催化学报 ›› 2015, Vol. 36 ›› Issue (2): 160-167.DOI: 10.1016/S1872-2067(14)60254-0

• 论文 • 上一篇    下一篇

负载型Au-Ni合金催化剂应用于芳香硝基化合物选择加氢反应

魏海生a,b, 卫星a, 杨小峰a, 银光照c, 王爱琴a, 刘晓艳a, 黄延强a, 张涛a   

  1. a 中国科学院大连化学物理研究所, 辽宁大连116023;
    b 中国科学院大学, 北京100049;
    c 大连理工大学化工学院, 辽宁大连116024
  • 收稿日期:2014-09-27 修回日期:2014-11-03 出版日期:2015-01-21 发布日期:2015-01-21
  • 通讯作者: 王爱琴, 张涛
  • 基金资助:

    国家自然科学基金(21176235, 21203182, 21202163, 21303194, 21373206); 中国科学院大连化学物理研究所百人计划基金.

Supported Au-Ni nano-alloy catalysts for the chemoselective hydrogenation of nitroarenes

Haisheng Weia,b, Xing Weia, Xiaofeng Yanga, Guangzhao Yinc, Aiqin Wanga, Xiaoyan Liua, Yanqiang Huanga, Tao Zhanga   

  1. a State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China;
    b University of Chinese Academy of Sciences, Beijing 100049, China;
    c School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
  • Received:2014-09-27 Revised:2014-11-03 Online:2015-01-21 Published:2015-01-21
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21176235, 21203182, 21202163, 21303194, and 21373206) and the Hundred Talents Program of Dalian Institute of Chemical Physics, Chinese Academy of Sciences.

摘要:

采用改进的两步还原法制备了SiO2负载的Au-Ni合金催化剂, 催化剂中Au-Ni纳米颗粒高度分散于SiO2载体表面. Au-Ni合金催化剂在温和条件下芳香硝基化合物选择加氢反应中表现出比两种单金属催化剂更高的活性和选择性, 体现出Au-Ni之间明显的协同作用. 其中AuNi3/SiO2催化剂具有最好的性能, 反应70 min, 转化率和选择性分别达到90.8%和93.0%.

关键词: 金-镍, 合金, 选择加氢, 芳香硝基化合物

Abstract:

A modified two-step approach was developed for the synthesis of uniform and highly dispersed Au-Ni alloy nanoparticles on a silica support. The supported Au-Ni alloy nanoparticles were investigated for the chemoselective hydrogenation of substituted nitroarenes, which showed a strong synergistic effect between Au and Ni. The best catalyst was AuNi3/SiO2 that afforded a selectivity to 3-vinylaniline of 93.0% at a 3-nitrostyrene conversion of 90.8% after 70 min under mild conditions.

Key words: Gold-nickel, Alloy, Chemoselective hydrogenation, Nitroarenes