Preparation of ultrafine Pd/γ-Al2O3 catalyst by KBH4 reduction and its application to anthraquinone hydrogenation

被引：0
|
作者：
Wang, H [1 ]
Li, W [1 ]
Zhang, MH [1 ]
Tao, KY [1 ]
机构：
[1] Nankai Univ, Coll Chem, Inst New Catalyt Mat Sci, Tianjin 300071, Peoples R China
来源：
CHINESE JOURNAL OF CATALYSIS | 2005年 / 26卷 / 10期
关键词：
palladium; alumina; potassium borohydride; anthraquinone; hydrogenation;
D O I：
暂无
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The ultrafine Pd/gamma-Al2O3 catalyst was prepared by impregnation of alumina support with PdCl2 solution followed by KBH4 reduction. The microstructure of Pd/gamma-Al2O3 was investigated by X-ray diffraction, high resolution electron microscopy, energy dispersive spectroscopy and electron energy loss spectroscopy. The results show that the Pd species exists as Pd nanocrystals in the as-prepared catalyst, and no Pd-B amorphous alloy was found. Compared with the PdO/gamma-Al2O3 catalyst prepared by impregnation and calcination, the ultrafine Pd/gamma-Al2O3 exhibits higher activity in the hydrogenation of 2-ethylanthraquinone. This can be attributed to the unique properties of the ultrafine Pd/gamma-Al2O3, such as smaller Pd crystals and the higher dispersion of Pd on the support.
引用
收藏
页码：855 / 858
页数：4
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