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Citation: Yao Kai-Wen, Fan Yi-Ning, Kuang Wen-Xing, Chen Yi. Study on Metallic States of Co-based Ultrafine Amorphous Alloy Particles[J]. Acta Physico-Chimica Sinica, ;1996, 12(10): 954-956. doi: 10.3866/PKU.WHXB19961021 shu

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

1.
Department of Chemistry,Nanjing University,Nanjing 210093

Received Date: 15 April 1996
Available Online: 15 October 1996

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.
- Ultrafine particles,
- Amorphous state,
- Co-based alloy,
- Ethylene hydrogenation
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