Synthesis gas reactions over catalysts formed by oxidation of thorium-containing intermetallic compounds

Journal Article · Mon Sep 01 04:00:00 EDT 1980 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(80)90285-7· OSTI ID:6456664

Imamura, H; Wallace, W E

Intermetallic compounds containing 1:1, 1:2, 1:5, and 7:3 thorium-nickel ratios were prepared, powdered, and treated with oxygen at room temperature or 350/sup 0/C. The resulting catalysts contained mainly thorium dioxide and metallic nickel, and the nickel dispersions, as measured by CO adsorption, were 1.1-6.0%. The catalysts were active for the reaction of 3:1 hydrogen/carbon monoxide in proportion to the amount of oxygen uptake during pretreatment, and were highly selective for methane formation. Turnover numbers of up to 10.6 were obtained at 205/sup 0/C. The methanation reaction over 3.9 and 25Vertical Bar3< nickel on thoria support prepared by the conventional impregnation method gave similar conversions at 490/sup 0/-510/sup 0/C as the oxidized intermetallic compounds did at approx. 200/sup 0/C.

• Research Organization: Univ. of Pittsburgh
• OSTI ID: 6456664
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 65:1; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical &amp; Physicochemical Properties
400301* -- Organic Chemistry-- Chemical &amp; Physicochemical Properties-- (-1987)
ACTINIDE COMPLEXES
CATALYTIC EFFECTS
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMPLEXES
DATA
DISPERSIONS
ELEMENTS
EXPERIMENTAL DATA
IMPREGNATION
INFORMATION
KINETICS
METALS
METHANATION
NICKEL
NICKEL COMPLEXES
NONMETALS
NUMERICAL DATA
OXYGEN
REACTION KINETICS
SYNTHESIS
THORIUM COMPLEXES
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS