CAJ | 학술논문

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。
이불동계안염화숙알위최화제,고찰료타문각자화협동최화갑순、CO2화배양병완( PO)혹배양록병완( ECH)일보법합성탄산이갑지( DMC)적최화성능。결과표명,계안염대일보법합성DMC중제일보반응(즉CO2화PO배가성반응생성배상탄산지)적최화성능교호,이숙알대일보법합성DMC중제이보반응(즉배상탄산지여갑순반응생성DMC)적최화효과교호。기중,이쌍십륙완기이갑기추화안( DHDMAB)화N,N-이희병기갑기알( MDAA)분별위계안염화숙알적협동최화성능최가,기DMC산솔체35．2%。차외,이PO위배양화합물적DMC산솔원고우ECH。
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.