Au/FeOx催化3-硝基苯乙烯加氢反应

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。

Hydrogenation of 3-Nitrostyrene over Au/FeOx Catalysts

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.