TY - JOUR
T1 - Stable Zn@ZSM-5 catalyst via a dry gel conversion process for methanol-to-aromatics reaction
AU - Liu, Min
AU - Cui, Teng
AU - Guo, Xinwen
AU - Li, Junjie
AU - Song, Chunshan
N1 - Funding Information:
The authors acknowledge the supporting of the National Key Research and Development Program of China (No. 2018YFB0604801 ), the National Natural Science Foundation of China (No. 21972013 ) and the China Scholarship Council .
Publisher Copyright:
© 2020
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/1
Y1 - 2021/1
N2 - A unique synthesis route to stabilize zinc species in ZSM-5 zeolite crystals was developed. Firstly, extensive mesoporosity in ZSM-5 was obtained through alkali treatment, after which Zn nanoparticles were introduced into the hierarchical ZSM-5 by impregnation. Then the sample was mixed with SiO2-sol and shaped. Finally, the Zn-fixed ZSM-5 zeolites was obtained by dry gel conversion. By this method, zinc species can be effectively stabilized in zeolite, which can not only improve the aromatic hydrocarbons selectivity, but also increase the stability of the catalyst in the reaction of methanol to aromatics (MTA). The acidity properties and the state of zinc species were studied. It was found that the catalyst possessed more Lewis acid sites and the ratio of Zn(OH)+/ZnO was increased after dry gel conversion.
AB - A unique synthesis route to stabilize zinc species in ZSM-5 zeolite crystals was developed. Firstly, extensive mesoporosity in ZSM-5 was obtained through alkali treatment, after which Zn nanoparticles were introduced into the hierarchical ZSM-5 by impregnation. Then the sample was mixed with SiO2-sol and shaped. Finally, the Zn-fixed ZSM-5 zeolites was obtained by dry gel conversion. By this method, zinc species can be effectively stabilized in zeolite, which can not only improve the aromatic hydrocarbons selectivity, but also increase the stability of the catalyst in the reaction of methanol to aromatics (MTA). The acidity properties and the state of zinc species were studied. It was found that the catalyst possessed more Lewis acid sites and the ratio of Zn(OH)+/ZnO was increased after dry gel conversion.
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U2 - 10.1016/j.micromeso.2020.110696
DO - 10.1016/j.micromeso.2020.110696
M3 - Article
AN - SCOPUS:85095597246
SN - 1387-1811
VL - 312
JO - Microporous Materials
JF - Microporous Materials
M1 - 110696
ER -