOCHEMICAL PROCESSES
10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
AIR
ALKENES
ALLOYS
CALCINATION
CATALYST SUPPORTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CRYSTAL STRUCTURE
DATA
DECOMPOSITION
DIMENSIONS
ELEMENTS
ETHYLENE
EXPERIMENTAL DATA
FILMS
FLUIDS
GASES
HIGH TEMPERATURE
HYDROCARBONS
HYDROGEN
HYDROGENATION
INFORMATION
MINERALS
NICKEL ALLOYS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PALLADIUM ALLOYS
PLATINUM METAL ALLOYS
POISONING
PYROLYSIS
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SURFACE AREA
SURFACE PROPERTIES
TESTING
THERMOCHEMICAL PROCESSES