Zn-Ag双金属改性丝光沸石催化剂在二甲醚羰基化反应中的性能研究

余江峰; 张海涛; 马宏方; 张皓荐; 钱炜鑫; 应卫勇

doi:10.12434/j.issn.2097-2547.20250082

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Zn-Ag双金属改性丝光沸石催化剂在二甲醚羰基化反应中的性能研究

低碳分子转化合成 | 更新时间：2026-02-02

- Zn-Ag双金属改性丝光沸石催化剂在二甲醚羰基化反应中的性能研究
- Study on performance of Zn-Ag bimetallic modified mordenite catalyst in dimethyl ether carbonylation reaction
- 低碳化学与化工 2026, 51(1): 54-62.
- 作者机构：
  
  1.华东理工大学化工学院大型工业反应器工程教育部工程研究中心化学工程联合国家重点实验室，上海 200237
  2.煤液化气化及高效低碳利用全国重点实验室，上海 200237
  3.宁波工程学院材料化学学院，浙江宁波 315200
- 作者简介：
  
  余江峰（1999—），硕士研究生，研究方向为低碳化工，E-mail：yujiangfeng0615@163.com。
  钱炜鑫（1983—），博士，副教授，研究方向为低碳化工，E-mail：wxqian@ecust.edu.cn。
- 基金信息：
  
  国家自然科学基金(22178113);中央高校基本科研业务费专项资金(JKA01231712;JKCA1241202)
- DOI：10.12434/j.issn.2097-2547.20250082
  中图分类号： TQ426
- 收稿：2025-03-04，
  
  修回：2025-04-15，
  
  纸质出版：2026-01-25
- 稿件说明：
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余江峰,张海涛,马宏方等.Zn-Ag双金属改性丝光沸石催化剂在二甲醚羰基化反应中的性能研究[J].低碳化学与化工,2026,51(1):54-62.

YU Jiangfeng,ZHANG Haitao,MA Hongfang,et al.Study on performance of Zn-Ag bimetallic modified mordenite catalyst in dimethyl ether carbonylation reaction[J].Low-Carbon Chemistry and Chemical Engineering,2026,51(1):54-62.
余江峰,张海涛,马宏方等.Zn-Ag双金属改性丝光沸石催化剂在二甲醚羰基化反应中的性能研究[J].低碳化学与化工,2026,51(1):54-62. DOI： 10.12434/j.issn.2097-2547.20250082.

YU Jiangfeng,ZHANG Haitao,MA Hongfang,et al.Study on performance of Zn-Ag bimetallic modified mordenite catalyst in dimethyl ether carbonylation reaction[J].Low-Carbon Chemistry and Chemical Engineering,2026,51(1):54-62. DOI： 10.12434/j.issn.2097-2547.20250082.

摘要

针对二甲醚（DME）羰基化反应中丝光沸石（MOR）催化剂易失活问题，采用离子交换法引入Zn和Ag双金属对MOR进行改性，旨在优化其酸性位点分布及孔道结构以提升催化性能。通过水热合成法制备了系列催化剂，结合XRD、ICP-AES、SEM、NH

-TPD和Py-IR等表征手段分析了其物化性质，并在固定床反应器中评价了其催化活性。结果表明，引入Ag后，催化剂八元环孔道的Brønsted酸量和酸强度明显增大；引入Zn后，十二元环孔道的Lewis酸量增大，可协同促进CO吸附及反应动力学。在200 ℃、1.0 MPa及空速2400 mL/(g·h)条件下，1Ag/2Zn-MOR催化性能最优。在该催化剂作用下反应3 h时，DME转化率达98%；反应25 h后，DME转化率仍保持90%且乙酸甲酯选择性始终大于99%。Zn-Ag双金属改性通过调控催化剂酸位分布与孔结构，可有效提升催化活性与稳定性，为DME羰基化高效催化剂的开发提供了理论依据。

Abstract

In response to the problem of easy deactivation of mordenite (MOR) catalyst in the dimethyl ether (DME) carbonylation reaction

the ion-exchange method was adopted to introduce Zn and Ag bimetals for the modification of MOR to optimize the distribution of acidic sites and the pore structure so as to enhance the catalytic performance. A series of catalysts were prepared by hydrothermal synthesis method

and their physicochemical properties were analyzed by characterization techniques

such as XRD

ICP-AES

SEM

-TPD and Py-IR. The catalytic activity was evaluated in a fixed bed reactor. The results show that after the introduction of Ag

both the amount and strength of Brønsted acid in eight-membered ring channels of the catalyst increase significantly. After the introduction of Zn

the amount of Lewis acid in the twelve-membered ring channels increases

which synergistically promotes the adsorption of CO and the reaction k

inetics. Under the conditions of 200 ℃

1.0 MPa and space velocity of 2400 mL/(g·h)

the 1Ag/2Zn-MOR catalyst demonstrates the optimal catalytic performance. After reaction for 3 h with the catalyst

the conversion rate of DME reaches 98%. Even after reaction for 25 h

the DME conversion rate still remains 90%

and the selectivity of methyl acetate is always greater than 99%. The modification with Zn-Ag bimetals can effectively enhance the catalytic activity and stability by regulating the distribution of acid sites and the pore structure of the catalyst

which provides a theoretical foundation for the development of highly efficient catalysts for DME carbonylation.

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references

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