Pd-Ni/Al₂O₃催化合成四甲基二丙烯三胺研究  

Pd-Ni/Al2O3 Catalyze Synthesis of 3,3’-Iminobis(N,N-dimethylpropylamine)

作　　者：刘威威 姜伟伟 唐维克 冯乙巳 

机构地区：[1]合肥工业大学化学与化工学院,安徽合肥

出　　处：《有机化学研究》2016年第2期40-50,共11页Journal of Organic Chemistry Research

基　　金：中国国家自然基金(Nos.21571047,21371044)的资金援助;高校新世纪优秀人才计划(NCET-11-0627)的支持。

摘　　要：本研究采用浸渍法制作了一系列的以γ-Al2O3为载体的Pd-Ni双金属纳米催化剂(Pd-Ni(x: y)/Al2O3;x和y分别是Pd-Ni的摩尔比),该催化剂用于二甲基丙二胺和二甲氨基丙腈加氢合成四甲基二丙烯三胺。并使用X射线衍射(XRD)、X电子光谱法(XPS)和透射电子显微镜法(TEM)对催化剂进行了表征。催化剂的活性随着Pd-Ni负载量的不同而变化。在所有催化剂中Pd-Ni/γ-Al2O3 (Pd:Ni = 1:2)表现出了最佳的催化活性,转化率在30%~40%,选择性达到90% (120?C, 最初氢气压力2 MPa, 8 h)。Several γ-Al2O3 supported Pd-Ni bimetallic nanocatalysts (Pd-Ni(x:y)/Al2O3;where x and y repre-sent the mass ratio of Pd and Ni, respectively) were prepared by the impregnation method and used for selective hydrogenation of N,N-Dimethyl-1,3-propane diamine and Dimethylaminopropionitrile to 3,3’-iminobis(N,N-dimethylpropylamine). The Pd-Ni/Al2O3 samples were confirmed to have generated Pd-Ni bimetallic nanoparticles by X-ray diffraction (XRD), X-ray photoelectron spec-troscopy (XPS) and transmission electron microscopy (TEM). The catalytic activity was assessed in view of the effects of different mass ratios of Pd and Ni. Among all the samples, the Pd-Ni (1:2)/Al2O3 (PN-1:1) catalyst showed extremely high catalytic ability, which had 30% - 40% conversion rate and 90% selectivity (120?C, 2 MPa initial H2 pressure, 8 h).

关 键 词：二甲基丙二胺 二甲氨基丙腈 四甲基二丙烯三胺 Pd-Ni/γ-Al₂O₃ 

分 类 号：O64[理学—物理化学]