摘要
对甲醇氧化羰基化法合成碳酸二甲酯(DMC)的釜式反应过程,进行了原料气的气相连续性工艺研究。实验结果表明,在CO/O2的物质的量比为2∶1,流量分别为200和400 mL/min,反应压力为2.8 MPa,反应温度为95℃,反应时间为6 h条件下,当铜基催化剂浓度为0.25 g/mL时,甲醇转化率为46.8%以上,DMC选择性达到93.1%;当铜基催化剂浓度为0.32 g/mL,甲醇转化率达到54.7%,DMC选择性达到93.1%。
The process for the synthesis of dimethyl carbonate （DMC） at autoclave by oxidative carbonylation of methanol in a agitation reactor was investigated basd on the technology of continuous vapor phase of feed gas. The results showed that the methanol conversion could exceed 46.8% and the DMC selectivity was about 93.1 % under the reaction conditions of 2 molar ratio of CO to O2, the 400 and 200 mL/min flow rates of CO and 02, pressure of 2.8 MPa, temperature of 368 K, reaction time of 6 h, and catalyst concentration of 0.25 g/mL. When the concentration of catalyst was 0.32 g/mL, the methanol conversion could reach 54. 7%. The present investigation may be useful to practical production.
出处
《化学反应工程与工艺》
CAS
CSCD
北大核心
2009年第3期198-202,共5页
Chemical Reaction Engineering and Technology
关键词
碳酸二甲酯
羰基合成
铜基催化剂
气相连续工艺
dimethyl carbonate
oxidative carbonylation
copper-based catalyst
continuous vapor phase process
作者简介
王飞燕（1984-），女，硕士研究生
刘定华（1965-），男，副教授，通讯联系人。E-mail：ncldh@njut.edu.cn
