文献类型：期刊文献

英文题名：Regulating the acid sites and framework aluminum siting in MCM-22 zeolite to enhance its performance in alkylation of benzene with methanol

作者：Wang, Yilin[1];Xu, Shufang[1];He, Xuan[1];Yang, Fan[1];Zhu, Xuedong[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2022

卷号：332

外文期刊名：MICROPOROUS AND MESOPOROUS MATERIALS

收录：;EI(收录号：20220411494224);WOS:【SCI-EXPANDED(收录号:WOS:000761794700002)】；

基金：This program was supported financially by the National Natural Science Foundation of China (No. 21776076) and the Fundamental Research Funds for the Central Universities (JKA01211710) .

语种：英文

外文关键词：Zeolite; Acid site; Al siting; Alkylation; Benzene

摘要：As a typical reaction process catalyzed by acid sites, the alkylation of benzene with methanol significantly depends on the distribution of acid sites in zeolite. Herein, an MCM-22 zeolite with regulated acid sites and framework aluminum (AlF) siting was successfully synthesized by the insertion of boron. Proper boron incorporation can bring to a concentration of the Bronsted acid sites (BSites) in the 10-membered ring (10MR) sinusoidal channels, which provide a good shape-selective space for alkylation of benzene with methanol. Meanwhile, the decrease in BSites in the supercages and external pockets leads to an alleviation of the coking process and formation of ethylbenzene, enhancing the catalytic life and capacity of containing deposits.