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Title: The hydrocarbon selectivity of cobalt Fischer-Tropsch catalysts

Abstract

A cobalt Fischer-Tropsch catalyst was studied in a continuous-flow, well-stirred slurry reactor at 220 to 240{degrees}C, 0.5 to 1.5 MPa, H{sub 2}/CO feed ratios between 1.5 and 3.5, H{sub 2} conversions between 6 and 68%, and CO conversions between 11 and 73%. Increasing space velocity (decreasing conversion) or decreasing reactor H{sub 2}/CO ratio decreased the yield of (undesired) C{sub 1} products and increased the yield of (desired) C{sub 10}+ products. Reactor temperature and pressure had little effect on the carbon number distribution. These findings are interpreted in terms of the extent of the readsorption of 1-alkenes into growing chains on the catalyst surface. The relative selectivity to 1-alkenes by the primary synthesis and secondary reaction of l-alkenes to n-alkanes and 2-alkenes depends on reactor H{sub 2}/CO ratio and CO concentration. 25 refs., 15 figs.

Authors:
;
Publication Date:
Research Org.:
Massachusetts Inst. of Tech., Cambridge, MA (United States). Dept. of Chemical Engineering
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
5175068
Report Number(s):
DOE/PC/79816-T1
ON: DE91018065
DOE Contract Number:  
AC22-87PC79816
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 10 SYNTHETIC FUELS; CARBON MONOXIDE; QUANTITY RATIO; COBALT; CATALYTIC EFFECTS; HYDROGEN; ALKANES; ALKENES; CATALYSTS; CHEMICAL REACTORS; FISCHER-TROPSCH SYNTHESIS; METHANOL; PRESSURE EFFECTS; SYNTHESIS GAS; TEMPERATURE EFFECTS; YIELDS; ALCOHOLS; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; CHEMICAL REACTIONS; ELEMENTS; FLUIDS; GASES; HYDROCARBONS; HYDROXY COMPOUNDS; METALS; NONMETALS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; TRANSITION ELEMENTS; 010408* - Coal, Lignite, & Peat- C1 Processes- (1987-); 100200 - Synthetic Fuels- Production- (1990-)

Citation Formats

Yates, I C, and Satterfield, C N. The hydrocarbon selectivity of cobalt Fischer-Tropsch catalysts. United States: N. p., 1991. Web.
Yates, I C, & Satterfield, C N. The hydrocarbon selectivity of cobalt Fischer-Tropsch catalysts. United States.
Yates, I C, and Satterfield, C N. Mon . "The hydrocarbon selectivity of cobalt Fischer-Tropsch catalysts". United States.
@article{osti_5175068,
title = {The hydrocarbon selectivity of cobalt Fischer-Tropsch catalysts},
author = {Yates, I C and Satterfield, C N},
abstractNote = {A cobalt Fischer-Tropsch catalyst was studied in a continuous-flow, well-stirred slurry reactor at 220 to 240{degrees}C, 0.5 to 1.5 MPa, H{sub 2}/CO feed ratios between 1.5 and 3.5, H{sub 2} conversions between 6 and 68%, and CO conversions between 11 and 73%. Increasing space velocity (decreasing conversion) or decreasing reactor H{sub 2}/CO ratio decreased the yield of (undesired) C{sub 1} products and increased the yield of (desired) C{sub 10}+ products. Reactor temperature and pressure had little effect on the carbon number distribution. These findings are interpreted in terms of the extent of the readsorption of 1-alkenes into growing chains on the catalyst surface. The relative selectivity to 1-alkenes by the primary synthesis and secondary reaction of l-alkenes to n-alkanes and 2-alkenes depends on reactor H{sub 2}/CO ratio and CO concentration. 25 refs., 15 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {7}
}

Technical Report:
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