ZSM-5 / 11 eutectic molecular sieve catalyst, preparation method thereof and preparation method of 1, 2, 4-trimethylbenzene and durene

Abstract

The invention discloses a ZSM-5 / 11 eutectic molecular sieve catalyst, a preparation method thereof and a preparation method of unsym-trimethylbenzene and durene, and relates to the field of production of unsym-trimethylbenzene and durene. In order to improve the production yield of unsym-trimethylbenzene and durene, the catalyst used in production is optimized, and the small-grain ZSM-5 / 11 eutectic molecular sieve catalyst is prepared. By adopting the catalyst, heat release in reaction for preparing durene and unsym-trimethylbenzene can be effectively reduced, methanol does not need to be fed in sections, side reactions and by-products are reduced, and the yield of target products is further increased. The content of 1, 2, 4-trimethylbenzene in the generated product C9 hydrocarbon can reach 98% or above, the content of durene in C10 hydrocarbon can reach 80% or above, and the separation difficulty and the separation cost in follow-up treatment are reduced.

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