摘要
乙酸是合成乙酸乙烯、乙酸酯、乙酸酐和氯乙酸等有机化合物的关键原料。甲醇羰基化制备乙酸是目前的主流工艺,然而在反应液中微量的杂质离子对催化剂的活性和稳定性产生重大的影响。以当前主流的Cativa工艺(铱基均相催化体系)为例,分析了杂质离子的来源及其对催化剂性能的负面影响。综述了当前采用的杂质离子处理策略,并着重介绍了离子交换树脂技术在杂质离子去除中的应用。从而为甲醇羰基化制备乙酸的正常生产提供一定的参考。
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.
作者
张宏喜
于晨雨
周美边
杨显德
顾明兰
杨晶
Zhang Hongxi;Yu Chenyu;Zhou Meibian;Yang Xiande;Gu Minglan;Yang Jing(Nanning Normal University,Guangxi Key Laboratory of Natural Polymer Chemistry and Physics,Nanning 530100,China;Guangxi Huayi Energy Chemical Corporation Ltd.,Qinzhou 535008,China;Shanghai Huayi Energy Chemical Corporation Ltd.,Shanghai 200241,China)
出处
《煤炭与化工》
CAS
2024年第8期155-160,共6页
Coal and Chemical Industry
基金
广西科技重大专项(任务书编号:桂科AA23062019)。
关键词
乙酸
甲醇
羰基化
杂质金属
铱-碘催化剂
树脂脱除法
acetic acid
methanol
carbonylation
impurity metals
iridium-iodine catalyst
resin removal method
