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US 11,123,719 B2Granted
Metal-loaded zeolite catalysts for the halogen-free conversion of dimethyl ether to methyl acetate
AssigneeEnerkem, Inc.
InventorsAllen Artur Carl Reule, Natalia Semagina, Esteban Chornet
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Abstract
A catalyst for the carbonylation of dimethyl ether to methyl acetate. The catalyst comprises a zeolite, such as a mordenite zeolite, at least one Group IB metal, such as copper, and/or at least one Group VIII metal, such as iron, and at least one Group IIB metal, such as zinc. Such a catalyst with combined metals provides enhanced catalytic activity, improved stability, and improved selectivity to methyl acetate, and does not require a halogen promoter, as compared to a metal-free or copper only zeolite.
Claims18
A method of treating a catalyst comprising:
- (i) a zeolite selected from the group consisting of mordenite zeolites, zeolite Beta, ferrierite, zeolite Y, ZSM-5, ZSM-23, ZSM-35, and ZSM-57;
- (ii) zinc;
- and (iii) copper, said method consisting essentially of contacting said catalyst with a gas comprising oxygen and an inert gas.
Dependencies are inferred from the claim text.