Publication Date:
2018
Description:
〈p〉Publication date: 15 October 2018〈/p〉
〈p〉〈b〉Source:〈/b〉 Catalysis Today, Volume 316〈/p〉
〈p〉Author(s): Liying Sun, Yaquan Wang, Hengbao Chen, Chao Sun, Fanjun Meng, Fei Gao, Xiao Wang〈/p〉
〈h5〉Abstract〈/h5〉
〈div〉〈p〉A series of ZnZSM-5 zeolites with hierarchical pores were prepared by a seed-induced method with the addition of cetyltrimethylammonium bromide (CTAB). The influence of the amounts of CTAB on the physicochemical properties of the zeolites was investigated by XRD, FTIR, SEM, TEM, N〈sub〉2〈/sub〉 adsorption and desorption, ICP-OES, XPS, NH〈sub〉3〈/sub〉-TPD and TG analysis. The results showed that Zn was partially incorporated in the zeolite framework; the addition of CTAB in the synthesis reduced the primary crystal size of the zeolite, but increased the specific surface area and mesopore volume. The catalytic performance of the prepared zeolites was evaluated for methanol to aromatics reaction in a fixed bed reactor. The lifetime of the catalysts was greatly enhanced by the addition of CTAB in the synthesis. The incorporation of Zn increased the selectivity of aromatics.〈/p〉〈/div〉
〈h5〉Graphical abstract〈/h5〉
〈div〉
〈p〉The presence of Zn species and CTAB during synthesis had an important effect on the aggregate morphology and catalytic performance.〈/p〉
〈p〉〈figure〉〈img src="https://ars.els-cdn.com/content/image/1-s2.0-S0920586118300154-fx1.jpg" width="500" alt="Graphical abstract for this article" title=""〉〈/figure〉〈/p〉
〈/div〉
Print ISSN:
0920-5861
Electronic ISSN:
1873-4308
Topics:
Chemistry and Pharmacology
,
Physics
