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.
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
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)
关键词
碳酸二甲酯
甲醇
氧化羰基化
催化剂
失活
液相
气相
dimethyl carbonate
methanol
oxidative carbonylation
catalyst
deactivation
liquid-phase
vapor-phase
