Abstract

A multistage synthesis of the catalyst for the gas-phase alkylation of benzene with ethylene is implemented. A highly active catalyst is synthesized from zeolite ZSM-5 using thermal-vapor treatment. The obtained catalyst possesses an optimal acidity, which makes it possible to achieve a higher yield of ethylbenzene compared to the commercial catalyst based on ZSM-5 (88 and 62.7 wt %, respectively), an approximately equal ethylbenzene selectivity, and an almost three times lower concentration of the undesirable xylene impurity in an alkylate (0.004 and 0.011 wt %, respectively) in the gas-phase benzene alkylation with ethylene.

中文翻译：

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苯与乙烯气相烷基化的含沸石催化剂的合成

摘要

实现了用于苯与乙烯的气相烷基化的催化剂的多阶段合成。使用热蒸气处理法从ZSM-5沸石合成高活性催化剂。所获得的催化剂具有最佳的酸度，与基于ZSM-5的市售催化剂（分别为88和62.7 wt％）相比，可以获得更高的乙苯收率，大约相等的乙苯选择性和几乎三倍的乙苯收率。在用乙烯进行的气相苯烷基化中，烷基化物中的不希望有的二甲苯杂质的浓度较低（分别为0.004和0.011wt％）。