ECR-1 Zeolites as Selective Catalysts for Carbonylation of Dimethyl Ether

The interpenetrating channel system in the EON structure creates optimized spatial constraints that enable its application in dimethyl ether (DME) carbonylation. ECR-1 zeolites were synthesized using 1,3,5-trioxane as the organic structure-directing agent. After selectively deactivating the Brønsted acid sites within the 12-MR, the Py-H-ECR-1 demonstrated enhanced apparent activity (84.4% methyl acetate (MA) selectivity) and stability. Investigating DME adsorption on ECR-1, we found that the methyl species Al(O-CH3)Si tends to form at the T9 site on the dah tiling. Mass spectrometry and in situ Fourier transform infrared spectroscopy verified the formation of MA and the carbonylation pathway. Transition-state calculations confirmed that CO insertion to form the acetyl species Al(O-COCH3)Si is the rate-determining step. These findings established ECR-1 as a promising zeolite catalyst for efficient MA production.

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Publication Details

Journal
ACS Catalysis
Published
2026-04-13
DOI
https://doi.org/10.1021/acscatal.5c09235
Primary Topic
Carbon dioxide utilization in catalysis
Type
article
Field-Weighted Citation Impact
0.00

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article

ECR-1 Zeolites as Selective Catalysts for Carbonylation of Dimethyl Ether

Wenjie Xiang, lishu shao, Tiancun Liu, Noritatsu Tsubaki et al.
ACS Catalysis
Carbon dioxide utilization in catalysis
article

ECR-1 Zeolites as Selective Catalysts for Carbonylation of Dimethyl Ether

Wenjie Xiang, lishu shao, Tiancun Liu, Noritatsu Tsubaki, Jie Yao, Song Lu, Jiaqi Fan, Weizhe Gao, Caixia Zhu, Minghui Tan, Chengwei Wang, Guohui Yang, Zhixin Yu
article en

Abstract

The interpenetrating channel system in the EON structure creates optimized spatial constraints that enable its application in dimethyl ether (DME) carbonylation. ECR-1 zeolites were synthesized using 1,3,5-trioxane as the organic structure-directing agent. After selectively deactivating the Brønsted acid sites within the 12-MR, the Py-H-ECR-1 demonstrated enhanced apparent activity (84.4% methyl acetate (MA) selectivity) and stability. Investigating DME adsorption on ECR-1, we found that the methyl species Al(O-CH3)Si tends to form at the T9 site on the dah tiling. Mass spectrometry and in situ Fourier transform infrared spectroscopy verified the formation of MA and the carbonylation pathway. Transition-state calculations confirmed that CO insertion to form the acetyl species Al(O-COCH3)Si is the rate-determining step. These findings established ECR-1 as a promising zeolite catalyst for efficient MA production.

ACS Catalysis
Zhejiang A & F University (CN), Qingdao University of Science and Technology (CN), Shaoxing University (CN), Chinese Academy of Sciences (CN), Dalian University of Technology (CN), Hefei Institutes of Physical Science (CN), Institute of Applied Energy (JP), Qingdao Institute of Bioenergy and Bioprocess Technology (CN), Nano Carbon (Poland) (PL), University of Toyama (JP)
Support for Pioneering Research Initiated by the Next Generation, National Natural Science Foundation of China, Japan Society for the Promotion of Science
Openalex Percentile: Top 22%
Carbon dioxide utilization in catalysis
DOISourceOpenAlex
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