中华医学超声杂志

应用化学 ›› 2011, Vol. 28 ›› Issue (02): 199-202.DOI: 10.3724/SP.J.1095.2011.00322

• 研究论文 • 上一篇    下一篇

Au/FeOx催化3-硝基苯乙烯加氢反应

郝裕芬1,2,林伟伟1,2,赵凤玉1*   

  1. (1.中国科学院长春应用化学研究所,电分析化学国家重点实验室，绿色化学与过程实验室 长春 130022；
    2.中国科学院研究生院 北京)
  • 收稿日期:2010-05-31 修回日期:2010-06-23 出版日期:2011-02-10 发布日期:2011-02-10
  • 通讯作者: 赵凤玉，研究员; E-mail:zhaofy@ciac.jl.cn; 研究方向：物理化学，绿色合成与催化
  • 基金资助:
    国家自然科学基金资助项目（NSFC20873139）

Hydrogenation of 3-nitrostyrene over Au/FeOx catalysts

HAO Yu-Fen1,2, LIN Wei-Wei1,2, ZHAO Feng-Yu1*   

  1. (1.State Key Laboratory of Electroanalytical Chemistry, Laboratory of Green
    Chemistry and Process,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022;
    2.Graudate School of Chinese Academy of Sciences,Beijing)
  • Received:2010-05-31 Revised:2010-06-23 Published:2011-02-10 Online:2011-02-10

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摘要：

采用沉积-沉降法制备了负载型Au/γ-Fe2O3、Au/α-Fe2O3和Au/Fe3-O4催化剂，并利用X射线粉末衍射技术对催化剂进行了表征。 在不同反应介质（水、乙醇和无溶剂）中，研究了Au/FeOx催化剂催化3-硝基苯乙烯加氢反应，考察了反应温度以及载体对催化剂活性的影响。 实验结果表明，在介质水中3-硝基苯乙烯的转化率要远高于乙醇中或无溶剂条件下的转化率,且随温度的升高而增大，而其加氢产物3-氨基苯乙烯的选择性无显著变化。 不同氧化铁载体负载的Au催化剂在水中的活性顺序为Au/γ-Fe2O3＞Au/α-Fe2O3＞Au/Fe3O4，其活性的差异被认为来自于不同氧化铁载体与Au之间的相互作用。

关键词: 金催化剂, 硝基苯乙烯, 加氢, 氧化铁, 水

Abstract:

Au/γ-Fe2O3, Au/α-Fe2O3 and Au/Fe3O4 catalysts were prepared via depositionprecipitation methods and characterized by X-ray diffraction. The catalytic performance of these catalysts was studied and compared for the hydrogenation of 3-nitrostyrene. In addition, the influences of temperature, support as well as the reaction medium were discussed. The results showed that the conversion of 3-nitrostyrene in H2O is much higher than that in ethanol and solvent-free system， and it increased with increasing of temperature, however, the selectivity to 3-aminostyrene did not change. The catalytic activity of Au/FeOx catalysts was in an order of Au/γ-Fe2O3＞Au/α-Fe2O3＞Au/Fe3O4. The different reducibility of the iron oxide supports may be the main reason for such a catalytic activity.

Key words: Gold catalyst, Nitrostyrene, hydrogenation, Iron oxide, water

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