材料科学
扩展X射线吸收精细结构
催化作用
无定形固体
化学工程
非晶态金属
双金属片
纳米晶材料
氧烷
分析化学(期刊)
X射线吸收精细结构
作者
Bairong Shen,S. Wei,K. Fang,J.-F. Deng
标识
DOI:10.1007/s003390050582
摘要
A series of Ni-Co-B amorphous catalysts for hydrogenation of benzene have been prepared in a wide composition range by chemical reduction and their structure were studied by EXAFS. It is shown that the catalytic activity of these Ni-Co-B amorphous alloy is affected by both nickel content and the structural disorder of the sample; the latter could be adjusted by cobalt content of the sample. The EXAFS study also showed that the change of the boron content of the sample has a stronger effect on Ni-B coordination than on Co-B coordination and there is a preferential coordination of boron with nickel when the composition ratio B/Ni is high.
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