Ruthenium promotion of Co/Al{sub 2}O{sub 3} Fischer-Tropsch catalysts
- Univ. of Pittsburgh, PA (United States)
The effect of Ru addition upon catalyst characteristics and performance in Fischer-Tropsch synthesis was investigated using a series of differently prepared, Ru-promoted Co/Al{sub 2}O{sub 3} leading to catalysts with higher reducibilities. Parallel to this effect, the number of reduced metal atoms exposed of the surface increased for the Ru-promoted catalysts. Ru-promoted catalysts showed an increase in CO hydrogenation activity; however, constant turnover frequencies for promoted and unpromoted catalysts suggest that the increase in the number of metal surface atoms caused the activity enhancement. Isotopic transient kinetic analysis of CO hydrogenation under methanation conditions gave identical results. Catalysts prepared by a co impregnation technique, avoiding chloride salts, appear to be optimal for the production of high-molecular-weight hydrocarbons. 36 refs., 7 figs., 4 tabs.
- OSTI ID:
- 447652
- Journal Information:
- Journal of Catalysis, Journal Name: Journal of Catalysis Journal Issue: 1 Vol. 160; ISSN 0021-9517; ISSN JCTLA5
- Country of Publication:
- United States
- Language:
- English
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