季铵盐和叔胺协同催化一步酯交换法合成碳酸二甲酯的研究  

Synergistic catalytic performance of quaternary ammonium salt and tertiary amine for synthesis of dimethyl carbonate by one-step transesterification

作　　者：侯杰[1] 赵亮[2] 陈勇[3] 李雷[1,2] 丁力浩[1] 王亮[1] 洪杰[1] 汪海东[1,2] 

机构地区：[1]常州大学石油化工学院,江苏常州213164 [2]嘉兴学院生物与化学工程学院,浙江嘉兴314001 [3]后勤工程学院国防建筑规划与环境工程系,重庆401311

出　　处：《化学研究与应用》2014年第7期1130-1135,共6页Chemical Research and Application

基　　金：浙江省公益性技术应用研究计划项目(2014C31140)资助;浙江省自然科学基金项目(LQ12E02007;LQ12B01002)资助;浙江省大学生科技创新活动计划(新苗人才计划)项目(2013R417001)资助

摘　　要：以不同季铵盐和叔胺为催化剂,考察了它们各自和协同催化甲醇、CO2和环氧丙烷(PO)或环氧氯丙烷(ECH)一步法合成碳酸二甲酯(DMC)的催化性能。结果表明,季铵盐对一步法合成DMC中第一步反应(即CO2和PO环加成反应生成环状碳酸酯)的催化性能较好,而叔胺对一步法合成DMC中第二步反应(即环状碳酸酯与甲醇反应生成DMC)的催化效果较好。其中,以双十六烷基二甲基溴化铵(DHDMAB)和N,N-二烯丙基甲基胺(MDAA)分别为季铵盐和叔胺的协同催化性能最佳,其DMC产率达35.2%。此外,以PO为环氧化合物的DMC产率远高于ECH。Quaternary ammonium salt and tertiary amine were used as catalysts, and their respective and synergistic catalytic per- formance for synthesis of dimethyl carbonate by one-step transesterification from CO2, methanol and propylene oxide （PO）or epi- chlorohydrin（ ECH）were investigated in detail. The results indicated that quaternary ammonium salt presented a good catalytic per- formance for the first reaction of DMC synthesis（ i. e. ,CO2 reacted with PO to form cyclic carbonate） ,while tertiary amine presen- ted a good catalytic performance for the second reaction of DMC synthesis （ i. e. , methanol reacted with cyclic carbonate to form DMC）. Thereinto, the catalytic performance of dihexadecyldimethylammonium bromide （ DHDMAB ） and methyldiallylamine （DMAA） ,used as quaternary ammonium salt and tertiary amine,respectively,presented the best synergistic effect,and the yield of DMC reached 35.2%. Moreover, DMC yields of PO used as epoxide were higher than those of ECH used as epoxide.

关 键 词：碳酸二甲酯 二氧化碳 季铵盐 叔胺 协同催化 

分 类 号：O643.32[理学—物理化学]