Conversion of synthesis gas to liquid hydrocarbons

Details Conversion of synthesis gas to liquid hydrocarbons Conversion of synthesis gas to liquid hydrocarbons

1989-03-17

1990-12-18

Mars, Howard T.

Chemistry: fischer-tropsch processes; or purification or recover

Including regeneration of catalyst

518700, 518713, C07C 104

Patent

active

049786890

ABSTRACT:
The medium pressure Fischer-Tropsch synthesis of liquid hydrocarbons conducted with an iron catalyst is made more efficient by temporarily suspending conventional synthesis and treating the catalyst with a high partial pressure of water vapor, after which conventional synthesis is resumed. The treatment inparts a large increase in selectivity for liquids with reduction of methane formation. The treatment is very effective with alkali (e.g. potassium) promoted precipitated iron catalyst.

REFERENCES:
patent: 2497964 (1950-02-01), Sumerford
patent: 2544574 (1951-03-01), Walker et al.
patent: 4252736 (1981-02-01), Haag et al.
patent: 4338089 (1982-07-01), Schaper et al.
L. Koenig et al., "The Influence of Water and of Alkali Promoter on the Carbon Number Distribution, etc." Ber. Bunsenges. Phys. Chem., 91, 116-121 (1987).

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