INTERACTION OF CARBON-DIOXIDE WITH POTASSIUM-PROMOTED FE(110) .2. TEMPERATURE-DEPENDENT REACTIONS

被引：16

作者：

MEYER, G ^{[1
]}

BORGMANN, D ^{[1
]}

WEDLER, G ^{[1
]}

机构：

[1] UNIV ERLANGEN NURNBERG,INST PHYS & THEORET CHEM,D-91058 ERLANGEN,GERMANY

来源：

SURFACE SCIENCE | 1994年 / 320卷 / 1-2期

关键词：

D O I：

10.1016/0039-6028(94)00501-X

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 temperature-dependent reactions of carbon dioxide and potassium coadsorbed on Fe(110) have been studied between 85 and 700 K by means of UV photoelectron spectroscopy (WS) and X-ray photoelectron spectroscopy (XPS). Since five different species are formed at 85 K (O-ox, CO, CO3n-, CO2 and a further species, probably of the composition C2O4m-), the thermal behaviour of the system is rather complex. However, quantification of the O 1s spectra by applying Gaussian fits allows a rather detailed description of the reaction paths. There are two ranges of potassium coverage, which exhibit big differences concerning the thermal stability of the carbonate species: small and medium coverages (up to 60% of a monolayer) and high coverages (exceeding 80% of a monolayer). They are separated by a narrow transition range.

引用

页码：123 / 133

页数：11

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