초록 ▼

A process for the preparation of catalysts wherein a catalytically effective amount of cobalt is impregnated and dispersed as a film, or layer, on the peripheral outer surface of a particulate porous inorganic oxide support, notably alumina, silica, silica-alumina and titania; particularly titania.

A process for the preparation of catalysts wherein a catalytically effective amount of cobalt is impregnated and dispersed as a film, or layer, on the peripheral outer surface of a particulate porous inorganic oxide support, notably alumina, silica, silica-alumina and titania; particularly titania. The catalysts are prepared by spraying a bed of the fluidized particulate support particles with a liquid containing a dispersed or dissolved cobalt metal compound upon the support particles. The operation is performed at specified operating conditions.

대표청구항 ▼

In a process for the production of catalysts wherein a catalytically effective amount of cobalt is impregnated and dispersed on the outer surface of a particulate porous inorganic oxide support to form a catalyst useful for the conversion of synthesis gas to hydro-carbons, and the support particles

In a process for the production of catalysts wherein a catalytically effective amount of cobalt is impregnated and dispersed on the outer surface of a particulate porous inorganic oxide support to form a catalyst useful for the conversion of synthesis gas to hydro-carbons, and the support particles are contacted with a spray containing a decomposable compound of cobalt, the improvement comprising maintaining a bed of the support particles in a fluidized state at temperature ranging from about 50°C. to about 100°C. by contact with a gas at temperature ranging from about 50°C. to about 100°C., spraying the bed of the heated support particles with a liquid in which a cobalt compound is dispersed at flow rate sufficient to provide a ratio between the flow rate of the liquid: flow rate of the fluidizing gas below about 0.6 grams liquid/ft3 of fluidizing gas to form on the particles a surface layer of cobalt compound in average thickness ranging from about 20 microns to about 250 microns, with the loading of cobalt compound ranging from about 0.01 g/cc to about 0.15 g/cc, calculated as metallic cobalt per packed bulk volume of catalyst.