Properties of alloy catalysts for Fischer-Tropsch synthesis

Conference · Sun Dec 31 23:00:00 EST 1978 · 72nd AIChE Annu. Meet. Prepr.; (United States)

OSTI ID:6408951

Aschenbeck, D P; Kostka, W D; Lauderback, L L; Stanfield, R M; Delgass, W N

Fischer-Tropsch synthesis at 520/sup 0/K and 1 atm of a 3:1 mole mixture of hydrogen with carbon monoxide over silica-supported bimetallic catalysts containing iron gave high C/sub 3/ olefin yields with iron-ruthenium catalyst, mostly methane with alloys of iron with rhodium or nickel, a maximum higher hydrocarbon production with iron-cobalt catalyst, and a behavior close to that of pure iron for the iron-gold catalyst. For the iron-cobalt system, a maximum in C/sub 2/ and higher hydrocarbons occurred at 40% cobalt and a maximum in carbon dioxide production at 25% cobalt. The data were taken near 4% conversion. The Moessbauer effect confirmed that iron readily forms alloys with rhodium, ruthenium, nickel, and cobalt on silica, but that the range of solid solubility of iron in gold is limited to < 25 at. %. Preliminary transient studies indicate that carbide, carbon, and hydrogen inventories on the surface influence kinetic behavior and suggest that one effect of alloying is to change the balance of these species.

• Research Organization: Purdue Univ.
• OSTI ID: 6408951
• Report Number(s): CONF-791108-
• Journal Information: 72nd AIChE Annu. Meet. Prepr.; (United States), Journal Name: 72nd AIChE Annu. Meet. Prepr.; (United States) Vol. 77E
• Country of Publication: United States
• Language: English

Related Subjects

090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ALKENES
ALLOYS
BIMETALS
CATALYSTS
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
DATA
EXPERIMENTAL DATA
FISCHER-TROPSCH SYNTHESIS
HYDROCARBONS
INFORMATION
KINETICS
MOESSBAUER EFFECT
NUMERICAL DATA
ORGANIC COMPOUNDS
PHASE STUDIES
REACTION KINETICS
SOLIDS
SOLUBILITY
SURFACE PROPERTIES