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化学学报
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化学学报 ›› 2007, Vol. 65 ›› Issue (9): 793-797. 上一篇    下一篇

研究论文

载体TiO2对Co-P非晶态合金性质的影响

韩长秀*, 林徐明, 张宝贵   

  1. (南开大学环境科学与工程学院 天津 300071)
  • 投稿日期:2006-11-09 修回日期:2007-01-04 发布日期:2007-05-14
  • 通讯作者: 韩长秀

Effect of Support TiO2 on the Characteristics of Co-P Amorphous Alloy

HAN Chang-Xiu*; LIN Xu-Ming; ZHANG Bao-Gui   

  1. (College of Environmental Science & Engineering, Nankai University, Tianjin 300071)
  • Received:2006-11-09 Revised:2007-01-04 Published:2007-05-14
  • Contact: HAN Chang-Xiu

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用还原沉积法分别合成了纯态Co-P非晶态合金和一种新型负载非晶态合金催化剂CoP/TiO2, 用XRD, ICP, TEM, BET和DSC等手段对催化剂的物理性质进行了表征, 比较了它们的结构、组成、形貌、表面积及热稳定性等物理性质及其对PH3分解的催化活性. 与纯态Co-P非晶态合金比较, CoP/TiO2具有更大的表面积和较高的热稳定性及催化活性, 这缘于TiO2载体与催化剂的相互作用以及载体对Co-P良好的分散性能.

关键词: 非晶态合金, 钴磷合金, TiO2, 负载型催化剂

Co-P amorphous alloy and a new supported Co-P amorphous alloy catalyst CoP/TiO2 were prepared respectively by reduction-chemical deposition method. The physical properties of the alloy catalysts were characterized by XRD, ICP, TEM, BET and DSC. The structure, composition, shape, surface area and thermal stabilities of Co-P and CoP/TiO2 were compared. Besides, their catalytic activities for PH3 decomposition were compared, too. Compared with Co-P particles, CoP/TiO2 has bigger surface area, higher thermal stability and catalytic activity, which was attributed to interaction of TiO2 support and catalyst and high dispersion of Co-P alloy particles on the support of TiO2.

Key words: amorphous alloy, Co-P alloy, titania, supported catalyst