Co and O-2 reactivity of tungsten clusters

被引：8

作者：

Holmgren, L ^{[1
]}

Andersson, M ^{[1
]}

Persson, JL ^{[1
]}

Rosen, A ^{[1
]}

机构：

[1] UNIV GOTHENBURG, S-41296 GOTHENBURG, SWEDEN

来源：

NANOSTRUCTURED MATERIALS | 1995年 / 6卷 / 5-8期

关键词：

D O I：

10.1016/0965-9773(95)00233-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The reactivity of tungsten clusters, W-n, towards CO and O-2 has been studied and absolute sticking probabilities (S) of the first molecule of CO and O-2 were determined for clusters containing 8-40 atoms. The sticking probability of O-2 shows a rather smooth dependence on cluster size. For W-8 S is low, similar to 0.2, but increases to similar to 0.6 for W-9. For larger cluster sizes S increases slowly with n and levels off at an almost constant value of similar to 0.8 for clusters larger than n approximate to 15. The sticking probability of CO is overall somewhat lower than that of O-2, 0.6-0.8 for the larger clusters, and differs less between the smallest and the largest cluster sizes. For CO also the sticking probability of the second molecule was determined and for all cluster sizes found to be lower than S of the first molecule.

引用

页码：1009 / 1012

页数：4

共 9 条

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[2]

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[3]

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