Progress in reducing the concentration of impurity ions in the methanol to acetic acid process
Zhang Hongxi1, Yu Chenyu1, Zhou Meibian2, Yang Xiande1, Gu Minglan3, Yang Jing1
1. Nanning Normal University, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning 530100, China;
2.Guangxi Huayi Energy Chemical Corporation Ltd., Qinzhou 535008, China; 3. Shanghai Huayi Energy Chemical Corporation Ltd.,Shanghai 200241, China
Acetic acid is a key raw material for the synthesis of organic compounds such as ethylene acetate, acetate, acetic anhydride and chloroacetic acid. The preparation of acetic acid by methanol carbonylation is the current mainstream process, however, trace impurity ions in the reaction solution have a significant impact on the activity and stability of the catalyst. The sources of impurity ions and their negative impact on catalyst performance were analyzed using the current mainstream Cativa process (iridium-based homogeneous catalytic system) as an example. The currently adopted impurity ion treatment strategies and highlights the application of ion exchange resin technology in impurity ion removal were reviewed. Some references for the normal production of acetic acid prepared by methanol carbonylation were provided.
张宏喜1，于晨雨1，周美边2，杨显德1，顾明兰3，杨 晶1. 甲醇制乙酸工艺中降低杂质离子浓度的研究进展[J]. 煤炭与化工, 2024, 47(8): 155-160.
Zhang Hongxi1, Yu Chenyu1, Zhou Meibian2, Yang Xiande1, Gu Minglan3, Yang Jing1. Progress in reducing the concentration of impurity ions in the methanol to acetic acid process. CCI, 2024, 47(8): 155-160.
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