THE INTERACTION OF HYDROGEN AND CARBON-MONOXIDE WITH OXYGEN ON CU(111)-FE SURFACES

被引：15

作者：

VANPRUISSEN, OP

DINGS, MMM

BOELLAARD, E

GIJZEMAN, OLJ

GEUS, JW

机构：

[1] Univ of Utrecht, Utrecht, Neth, Univ of Utrecht, Utrecht, Neth

来源：

APPLIED SURFACE SCIENCE | 1986年 / 27卷 / 01期

关键词：

CHEMICAL REACTIONS - Reduction - CRYSTALS - Atomic Structure - SPECTROSCOPY; AUGER ELECTRON - SURFACES - Spectroscopic Analysis;

D O I：

10.1016/0169-4332(86)90093-0

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：

The interaction of hydrogen and carbon monoxide with oxygen adsorbed on Cu(111)-Fe surfaces containing different amounts of iron has been studied with ellipsometry, Auger electron spectroscopy and low energy electron diffraction. With carbon monoxide copper can be reduced completely and if, at larger iron deposits, gamma -Fe//2O//3 is present, gamma -Fe//2O//3 can be reduced to Fe//3O//4. The maximum reaction rate is proportional to the square of the total copper surface. With hydrogen all oxygen can be removed. The reduction proceeds via a number of different stages. This is explained by the subsequent occurrence of gamma -Fe//2O//3, Fe//3O//4 Fe//0//. //9//5O and Fe.

引用

页码：24 / 51

页数：28

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