不同形貌纳米镍的制备及其对Suzuki-Miyaura反应催化性能的影响  

Effect of the Nano Nickel Shapes on the Catalytic Activity for Suzuki-Miyaura Coupling Reaction

作　　者：张艳花[1] 刘向云[1] 田大民[1] 

机构地区：[1]河南城建学院化学与化学工程系,河南平顶山467044

出　　处：《河南大学学报（自然科学版）》2011年第2期158-161,共4页Journal of Henan University:Natural Science

基　　金：河南省科技厅科技攻关项目(072102230035)

摘　　要：采用液相化学还原法,使用Ni(CH3COO2).4H2O作为前驱体,以N2H4.H2O或者NaBH4为还原剂,聚乙烯吡咯烷酮(PVP)或者十二烷基磺酸钠(SDS)为修饰剂,乙二醇为溶剂,在加热条件下,可得到链状、花状和球状形貌的纳米镍.所制得的纳米镍微粒对Suzuki-Miyaura偶联反应表现出很高的催化活性,通过对不同形貌纳米镍催化性能的研究,进一步证明纳米催化剂的催化性能与其形貌密切相关.纳米镍形貌与结构通过Transmission electron microscopy(TEM),X-ray powder diffraction(XRD)等手段进行了表征,Suzuki-Miyaura偶联反应的产物通过1 HNMR,13 CNMR,MS进行了表征.Nano nickel with different shapes were synthesized starting from Nickel（II） acetate tetrahydrate and using sodium borohydride or hydrazine hydrate as reductants in the presence of PVP or SDS as modifiers,the organic solvent is ethylene glycol.The catalytic activity was colsely related to the shapes of nano nickel for the Suzuki-Miyaura coupling reaction.The shapes were characterized by transmission of electron microscopy and X-ray diffraction.The products were determined by 1HNMR,13CNMR and MS.

关 键 词：纳米镍 液相化学还原法 SUZUKI-MIYAURA 

分 类 号：O627[理学—有机化学]