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主要采取原位红外的手段对β催化剂上苯与丙烯烷基化反应过程的机理进行了研究。研究结果表明，催化剂上吸附的丙烯与吸附的苯和异丙苯发生烷基化反应。当丙烯在强吸附位吸附太牢时，烷基化反应难以进行。
The mechanism of alkylation of benzene with propylene on β catalyst was studied mainly by in situ infrared. The results show that the catalyst on the adsorption of propylene and benzene and cumene adsorption occurred alkylation. When propylene is adsorbed too strongly on the strong adsorption site, the alkylation reaction is difficult to proceed.