Importance of metal location in M-H zeolite for synergistically catalyzing dimethyl ether carbonylation

Shiyue Li; Shouying Huang; Kai Cai; Ying Li; Jing Lv; Xinbin Ma

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Importance of metal location in M-H zeolite for synergistically catalyzing dimethyl ether carbonylation

Catalysis, Kinetics and Reaction Engineering | Updated：2026-01-06

- Importance of metal location in M-H zeolite for synergistically catalyzing dimethyl ether carbonylation
- Chinese Journal of Chemical Engineering Vol. 41, Issue 1, Pages: 350-357(2022)
- Affiliations：
  
  Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University,Tianjin,China,300350
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2022
- Accepted：
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Shiyue Li, Shouying Huang, Kai Cai, Ying Li, Jing Lv, Xinbin Ma. Importance of metal location in M-H zeolite for synergistically catalyzing dimethyl ether carbonylation[J]. Chinese Journal of Chemical Engineering, 2022, 41(1): 350-357.
DOI：

Shiyue Li, Shouying Huang, Kai Cai, Ying Li, Jing Lv, Xinbin Ma. Importance of metal location in M-H zeolite for synergistically catalyzing dimethyl ether carbonylation[J]. Chinese Journal of Chemical Engineering, 2022, 41(1): 350-357. DOI：

摘要

Abstract

Mordenite (MOR) has shown great potential to catalyze dimethyl ether (DME) carbonylation to methyl acetate (MA) in industry. The synergy between metal species and Brønsted acid sites accelerates DME conversion. Here we designed and prepared two catalysts with different Ag locations by seed-directed growth method and two-step impregnation method (named as Ag@HMOR and Ag/HMOR-out

respectively)

to explain the effect of Ag location on catalytic performance. The results of TEM

XPS

CO-IR and UV–Vis showed that Ag species mainly presented as Ag

species over both Ag@HMOR and Ag/HMOR-out. Meanwhile

species mainly located in the micropores of Ag@HMOR

while as for Ag/HMOR-out

mainly existed on external surface. After comparing the performance of the catalysts with different Ag positions

we confirmed that the Ag

species encapsulated in the channels of HMOR promoted the DME carbonylation

which revealed the importance of spatial adjacency on the acid-metal catalysts.

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