Method for preparing a promoted iron catalyst and catalyst prepa

Details Method for preparing a promoted iron catalyst and catalyst prepa Method for preparing a promoted iron catalyst and catalyst prepa

1989-03-17

1991-02-19

Shine, W. J.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

B01J 2378

Patent

active

049944282

ABSTRACT:
A novel Fischer Tropsch iron catalyst that has unusually high selectivity for liquid hydrocarbons (low selectivity for methane) is provided. The catalyst is prepared by treatment of the usual inactive catalyst precursor with water vapor at elevated temperature either after conventional activation by syngas or concurrently therewith. Surprisingly, the "selectivation" with water vapor does not affect catalytic activity. The novel "selectivated" catalyst may be used to advantage either to increase temperature and throughput, or to increase liquid hydrocarbon selectivity, compared with conventional catalyst that has not been "selectivated".

REFERENCES:
patent: 2541671 (1951-02-01), Segura et al.
patent: 4252736 (1981-02-01), Haag et al.
patent: 4338089 (1982-07-01), Schaper et al.
L. Konig 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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