Hydrocarbon synthesis using catalysts formed by intermetallic compound decomposition

Conference · Wed Mar 01 04:00:00 EST 1978 · Prepr., Div. Pet. Chem., Am. Chem. Soc.; (United States)

OSTI ID:6715556

Elattar, A; Wallace, W E; Craig, R S

Results clearly show that active catalysts can be formed by the decomposition of intermetallic compounds. The RNi/sub 5/ compounds, which under reaction conditions decompose into Ni/R/sub 2/O/sub 3/, exhibit kinetic parameters which are strong functions of the nature of R. Why this is so remains to be clarified. The two actinide intermetallics, ThNi/sub 5/ and UNi/sub 5/, decompose to give Ni/ThO/sub 2/ and Ni/UO/sub 2/. The former is very active and is relatively resistant to H/sub 2/S poisoning, whereas the latter is only weakly active and is easily poisoned by H/sub 2/S. The differing behavior of these two materials has been studied and partially elucidated by Auger spectroscopy and characteristic energy loss spectroscopy. Ni in Ni/UO/sub 2/ becomes heavily overlaid with graphite whereas with thoria as the substrate this does not happen. The plasmon oscillation behavior of the substrates, which is now under study, exhibits sufficiently different behavior from catalyst-to-catalyst as to suggest substantially different electronic nature of the oxide substrate. Perhaps this underlies the variation in observed kinetic parameters of the several supported Ni catalysts.

• Research Organization: Univ. of Pittsburgh
• OSTI ID: 6715556
• Report Number(s): CONF-780305-P1
• Conference Information: Journal Name: Prepr., Div. Pet. Chem., Am. Chem. Soc.; (United States) Journal Volume: 23:2
• Country of Publication: United States
• Language: English

Related Subjects

090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ACTINIDE ALLOYS
ALKANES
ALLOYS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
CRYOGENIC FLUIDS
DECOMPOSITION
FISCHER-TROPSCH SYNTHESIS
FLUIDS
HYDROCARBONS
INTERMETALLIC COMPOUNDS
METHANATION
METHANE
NICKEL ALLOYS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RARE EARTH ALLOYS
THORIUM ALLOYS
URANIUM ALLOYS