甲醇氧化羰基化合成DMC催化剂及其失活研究进展  

Advances in catalysts and their deactivation for oxidative carbonylation of methanol to dimethyl carbonate

作　　者：杨凯[1] 郑华艳[1] 李忠[1] 

机构地区：[1]太原理工大学煤化工研究所煤科学与技术教育部和山西省重点实验室,山西太原030024

出　　处：《天然气化工—C1化学与化工》2014年第3期75-80,共6页Natural Gas Chemical Industry

基　　金：国家自然科学基金(No.21276169);山西省科技攻关项目(No.20120321003-03)

摘　　要：针对甲醇液相和气相氧化羰基化合成碳酸二甲酯(DMC)两种生产工艺,分别综述了两种工艺所采用的多相铜系催化剂,包括CuCl/CuCl2负载型催化剂、固体离子交换型低氯和完全无氯铜基负载型催化剂,并分析总结了催化剂分别在液相和气相反应中的失活原因,得出副产物水不能及时移出是液相合成DMC催化剂失活的主要原因,而氯离子的流失和催化剂的热烧结及积炭则会造成气相合成DMC催化剂的失活。Heterogeneous copper catalysts used for liquid-phase and vapor-phase oxidative carbonylation of methanol to dimethyl carbonate were reviewed, including supported CuCl/CuCl2 catalysts, low-chlorine copper catalysts prepared by solid-state ion exchange and chlorine-free copper catalysts. Furthermore, the deactivation reasons of these catalysts in liquid-phase and vapor-phase reactions were analyzed and summarized. The deactivation of catalysts was mainly due to the by-product water not being removed timely in liquid-phase reaction, and due to the loss of chlorine ion, sintering and carbon deposition in vapor-phase reaction.

关 键 词：碳酸二甲酯 甲醇 氧化羰基化 催化剂 失活 液相 气相 

分 类 号：O643[理学—物理化学] TQ426[理学—化学]