China Petroleum Chemical Corporation

Fushun Research Institute of Petroleum and Petrochemicals, Sinopec Corp.

Ming Chen

Kai Qiao

Shumei Zhang

Qingtong Zhai

Chunmei Wang

Changxin Guo

Disclosed is a catalyst for preparing isobutene by dissociation of methyl tert-butyl ether, the catalyst comprising amorphous silica alumina and a silicalite-1 molecular sieve, wherein the total IR acid amount of weak acids in the catalyst is in a range from 0.020 to 0.080 mmol/g, and the ratio of B acid/L acid of the weak acids is in a range from 2.5:1 to 4.0:1. Also provided is a method of preparing the catalyst and the use thereof. The catalyst has a high selectivity with respect to isobutene, and high conversion of methyl tert-butyl ether, and can also effectively inhibit formation of the by-product dimethyl ether.

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Liaoning, China

Ming Chen