Process for manufacturing olefins
AssigneeMobil Oil Corporation
InventorsClarence D. Chang, Cynthia T. Chu
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Abstract
Siliceous zeolites, particularly those of the ZSM-5 type having a crystal size of less than one micron have their activity enhanced for the conversion of alcohols and ethers to olefins by steaming.
Claims3
In a method for producing a hydrocarbon mixture rich in olefins wherein a feedstock consisting essentially of an alcohol or ether or mixture thereof is contacted with crystalline zeolite having an alpha value the improvement which comprises utilizing a crystalline zeolite ZSM-5 of no greater than 50, in the hydrogen form having a crystal size of about 0.02-0.5 micron which has been steamed from a higher alpha value down to an alpha value between 5 and 35 prior to contact with said feedstock.
Dependencies are inferred from the claim text.