Catalyst for preparing isobutene by dissociation of methyl tert-butyl ether, preparation method and use thereof
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United States of America Patent
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Jul 18, 2017
Grant Date -
Sep 18, 2014
app pub date -
Oct 24, 2012
filing date -
Oct 25, 2011
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Abstract
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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