Manufacture of light olefins
AssigneeMobil Oil Corporation
InventorPaul G. Rodewald
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Abstract
A catalytic process is provided for converting lower monohydric alcohols and their ethers, especially methanol and dimethyl ether, to a hydrocarbon mixture rich in C.sub.2 -C.sub.3 olefins, by contact, under conversion conditions, with a catalyst comprising a crystalline aluminosilicate zeolite having a silica to alumina mole ratio of at least about 12, a constraint index, as hereinafter defined, within the approximate range of 1 to 12 and containing, in cationic form, between about 0.01 and about 1.9 milliequivalents per gram of one or more metals characterized by an ionic radius exceeding 1 Angstrom.
Claims7
A process for producing hydrocarbons which comprises contacting, under conversion conditions, a charge consisting essentially of one or more lower monohydric alcohols having up to four carbon atoms, the ethers derived therefrom, or mixtures of said alcohols and ethers with a catalyst comprising a crystalline aluminosilicate zeolite having a crystal size within the approximate range of 1 to 2 microns, a silica to alumina ratio of at least about 12, a constraint index within the approximate range of 1 to 12 and containing, in cationic form, between about 0.01 and about 1.9 milliequivalents per gram of a metal selected from the group consisting of cesium and barium.
Dependencies are inferred from the claim text.