Dissociative sticking of CH4 on Ru(0001)

被引：44

作者：

Larsen, JH ^{[1
]}

Holmblad, PM

Chorkendorff, I

机构：

[1] Tech Univ Denmark, Ctr Atom Scale Mat Phys, DK-2800 Lyngby, Denmark

[2] Tech Univ Denmark, Dept Phys, DK-2800 Lyngby, Denmark

来源：

JOURNAL OF CHEMICAL PHYSICS | 1999年 / 110卷 / 05期

关键词：

D O I：

10.1063/1.477985

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study the CH4 dissociation probability on Ru(0001) is found for various translational and vibrational energies. The absolute sticking values are determined from King and Wells experiments and carbon uptake curves. The carbon amount is determined from the recombination signal of carbon with oxygen obtained after the beam exposure when heating in an oxygen atmosphere. The measured sticking coefficient of CH4 is strongly enhanced both by increasing the translational and the vibrational energy of the CH4 molecule. A model is applied to the data and an estimate of the thermal activation energy for CH4 dissociation is found to be in good agreement with previous bulb experiments. (C) 1999 American Institute of Physics. [S0021-9606(99)71405-4].

引用

页码：2637 / 2642

页数：6

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