TITLE: Improved Fischer-Tropsch Synthesis catalysts for indirect coal liquefaction. Quarterly technical progress report No. 8, 1 July-30 September 1987.

AUTHOR: G. T. Tong;   R. B. Wilson;   J. G. McCarty.

INST.  AUTHOR: SRI International, Menlo Park, CA.

SPONSOR: Department of Energy, Washington, DC.

LANGUAGE: English

PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  1987,  17p.

NTIS ORDER NO.: DE90017887INW

NOTES: Sponsored by Department of Energy, Washington, DC.

ABSTRACT:

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. (ERA citation 15:048075)

REPORT  NUMBER: DOE/PC/80016-T9

CONTRACT  NUMBER: AC22-85PC80016