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Title: Improved Fischer-Tropsch synthesis catalysts for indirect coal liquefaction: Quarterly technical progress report No. 6 for the period 1 January to 31 March 1987

Abstract

Six surface-confined ruthenium cluster catalysts supported on alumina, sodium-Y zeolite, and molecular-sieve supports were tested for Fischer-Tropsch synthesis (FTS) activity and for methane and olefin-to-paraffin selectivity for syn gas with H/sub 2//CO = 1.0 at 100 kPa and 523 K. The tetraruthenium cluster catalyst supported on alumina had the highest FTS activity with a methane selectivity of 61%. The hexaruthenium cluster catalyst supported on sodium-Y zeolite had the lowest methane selectivity (36%) and the highest olefin selectivity (ethylene/ethane > 20). The Schulz-Flory product distribution and chain growth factors for all ruthenium cluster catalysts through C/sub 8/ were nearly independent of support type and cluster size. An unpromoted FTS cobalt catalyst supported on alumina was prepared to evaluate the effect of sulfur treatment on the methane selectivity and olefin-to-paraffin ratio of light hydrocarbons. A low-level sulfur-treated fused iron catalyst (20% monolayer sulfur coverage) was prepared and tested for FTS activity ad selectivity for syn gas with H/sub 2//CO = 1.0 at 100 kPa and 573 K. This sulfur-treated catalyst showed almost a twofold reduction in methane yield compared with the clean fused iron catalyst. The sulfur-treated catalyst also demonstrated good stability, showing no sign of deactivation throughout a 24-h synthesis run.more » Final FTS testing with sulfur-treated cobalt and the remaining ruthenium monomer catalysts will complete the screening phase of this project. 5 figs., 2 tabs.« less

Authors:
; ;
Publication Date:
Research Org.:
SRI International, Menlo Park, CA (USA)
OSTI Identifier:
6448931
Report Number(s):
DOE/PC/80016-T4
ON: DE87012047
DOE Contract Number:  
AC22-85PC80016
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
10 SYNTHETIC FUELS; CATALYSTS; CHEMICAL PREPARATION; PERFORMANCE TESTING; FISCHER-TROPSCH SYNTHESIS; CATALYST SUPPORTS; CATALYTIC EFFECTS; IRON; RUTHENIUM; SPECIFICITY; WAXES; CHEMICAL REACTIONS; ELEMENTS; METALS; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; PLATINUM METALS; SYNTHESIS; TESTING; TRANSITION ELEMENTS; 090121* - Hydrocarbon Fuels- Chemical Synthesis- (1976-1989)

Citation Formats

Tong, G T, Wilson, R B, and McCarty, J G. Improved Fischer-Tropsch synthesis catalysts for indirect coal liquefaction: Quarterly technical progress report No. 6 for the period 1 January to 31 March 1987. United States: N. p., 1987. Web.
Tong, G T, Wilson, R B, & McCarty, J G. Improved Fischer-Tropsch synthesis catalysts for indirect coal liquefaction: Quarterly technical progress report No. 6 for the period 1 January to 31 March 1987. United States.
Tong, G T, Wilson, R B, and McCarty, J G. Tue . "Improved Fischer-Tropsch synthesis catalysts for indirect coal liquefaction: Quarterly technical progress report No. 6 for the period 1 January to 31 March 1987". United States.
@article{osti_6448931,
title = {Improved Fischer-Tropsch synthesis catalysts for indirect coal liquefaction: Quarterly technical progress report No. 6 for the period 1 January to 31 March 1987},
author = {Tong, G T and Wilson, R B and McCarty, J G},
abstractNote = {Six surface-confined ruthenium cluster catalysts supported on alumina, sodium-Y zeolite, and molecular-sieve supports were tested for Fischer-Tropsch synthesis (FTS) activity and for methane and olefin-to-paraffin selectivity for syn gas with H/sub 2//CO = 1.0 at 100 kPa and 523 K. The tetraruthenium cluster catalyst supported on alumina had the highest FTS activity with a methane selectivity of 61%. The hexaruthenium cluster catalyst supported on sodium-Y zeolite had the lowest methane selectivity (36%) and the highest olefin selectivity (ethylene/ethane > 20). The Schulz-Flory product distribution and chain growth factors for all ruthenium cluster catalysts through C/sub 8/ were nearly independent of support type and cluster size. An unpromoted FTS cobalt catalyst supported on alumina was prepared to evaluate the effect of sulfur treatment on the methane selectivity and olefin-to-paraffin ratio of light hydrocarbons. A low-level sulfur-treated fused iron catalyst (20% monolayer sulfur coverage) was prepared and tested for FTS activity ad selectivity for syn gas with H/sub 2//CO = 1.0 at 100 kPa and 573 K. This sulfur-treated catalyst showed almost a twofold reduction in methane yield compared with the clean fused iron catalyst. The sulfur-treated catalyst also demonstrated good stability, showing no sign of deactivation throughout a 24-h synthesis run. Final FTS testing with sulfur-treated cobalt and the remaining ruthenium monomer catalysts will complete the screening phase of this project. 5 figs., 2 tabs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {6}
}

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