连续流动状态下纳米碳管负载镍催化剂催化苯乙炔选择加氢反应  

Research on carbon nanotubes supported nickel catalysts for phenylacetylene selective hydrogenation reaction under continuous flow conditions

作　　者：王升华[1] 罗博文[1] 于威振 周志元 马怡然[1] 邵立冬[1] 辛志玲[1] 

机构地区：[1]上海电力学院环境与化学工程学院,上海200090

出　　处：《化工进展》2016年第10期3201-3206,共6页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金项目(21403137)

摘　　要：采用浸渍法,以纳米碳管(CNT)为载体,制备了Ni负载量为3.91%(质量分数)的Ni/CNTs催化剂。利用X射线衍射(XRD)、拉曼光谱、电感耦合等离子体发射光谱(ICP-OES)以及透射电镜(TEM)等技术对Ni/CNTs催化剂进行了表征。在连续流动状态下通过一系列实验考察了温度、压力、氢气量以及流速对Ni/CNTs催化苯乙炔选择加氢性能的影响,利用高效液相色谱仪HPLC对产品进行定性和定量分析。实验结果表明,催化剂Ni/CNTs对苯乙炔选择加氢反应具有一定的催化活性;反应的最佳温度为20℃;压力对产品收率影响显著,微正压对反应有利;最佳氢气量为24m L/min;产品收率随着反应液流速的增加而增大。The 3.91% Ni loaded Ni/CNTs catalyst was prepared with the support of carbon nanotubes by impregnation method. The catalyst was characterized using X-ray diffraction（XRD）,Raman spectra,inductively coupled plasma optical emission spectrometry（ICP-OES）and TEM. The effects of temperature,pressure,hydrogen quantity and flow velocity on the Ni/CNTs catalyst for the phenylacetylene selective hydrogenation were studied under continuous flow conditions. The products were analyzed qualitatively and quantitatively by high performance liquid chromatograph（HPLC）. The results verified the catalytic activity of Ni/CNTs catalyst. The optimum reaction temperature was 20℃,and the optimal hydrogen flow was 24 m L/min,while the yield of product styrene increased with flow velocity but decreased with pressure.

关 键 词：Ni/CNTs催化剂 连续流动 苯乙炔 选择加氢 

分 类 号：O63[理学—高分子化学]