Catalyst, method for catalyst manufacture and use

Claim 1

A Fischer-Tropsch type catalyst comprising a particulate synthetic zeolite catalyst support having a pore size in the range of 2-10 A, which has ion exchange properties, within which there is incorporated, by ion exchange, at least one reducible transition metal having catalytic properties effective in the conversion of CO and H 2 to hydrocarbon products consisting essentially of cobalt, said transition metal being reduced by the vapor of at least one preselected reductant metal consisting essentially of cadmium having a reduction potential greater than the reduction potential of said transition metal at a temperature below about 800° C.

Claim 3

The method of preparing a Fischer-Tropsch catalyst comprising in sequence: (a) contacting a particulate synthetic zeolite catalyst support having a pore size in the range of 2-10 A with a solution of a salt of a reducible transition metal having catalytic properties effective in the conversion of CO and H 2 to hydrocarbon products consisting essentially of cobalt; (b) drying to eliminate substantially all water from the zeolite pores; (c) reducing a substantial proportion of the transition metal within the dried reducible transition metal solution-treated zeolite prepared per step (b) by exposure to the vapor of a reductant metal consisting essentially of cadmium, having a reduction potential greater than the reduction potential of said transition metal at a temperature below about 800° C.; (d) heating the product of step (c) to remove superfluous reductant metal from said product of step (c); and (e) cooling under vacuum or in an inert atmosphere to a temperature below about 200° C.

Claim 4

The method of preparing a Fischer-Tropsch catalyst comprising in sequence: (a) contacting a particulate synthetic zeolite catalyst support having a pore size in the range of 2-10 A with a solution of a salt of a reducible transition metal having catalytic properties effective in the conversion of CO and H 2 to hydrocarbon products consisting essentially of cobalt; (b) drying to eliminate substantially all water from the zeolite pores; (c) reducing a substantial proportion of the transition metal within the dried reducible transition metal solution-treated zeolite prepared per step (b) by exposure to the vapor of a reductant metal consisting essentially of cadmium, having a reduction potential greater than the reduction potential of said transition metal at a temperature below about 800° C.; (d) heating the product of step (c) to remove superfluous reductant metal from said product of step (c); and (e) cooling under vacuum or in an inert atmosphere to a temperature below about 200° C.