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AssigneeEnergy International Corporation
InventorsAlan H. Singleton, Rachid Oukaci, James G. Goodwin
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A method for reducing catalyst attrition losses in hydrocarbon synthesis processes conducted in high agitation reaction systems; a method of producing an attrition-resistant catalyst; a catalyst produced by such method; a method of producing an attrition-resistant catalyst support; and a catalyst support produced by such method. The inventive method of reducing catalyst attrition losses comprises the step of reacting a synthesis gas in a high agitation reaction system in the presence of a catalyst. In one aspect, the catalyst preferably comprises a γ-alumina support including an amount of titanium effective for increasing the attrition resistance of the catalyst. In another aspect, the catalyst preferably comprises a γ-alumina support which has been treated, after calcination, with an acidic, aqueous solution. The acidic aqueous solution preferably has a pH of not more than about 5. In another aspect, the catalyst preferably comprises cobalt on a γ-alumina support wherein the cobalt has been applied to the γ-alumina support by totally aqueous, incipient wetness-type impregnation. In another aspect, the catalyst preferably comprises cobalt on a γ-alumina support with an amount of a lanthana promoter effective for increasing the attrition resistance of the catalyst. In another aspect, the catalyst preferably comprises a γ-alumina support produced from boehmite having a crystallite size, in the 021 plane, in the range of from about 30 to about 55 Ångstrons. In another aspect, the inventive method of producing an attrition-resistant catalyst comprises the step of treating a γ-alumina support, after calcination of and before adding catalytic material to the support, with an acidic solution effective for increasing the attrition resistance of the catalyst. In another aspect, the inventive method of producing an attrition-resistant catalyst support comprises the step of treating calcined γ-alumina with an acidic, aqueous solution effective for increasing the attrition resistance of the γ-alumina.
A method for reducing catalyst attrition losses in hydrocarbon synthesis processes conducted in high agitation reaction systems, said method comprising the step of reacting a synthesis gas in a high agitation reaction system in the presence of a catalyst comprising a γ-alumina support, wherein said γ-alumina support includes an amount of titanium effective for increasing the attrition resistance of said catalyst in said high agitation reaction system.
A method for reducing catalyst attrition losses in hydrocarbon synthesis processes conducted in high agitation reaction systems, said method comprising the step of reacting a synthesis gas in a high agitation reaction system in the presence of a catalyst comprising a γ-alumina support which has been treated, after calcination, with an acidic aqueous solution.
A method for reducing catalyst attrition losses in hydrocarbon synthesis processes conducted in high agitation reaction systems, said method comprising the step of reacting a synthesis gas in a high agitation reaction system in the presence of a catalyst comprising cobalt on a γ-alumina support, said cobalt being present on said support in an amount in the range of from about 10 pbw to about 70 pbw per 100 pbw of said γ-alumina support and said cobalt having been applied to said γ-alumina support by totally aqueous impregnation using an effective composition, and an effective amount, of an aqueous solution to achieve incipient wetness of said γ-alumina support with said amount of said cobalt, said aqueous solution having a pH of not more than about 5.
A method for reducing catalyst attrition losses in hydrocarbon synthesis processes conducted in slurry bubble column reactors, said method comprising the step of reacting a synthesis gas in a slurry bubble column reactor in the presence of a catalyst comprising cobalt, on a γ-alumina support, and an amount of a lanthana promoter effective for increasing the attrition resistance of said catalyst in said slurry bubble column reactor.
A method of producing an attrition resistant catalyst having a calcined γ-alumina support, said method comprising the step, after calcination of but before adding catalytic material to said support, of treating said support with an acidic aqueous solution having an acidity level effective for increasing the attrition resistance of said catalyst.
A method of producing an attrition resistant catalyst support, said method comprising the step of treating calcined γ-alumina with an acidic aqueous solution having an acidity level effective for increasing the attrition resistance of said calcined γ-alumina.
A catalyst having improved attrition resistance, said catalyst comprising a calcined γ-alumina support and said catalyst having been produced by a method comprising the step, after calcination of but before adding catalytic materials to said support, of treating said support with an acidic aqueous solution having an acidity level effective for increasing the attrition resistance of said catalyst.
A catalyst support having improved attrition resistance, said catalyst support being produced by a method comprising the step of treating calcined γ-alumina with an acidic aqueous solution having an acidity level effective for increasing the attrition resistance of said calcined γ-alumina.
A method of reducing catalyst attrition losses in hydrocarbon synthesis processes conducted in high agitation reaction systems, said method comprising the step of reacting a synthesis gas in a high agitation reaction system in the presence of a catalyst comprising a γ-alumina support, wherein said γ-alumina support is produced from boehmite having a crystallite size, in the 021 plane, in the range of from about 30 to about 55 Ångstroms.
Dependencies are inferred from the claim text.