物理化学学报 >> 2000, Vol. 16 >> Issue (02): 180-183.doi: 10.3866/PKU.WHXB20000216

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负载型Ni-B非晶态合金催化剂的表征

张晓昕, 马爱增, 慕旭宏, 闵恩泽, 黄晓茜, 王蓉   

  1. 石油化工科学研究院，北京 100083;北京科技大学，北京 100083
  • 收稿日期:1999-03-29 修回日期:1999-06-24 发布日期:2000-02-15
  • 通讯作者: 张晓昕

Structure Characterization of the Supported Amorphous Ni-B/SiO2 Catalysts

Zhang Xiao-Xin, Ma Ai-Zeng, Mu Xu-Hong, Min En-Ze, Huang Xiao-Xi, Wang Rong   

  1. Research Institute of Petroleum Processing,Beijing 100083;University of Science Technology Beijing,Beijing 100083
  • Received:1999-03-29 Revised:1999-06-24 Published:2000-02-15
  • Contact: Zhang Xiao-Xin

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关键词: Ni-B/SiO2非晶态催化剂, 晶化, 结构表征

Abstract:

Amorphous Ni-B/SiO2 catalysts were prepared by chemical reduction of Ni2＋with KBH4. ICP was used to analyze the composition of alloys. XRD,TEM,SAED and HREM were used to examine the structures of samples fresh and after thermal treatment in different atmospheres. The results indicated that the supported NiB has a higher structural stability than ultrafine NiB amorphous alloy. Low temperature pretreatment in hydrogen can reduce nickel oxide on the surface of catalysts. However, treatment in hydrogen is more favorable than in atmosphere and nitrogen for keeping it in stable state.

Key words: Ni-B amorphous catalyst, Crystallization, Structure characterization