PROCESS FOR REGENERATING A CATALYST AND RESULTANT REGENERATED CATALYST AND PRODUCTION OF OLEFINS BY CATALYTIC ETHER DECOMPOSITION USING REGENERATED CATALYST

摘要

2064040 9101804 PCTABS00003 A process for regenerating a catalyst which involves washing a catalyst with a liquid at a temperature within the range of about 50 ·C to about 70 ·C for a time sufficient to remove foulants thereby recovering catalyst activity. The wash liquid is preferably a member selected from the group consisting of ethers, alcohols and mixtures of ethers and alcohols wherein the ether is a tertiary alkyl ether, preferably selected from the group consisting of tertiary amyl methyl ether and methyl tertiary butyl ether, and wherein the alcohol is preferably selected from the group consisting of tertiary butyl alcohol and methanol. The catalyst is preferably a clay treated with an acid selected from the group consisting of hydrofluoric acid, hydrochloric acid and mixtures of hydrofluoric and hydrochloric acid, wherein the clay is preferably selected from the group consisting of montmorillonite, kaolinite, attapulgite, bentoninte and natural clay.