多相催化精馏合成碳酸二甲酯  

Synthesis of Dimethyl Carbonate via Transesterification on Heterogeneous Catalyst in Catalytic Distillation

作　　者：王慧[1] 魏彤[1] 王秀芝[1] 魏伟[1] 孙予罕[1] 

机构地区：[1]山西煤炭化学研究所煤转化国家重点实验室,山西太原030001

出　　处：《石油化工》2003年第12期1017-1020,共4页Petrochemical Technology

摘　　要：利用催化精馏装置,以氧化钙为活性组分的复合型固体碱为催化剂,考察了碳酸丙烯酯(PC)和甲醇酯交换合成碳酸二甲酯(DMC)工艺中催化剂载体和活性组分含量对反应的影响,以及反应温度、回流比和进料空速的影响。结果表明,以酚醛树脂为载体、CaO负载质量分数50%的催化剂适用于催化精馏反应,PC转化率高达97 43%,并得出最佳反应工艺条件:温度337K,回流比6/1,PC进料空速0 3h-1。In a catalytic distillation apparatus,dimethyl carbonate was synthesized from methanol and propylene carbonate(PC) catalyzed by solid base.Catalyst activity of different carriers loaded with calcium oxide were compared.Using bakelite supported calcium oxide as catalyst,PC conversion reached 97.43% at 337 K and LHSV 0.3 h^(-1) with reflux ratio of 6/1.

关 键 词：催化精馏 固体碱催化剂 酯交换 碳酸二甲酯 甲醇 碳酸丙烯酯 

分 类 号：TQ225.51[化学工程—有机化工]