催化学报 ›› 2014, Vol. 35 ›› Issue (11): 1793-1799.DOI: 10.1016/S1872-2067(14)60203-5

• 快讯 • 上一篇    下一篇

PVP-NiB非晶态催化剂的制备和催化苯酚及其衍生物加氢反应性能

张勤生a, 李海峰a, 高平b, 王来来a   

  1. a 中国科学院兰州化学物理研究所, 羰基合成与选择氧化国家重点实验室, 甘肃兰州730000;
    b 中国科学院兰州化学物理研究所, 固体润滑国家重点实验室, 甘肃兰州730000
  • 收稿日期:2014-06-25 修回日期:2014-07-24 出版日期:2014-11-06 发布日期:2014-11-06
  • 通讯作者: 高平,王来来
  • 基金资助:

    国家自然科学基金(21174115);甘肃省青年基金(1308RJYA036).

PVP-NiB amorphous catalyst for selective hydrogenation of phenol and its derivatives

Qinsheng Zhanga, Haifeng Lia, Ping Gaob, Lailai Wanga   

  1. a State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China;
    b State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China
  • Received:2014-06-25 Revised:2014-07-24 Online:2014-11-06 Published:2014-11-06
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21174115) and the Youth Foundation of Gansu Province (1308RJYA036).

摘要:

以聚乙烯吡咯烷酮(PVP)为稳定剂, 采用化学还原法制备了PVP-NiB非晶态催化剂, 通过红外光谱、X射线衍射、透射电子显微镜和电感耦合等离子体光谱对催化剂进行了表征. 结果表明, PVP不仅能够提高NiB纳米颗粒的分散度, 而且对其起到稳定作用; 将该催化剂首次应用于苯酚及其衍生物的催化加氢反应, 在水相体系中, 30 ℃及氢气压力0.2 MPa时, 苯酚的转化率和环己醇的选择性都能够达到99.9%; 酚类衍生物加氢反应结果发现, 该催化剂有利于环己醇类物质的生成, 初步考察了PVP-NiB非晶态催化剂的构效关系.

关键词: 镍, 苯酚, 催化加氢, 非晶态催化剂

Abstract:

PVP-NiB amorphous catalysts were prepared by the chemical reduction of nickel chloride with sodium borohydride, and characterized by infrared, X-ray diffraction, transmission election microscopy, and inductively coupled plasma. The relationship between the catalytic activity and nature of the active sites was discussed. PVP is a protective agent for preparing PVP-stabilized NiB catalysts, which improved the dispersion of the catalyst and stabilized its amorphous structure. The catalysis of phenol and its derivatives was evaluated in the aqueous phase. 99.9% conversion of phenol and 99.9% selectivity to cyclohexanol were obtained at 30 ℃ and 0.2 MPa H2 after 18 h over PVP-NiB. The generality of the PVP-NiB catalyst for this reaction was demonstrated by the selective hydrogenation of other phenol derivatives, which showed that the PVP-NiB catalyst was selective for the formation of cyclohexanol.

Key words: Nickel, Phenol, Catalytic hydrogenation, Amorphous catalyst