摘要
The metallic states of ultrafine amorphous alloy particles CoB, CoPB and Co metal were studied by using JCP, 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 ethylenc hydrogenation is lower than that of metallic Co.
The metallic states of ultrafine amorphous alloy particles CoB, CoPB and Co metal were studied by using JCP, 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 ethylenc hydrogenation is lower than that of metallic Co.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1996年第10期954-956,共3页
Acta Physico-Chimica Sinica
基金
国家自然科学基金
催化基础国家重点实验室资助
关键词
超细微粒
非晶粒
钴系合金
乙烯
加氢
催化剂
Ultrafine particles, Amorphous state, Co-based alloy, Ethylene hydrogenation
