文献类型：期刊文献

英文题名：Synthesis of hierarchical porous H-mordenite zeolite for carbonylation of dimethyl ether

作者：Sheng, Haibing[1];Qian, Weixin[1];Zhang, Haitao[1];Zhao, Peng[1];Ma, Hongfang[1];Ying, Weiyong[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Minist Educ, Engn Res Ctr Large Scale Reactor Engn & Technol, Shanghai 200237, Peoples R China

年份：2020

卷号：295

外文期刊名：MICROPOROUS AND MESOPOROUS MATERIALS

收录：;EI(收录号：20195107877124);WOS:【SCI-EXPANDED(收录号:WOS:000510948000008)】；

基金：We acknowledge the financial support from the Fundamental Research Funds for the Central Universities (No.222201917013).

语种：英文

外文关键词：Hierarchical mordenite; Soft template; Carbonylation; Dimethyl ether; Methyl acetate

摘要：A series of hierarchical porous mordenite zeolites were prepared by adding soft template during hydrothermal process for carbonylation of dimethyl ether (DME) to methyl acetate (MA). The synthesized mordenite catalysts were systematically characterized by XRD, BET, ICP-AES, NH3-TPD, Py-IR, FTIR, HRTEM, SEM, TG, Al-27 NMR, Si-29 NMR and GC-MS. The characterization results confirmed that mordenite zeolites with mesoporous structure showed more framework aluminum and more Bronsted acid sites of 8-membered ring (8-MR), which promoted conversion of DME and MA selectivity. The hierarchical porous mordenite had increased the mass transfer efficiency and showed less acidity of 12-membered ring (12-MR), thus suppressing the formation of coke. Measurements of changes in the chemical composition of the coke by GC-MS showed the growth mechanism of coke molecules in the mordenite zeolites.