TITLE: Improved Fischer-Tropsch Synthesis Catalysts for Indirect Coal Liquefaction: Quarterly Technical Progress Report No. 7 for the Period 1 April to 30 June 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],  9 Sep 87,  16p.

NTIS ORDER NO.: DE88000883/INW

ABSTRACT:

Three monomeric supported ruthenium catalysts were evaluated for Fischer-Tropsch performance with 1:1 H sub 2 :CO synthesis gas at 1 atm.  This effort completes the FTS evaluation of a series of nine supported multiatomic and atomic ruthenium catalysts prepared via organometallic reactions of tetra- and hexaruthenium hydrocarbonyls and allyl monoruthenium carbonyl complexes with acid sites on three support materials, alumina, sodium Y zeolite, and molecular sieve. The ruthenium catalyst supported on sodium Y zeolite had superior FTS performance relative to a conventionally prepared alumina-supported ruthenium catalyst. Its chain growth factor was higher, methane selectivity lower, and olefin-to-paraffin ratio for light hydrocarbons higher. The results for the molecular sieve catalyst under the same reaction conditions were inferior with low chain growth parameter and high methane selectivity. The C/sub 2+/ hydrocarbon synthesis rates of all the ruthenium catalysts were comparable. The effect of high-level sulfur chemisorption on the FTS performance of alumina-supported cobalt was also examined. The untreated cobalt catalyst had higher activity and higher methane selectivity relative to the standard fused iron catalyst. 4 figs., 2 tabs. (ERA citation 13:003207)

REPORT  NUMBER: DOE/PC/80016-T5

CONTRACT  NUMBER: AC22-85PC80016