物理化学学报 >> 1996, Vol. 12 >> Issue (10): 954-956.doi: 10.3866/PKU.WHXB19961021

研究简报 上一篇    下一篇

钴系非晶合金超细微粒金属微观状态的研究

姚凯文,范以宁,匡文兴,陈懿   

  1. 南京大学化学系,南京 210093
  • 收稿日期:1996-04-15 修回日期:1996-06-28 发布日期:1996-10-15
  • 通讯作者: 匡文兴

Study on Metallic States of Co-based Ultrafine Amorphous Alloy Particles

Yao Kai-Wen,Fan Yi-Ning,Kuang Wen-Xing,Chen Yi   

  1. Department of Chemistry,Nanjing University,Nanjing 210093
  • Received:1996-04-15 Revised:1996-06-28 Published:1996-10-15
  • Contact: Kuang Wen-Xing

关键词: 超细微粒, 非晶态, 钴系合金, 乙烯加氢

Abstract:

The metallic states of ultrafine amorphous alloy particles CoB, CoPB and Co metal were studied by using ICP, XPS and ethylene hydrogenation reaction test. It is shown that Co component on surface of CoB and CoPB amorphous alloy particles is in electron-deficient state, which leads to the increase of irreversible absorption of ethylene, and results in the decrease of the active site number. Hence the catalytic activity of CoB and CoPB catalysts for ethylene hydrogenation is lower than that of metallic Co.

Key words: Ultrafine particles, Amorphous state, Co-based alloy, Ethylene hydrogenation