大连理工大学主页平台管理系统梁长海--中文主页-- A novel approach to synthesize highly selective nickel silicide catalysts for phenylacetylene semihydrogenation

论文成果

A novel approach to synthesize highly selective nickel silicide catalysts for phenylacetylene semihydrogenation

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论文类型：会议论文
发表时间：2010-07-11
收录刊物：EI、CPCI-S、SCIE
文献类型：A
卷号：175
页面范围：77-84
关键字：nickel silicide; carbon template; silicidization; phenylacetylene semihydrogenation
摘要：Nickel silicides (NiSi(x)) have been prepared by carbon template for nanostructured NiO and further silicidization with SiH(4)/H(2) at relatively low temperature and atmospheric pressure. The results showed that the formation of nickel silicides involves the following sequence, Ni (cubic) -> Ni(2)Si (orthorhombic) -> NiSi (orthorhombic) -> NiSi(2) (cubic), with increasing temperatures. The as-prepared nickel silicides showed above 92% selectivity to styrene in the semihydrogenation of phenylacetylene due to the electronic and geometrical effects derived from the addition of Si into Ni particles.

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