CO-SUPPORTED COMPOUND FORMATION IN SUPPORTED C0 FISCHER-TROPSCH CATALYSTS
James G. Goodwin, Jr.
Department of Chemical Engineering
March 19, 2001 4:00pm
Speaker combined with TriState Catalysis Club's March Meeting
Supported cobalt catalysts are the preferred catalysts for Fischer-Tropsch synthesis (FTS) based on natural gas because of their high activity for FTS, high selectivity to linear hydrocarbons, low activity for the water gas shift reaction, and low cost compared to Ru. However, the formation of cobalt-support compounds can occur during pretreatment and/or under reaction conditions, leading to lower activity of a catalyst which is not reversible. Water vapor has been found to have a major impact on this formation. Since water vapor is a byproduct of metal catalyst reduction and a byproduct of reaction, it is very important to fully understand its effect on Co-support compound formation, the nature of the compounds formed, and how this compound formation may be prevented. This presentation focuses on recent work in this area in our laboratories to explore these issues.