Catalyst for converting synthesis gas to high octane predominantly olefinic naphtha
AssigneeMobil Oil Corporation
InventorsFrancis G. Dwyer, William E. Garwood
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Abstract
An improved catalyst composition is disclosed for converting synthesis gas to hydrocarbon mixtures. The catalyst comprises an iron-containing, Fischer-Tropsch catalyst and a crystalline zeolite having a silica-to-alumina ratio of greater than 200 (including zeolites containing essentially no alumina) and an (R.sub.2 O+M.sub.2 /.sub.n O):SiO.sub.2 rate of less than 1.1:1 where M is a metal other than a metal of Group IIIA, n is the valence of said metal, and R is an alkyl ammonium radical, said organosilicate being characterized by a specified x-ray diffraction pattern.
Claims8
A catalyst composition comprising an iron-containing Fischer-Tropsch component and a volume excess of a solid containing a crystalline zeolite, wherein the crystalline zeolite comprises a zeolite having a composition in its anhydrous state in terms of mole ratios of oxides as follows:
- (a) an Al.sub.2 O.sub.3 :SiO.sub.2 ratio within the range of from 0 to less than 0.005 Al.sub.2 O.sub.3 to more than 1 SiO.sub.2 and
- (b) an (xR.sub.2 O+(1-x) M.sub.2 /.sub.n O):SiO.sub.2 ratio of less than 1.1:1
- where M is a metal other than a metal of Group IIIA, n is the valence of said metal, R is tetraalkylammonium and x is a number greater than 0 but not exceeding 1, said zeolite having the x-ray diffraction lines set forth in Table 1 or Table 2 of the specification.
Dependencies are inferred from the claim text.