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摘要碳酸二甲酯(DMC)是一种对环境友好的绿色化学品,其洁净合成工艺的研究及开发,已引起国内外学者的广泛关注。以CuCl催化剂甲醇液相氧化羰化法合成DMC已实现工业化。由于反应生成了副产物HCl,造成Cl-的流失,不仅造成催化剂失活,同时对反应设备腐蚀严重,污染环境。论文中制备了CuCl和Schiff碱助剂络合均相催化剂,并采用IR对其进行了表征。考察了不同Schiff碱助剂(助剂:CuCl=1:1)对CuCl催化甲醇液相氧化羰化合成DMC催化性能的影响。结果表明:N-甲基咪唑与CuCl络合制备的催化剂催化活性最高。在120℃,反应压力2.4MPa,反应时间4h条件下,甲醇的转化率达到5.8%,DMC的选择性达到99.9%。对于双配体络合CuCl催化体系,能进一步提高催化活性。在120℃,反应压力2.4MPa,反应时间4h,聚乙烯吡咯烷酮:N-甲基咪唑:CuCl=2:1:1(摩尔比),甲醇的转化率达到6.6%。结果同时表明,催化体系的Cl-的流失量降低,催化剂的寿命得到了提高。关键词:氧化羰化甲醇;碳酸二甲酯;铜络合物催化剂AbstractDiethylcarbonate(DMC)isanenvironmentallybenignintermediation.ItwaspaidwidelyattentionthattheresearchanddevelopmentofagreenprocessofsynthesisofDMC.AlthoughtheprocessofproducingDMCbyoxidativecarbonizationofmethanolinthepresenceofCuClcatalystsystemhasbeenindustrial,somedrawbacks,forinstancetheproductionoftheby-productionHCl,inwhichnotonlycausedtoaleakingofCl-subsequencebythedeactivateofthecatalyst,butalsoacorrosiontothereactor,stillneedtobeovercome.Inthiswork,acomplexcatalystwaspreparedfromCuClandSchiffbaseadditivesandcharacterizedbyIR.TheeffectsofdifferentSchiffbaseadditiveswereinvestigated.TheresultsshowedthathighactivitywasexhibitedinthepresenceofcomplexcatalystsynthesizedbyN-methylimidazoleandCuCl,themethanolconversionwas5.8%,DMCselectivityreachedto99.9%at120℃,pressure2.4MPa,thereactiontime4h.Atthesamecondition,catalyticactivitywasfurtherimprovedbytwo-ligandscomplexCuClsystem,methanolconversionis6.56%(PVP:N-methylimidazole:CuCl=2:1:1).TheresultalsoshowedthatlifeoftheCuCl/Schiffbaseadditivecatalystswasprolonged.Keywords:oxidativecarbonizationofmethanol;DMC;Cuprouschloridecomplexcatalys目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc259101122"摘要PAGEREF_Toc259101122\hIHYPERLINK\l"_Toc259101123"AbstractPAGEREF_Toc259101123\hIIHYPERLINK\l