| 三苯基膦稳定的负载钌纳米粒子上对氯硝基苯的选择加氢反应 |
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| 引用本文： | 王芳,刘俊华,徐贤伦.三苯基膦稳定的负载钌纳米粒子上对氯硝基苯的选择加氢反应[J].工业催化,2009,17(7):49-52. |
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| 作者姓名： | 王芳 刘俊华 徐贤伦 |
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| 作者单位： | （1.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；;2.中国科学院研究生院，北京100049； 3.南京师范大学化学与环境科学学院，江苏 南京 210097） |
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| 摘 要： | 制备了γ-Al2O3负载的三苯基膦稳定的钌纳米粒子（PPh3-Ru/Al2O3）催化剂，并进行了XRD 和XPS表征。将其用于对氯硝基苯的选择加氢反应，考察了反应压力、温度和时间对催化性能的影响。结果表明，在60 ℃、氢压2 MPa、反应21 h和对氯硝基苯几乎完全转化的条件下，实现了产品对氯苯胺99.7%的选择性。分析表明，脱氯反应的抑制是取得产品高选择性的主要原因，阐明了该催化剂如何有效抑制脱氯反应的发生。
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| 关 键 词： | 催化化学 选择加氢 对氯硝基苯 对氯苯胺 钌纳米粒子 |
Supported triphenylphosphine-stabilized ruthenium nanoparticles for p-chloronitrobenzene selective hydrogenation to p-chloroaniline |
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| WANG Fang,LIU Junhua,XU Xianlun.Supported triphenylphosphine-stabilized ruthenium nanoparticles for p-chloronitrobenzene selective hydrogenation to p-chloroaniline[J].Industrial Catalysis,2009,17(7):49-52. |
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| Authors: | WANG Fang LIU Junhua XU Xianlun |
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| Affiliation: | (1.State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China; 2.Graduate School, Chinese Academy of Sciences, Beijing 100049, China; 3.School of Chemistry and Environmental Science, Nanjing Normal University, Nanjing 210097, Jiangsu, China) |
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| Abstract: | γ-Al2O3 supported triphenylphosphine-stabilized ruthenium nanoparticle catalyst was prepared and characterized by XRD and XPS. The effect of hydrogen pressure, temperature and reaction time on the hydrogenation of p-chloronitrobenzene over PPh3-Ru/γ-Al2O3 catalyst was investigated. Under the reaction condition of 60℃, hydrogen pressure 2.0 MPa, reaction for 21 h, and p-chloronitrobenzene conversion of 100%, selectivity to p-chloroaniline of 99.7% was obtained. The suppression of dehaloge-nation reaction was responsible for high selectivity to p-chloroaniline. The reason for the suppression of dehalogenation reaction over PPh3-Ru/Al2O3 catalyst was also clarified. |
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| Keywords: | catalytic chemistry selective hydrogenation p-chloronitrobenzene p-chloroaniline ruthe-nium nanoparticles |
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