Structure and reactivity of bimetallic Co sub n V sub m clusters
Structure and reactivity of bimetallic Co sub n V sub m clusters
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DOI：
10.1021/j100370a006
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发表时间：
1990-04
期刊：
影响因子：
--
通讯作者：
S. Nonose;Yasuto Sone;K. Onodera;Sho Sudo;K. Kaya
中科院分区：
文献类型：
--
作者：
S. Nonose;Yasuto Sone;K. Onodera;Sho Sudo;K. Kaya
通过激光蒸发法合成了由钒（V）和钴（Co）组成的双金属团簇。利用快速流动反应器，并与纯的钴团簇$Co_{n}$进行比较，确定了这些合金团簇对$H_{2}$的反应活性。研究发现，$Co_{12}V$团簇对$H_{2}$的吸附极其稳定，而$Co_{13}$对$H_{2}$表现出显著的反应活性。这一结果可以根据$Co_{12}V$的稳定结构来解释，在该结构中，V原子位于中心，与表面的12个Co原子相互作用。
Bimetallic clusters composed of V and Co were synthesized by a laser vaporization method. The reactivity of these alloy clusters toward H{sub 2} was determined by use of a fast-flow reactor in comparison with pure clusters Co{sub n}. It was found that the Co{sub 12}V cluster is extraordinarily stable against H{sub 2} adsorption whereas Co{sub 13} exhibits substantial reactivity toward H{sub 2}. This result was explained in terms of the stable structure of Co{sub 12}V where the V atom is located at the center interacting with 12 Co atoms on the surface.