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U.S. Department of Energy
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Improved Fischer-Tropsch Synthesis catalysts for indirect coal liquefaction

Technical Report ·
OSTI ID:6630687
The monoruthenium cluster catalyst with a molecular sieve support and the tetraruthenium cluster catalyst with a sodium-Y zeolite support have been examined for Fischer-Tropsch Synthesis (FTS) performance at high pressure (6.9 MPa) in a slurry reactor and compared with conventional ruthenium with an alumina support and clean fused iron catalysts. Of the four catalysts tested, only the conventional ruthenium catalyst exhibited a chain growth factor of 0.88 and a methane selectivity of 6.6%, which are typical of slurry reactor results reported for iron catalysts under similar conditions. The other three catalysts tested showed low chain growth factors (ranging from 0.44 to 0.57) and high methane selectivity (ranging from 20 to 32%). A cobalt catalyst with approximately 50% sulfur coverage was prepared and tested for FTS activity and selectivity at ambient pressure and compared with the FTS performance of the clean and fully sulfided cobalt catalysts. The introduction of sulfur caused a decrease in methane selectivity and an increase in olefin selectivity with only a moderate decline in activity. 1 ref., 2 tabs.
Research Organization:
SRI International, Menlo Park, CA (USA)
Sponsoring Organization:
DOE/FE
DOE Contract Number:
AC22-85PC80016
OSTI ID:
6630687
Report Number(s):
DOE/PC/80016-T9; ON: DE90017887
Country of Publication:
United States
Language:
English