Enhancement of catalytic and anti-carbon deposition performance of SAPO-34/ZSM-5/quartz films in MTA reaction by Si/Al ratio regulation

Jiaxin Wu; Chenxiao Wang; Xianliang Meng; Haichen Liu; Ruizhi Chu; Guoguang Wu; Weisong Li; Xiaofeng Jiang; Deguang Yang

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Enhancement of catalytic and anti-carbon deposition performance of SAPO-34/ZSM-5/quartz films in MTA reaction by Si/Al ratio regulation

Full Length Article | Updated：2026-01-06

- Enhancement of catalytic and anti-carbon deposition performance of SAPO-34/ZSM-5/quartz films in MTA reaction by Si/Al ratio regulation
- Enhancement of catalytic and anti-carbon deposition performance of SAPO-34/ZSM-5/quartz films in MTA reaction by Si/Al ratio regulation
- 中国化学工程学报（英文版） 2023年56卷第4期页码：314-324
- Affiliations：
  
  1. School of Chemical Engineering and Technology, China University of Mining & Technology,Xuzhou,China,221116
  2. Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education,Xuzhou,China,221116
- Author bio：
- Funds：
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  中图分类号：
- 纸质出版：2023
- Accepted：
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Jiaxin Wu, Chenxiao Wang, Xianliang Meng, 等. Enhancement of catalytic and anti-carbon deposition performance of SAPO-34/ZSM-5/quartz films in MTA reaction by Si/Al ratio regulation[J]. 中国化学工程学报（英文版）, 2023,56(4):314-324.

Jiaxin Wu, Chenxiao Wang, Xianliang Meng, Haichen Liu, Ruizhi Chu, Guoguang Wu, Weisong Li, Xiaofeng Jiang, Deguang Yang. Enhancement of catalytic and anti-carbon deposition performance of SAPO-34/ZSM-5/quartz films in MTA reaction by Si/Al ratio regulation[J]. Chinese Journal of Chemical Engineering, 2023, 56(4): 314-324.
Jiaxin Wu, Chenxiao Wang, Xianliang Meng, 等. Enhancement of catalytic and anti-carbon deposition performance of SAPO-34/ZSM-5/quartz films in MTA reaction by Si/Al ratio regulation[J]. 中国化学工程学报（英文版）, 2023,56(4):314-324. DOI：

Jiaxin Wu, Chenxiao Wang, Xianliang Meng, Haichen Liu, Ruizhi Chu, Guoguang Wu, Weisong Li, Xiaofeng Jiang, Deguang Yang. Enhancement of catalytic and anti-carbon deposition performance of SAPO-34/ZSM-5/quartz films in MTA reaction by Si/Al ratio regulation[J]. Chinese Journal of Chemical Engineering, 2023, 56(4): 314-324. DOI：

摘要

Abstract

In order to further improve the catalytic performance of zeolite catalyst for methanol to aromatics (MTA) technology

the double-tier SAPO-34/ZSM-5/quartz composite zeolite films were successfully synthesized

via

hydrothermal crystallization. The Si/Al ratio of SAPO-34 film was used as the only variable to study this material. The composite zeolite material with 0.6Si/Al ratio of SAPO-34 has the largest mesoporous specific surface area and the most suitable acid distribution. The catalytic performance for the MTA process showed that 0.6-SAPO-34/ZSM-5/quartz film has as high as 50.3% benzene-toluene-xylene selectivity and 670 min lifetime. The MTA reaction is carried out through the path we designed to effectively avoid the hydrocarbon pool circulation of ZSM-5 zeolite

so as to improve the aromatics selectivity and inhibit the occurrence of deep side reactions to a great extent. The coke deposition behavior was monitored by thermogravimetric analysis and gas chromatograph/mass spectrometer

it is found that with the increase of Si/Al ratio

the active intermediates changed from low-substituted methylbenzene to high-substituted methylbenzene

which led to the rapid deactivation

of the catalyst. This work provides a possibility to employ the synergy effect of composite zeolite film synthesizing anti-carbon deposition catalyst in MTA reaction.

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