摘要:
The present invention teaches a method for increasing the cobalt surface area per gram of catalyst in a cobalt Fischer-Tropsch catalyst, supported on a silica-based carrier material, by using cobalt amine carbonate precursors. A Fischer-Tropsch catalyst preferably includes a catalytically active first metal containing cobalt, and a carrier material containing silica or a silica compound with a cobalt surface area greater than 13 m2/g catalyst. The catalyst active in the FT reaction has a minimum alpha value of 0.87 and a CO conversion of 24 wt % or more. In accordance with another preferred embodiment, a process for producing a Fischer-Tropsch catalyst includes saturating silica or silica compounds with a solution of cobalt amine carbonate, removing the excess solution by filtration, heating the resulting product in order to allow cobalt hydroxycarbonate to precipitate, and drying and calcining the resulting product. Optionally the calcined product is reduced.
摘要:
A process for producing hydrocarbons by the Fischer-Tropsch process is provided in which a cobalt-containing catalyst is supported on a modified zirconia support selected from among silica-zirconia, tungstated zirconia, and sulfated zirconia. The catalyst shows improved performance of up to 70% in the Fischer-Tropsch reaction as compared to a corresponding catalyst supported on unmodified zirconia.
摘要:
A method for making a catalyst is provided that features loading a catalytic metal to a support using at least two different precursor compounds of that said metal; and loading the promoter to the support in an amount effective so as to achieve similar promotion as for a comparable catalyst comprising a greater amount of the promoter using only one precursor compound, where the catalytic metal is selected from among Group 8 metals, 9 metal, Group 10 metals, and combinations thereof. The promoter is preferably boron, silver, a noble metal, or combination thereof. Also provided are catalysts made by the method and Fischer-Tropsch processes that include contacting synthesis gas with a catalyst made by the method.
摘要:
A catalyst and process for producing hydrocarbons using the catalyst is provided. The process involves contacting a feed stream comprising hydrogen and carbon monoxide with the catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons. In accordance with this invention the catalyst used in the process includes at least one catalytic metal for Fischer-Tropsch reactions, preferably cobalt. The catalyst further includes a structural component, preferably a support, that includes a metal selected from the group consisting of oxides of Group 2 metals, Group 3 metals, Group 6 metals, Group 8 metals, Group 12 metals, Group 15 metals, and combinations thereof, preferably as the oxide.