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1、------------------------------------------------------------------------------------------------十二烷基磺酸根插层水滑石负载纳米钯催化的Suzuki偶联反应(英文)2010文章编号:0253-9837(2010)05-0557-05ChineseJournalofCatalysis国际版DOI:10.1016/S1872-2067(09)60072-3Vol.31No.5研究论文:557~561十二烷基磺酸根插层水滑石负载纳米钯催化的Su
2、zuki偶联反应1112刘诗咏１,周其忠,金正能,蒋华江,姜玄珍1台州学院医药化工学院,浙江临海3170002浙江大学化学系,浙江杭州310027插层水滑石负载的纳米钯无膦配体型的Suzuki偶联反应催化剂.DS–进入到水滑石层摘要：首次制备了十二烷基硫酸根(DS–)间,使层间距从微孔增至2.9nm,从而有利于中等尺度的有机分子在催化剂表面的扩散.进一步以PdCl42–交换该水滑石得到DS–和PdCl42–双插层的水滑石.还原后可得到层间插有金属钯纳米团簇的水滑石.由于DS–插层后在水滑石层板间形成的空间有限,限制—————————
3、—————————————————————————————------------------------------------------------------------------------------------------------了Pd0团簇的进一步生长.作为一种亲油性的非均相催化剂,该类催化剂可有效促进卤代芳烃与苯硼酸的Suzuki偶联反应.催化剂循环使用5次后活性基本得以保持.关键词：表面活性剂;水滑石;纳米钯;介孔材料;Suzuki偶联反应;卤代芳烃;苯硼酸中图分类号：O643文献标识码：ADodecyls
4、ulfateAnionEmbeddedLayeredDoubleHydroxideSupportedNanopalladiumCatalystfortheSuzukiReactionLIUShiyong1,*,ZHOUQizhong1,JINZhengneng1,JIANGHuajiang1,JIANGXuanzhen21SchoolofPharmaceuticalandChemicalEngineering,TaizhouUniversity,Linhai317000,Zhejiang,China2DepartmentofChem
5、istry,ZhejiangUniversity,Hangzhou310027,Zhejiang,ChinaAbstract:Thedodecylsulfateanion(DS–)embeddedlayereddoublehydroxide(LDH)supportednanopalladiumcatalyst(LDH-DS-Pd0)isanovelphosphinefreerecyclableheterogeneouscatalyticsystemforpalladiumcatalyzedSuzukicouplingreaction
6、sandhasbeenpreparedforthefirsttime.TheintercalationofDS–changedtheinterlayerspacingofLDHfromamicrosizetoamesosize(2.9nm)range,whichfavorsthediffusionofaveragesizedorganicmolecules.ThePd0clustersobtained——————————————————————————————————————-----------------------------
7、-------------------------------------------------------------------fromthereductionofPdCl42–-interlayeredLDHwereintercalatedbetweentheLDHlayersandhencethegrowthofPd0clusterswaseffectivelyhinderedbythelimitedspacecreatedbytheintercalationofDS–.Thislipophiliccatalystwash
8、ighlyefficientinpromotingtheSuzukireactionofarylhalideswithphenylboronicacid.Asaheterogene-ousnanocatalyst,LDH-DS-Pd0
