Manufacture of light olefins
AssigneeMobil Oil Corporation
InventorsClarence D. Chang, William H. Lang, Anthony J. Silvestri
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Abstract
A catalytic process is provided for converting a charge consisting essentially of methanol, dimethyl ether or mixtures thereof to a hydrocarbon product rich in ethylene and propylene by contact, under conversion conditions, with a catalyst comprising a crystalline aluminosilicate zeolite characterized by pores, the major dimension of which is less than 6 Angstroms and the capability, under said conditions, of producing less than 20 weight percent methane in said hydrocarbon product.
Claims12
A catalytic process for converting a charge consisting essentially of methanol, dimethyl ether or mixtures thereof to a hydrocarbon product rich in ethylene and propylene which comprises contacting said charge under conversion conditions including a temperature between about 500.degree. F and about 1100.degree. F, a pressure from about 0.2 to 30 atmospheres and a liquid hourly space velocity of between about 0.1 and about 200 with a catalyst comprising a crystalline aluminosilicate zeolite characterized by pores, the major dimension of which is less than 6 Angstroms, further characterized by pore windows of about a size such as would be provided by 8-membered rings of oxygen atoms and the capability, under said conditions, of producing less than 20 weight percent methane in said hydrocarbon product.
Dependencies are inferred from the claim text.