Adsorption and reaction of formic acid on the Mo(110) and O/Mo(110) surfaces

被引：25
|
作者：
Xu, C [1 ]
Goodman, DW [1 ]
机构：
[1] TEXAS A&M UNIV,DEPT CHEM,COLLEGE STN,TX 77843
来源：
JOURNAL OF PHYSICAL CHEMISTRY | 1996年 / 100卷 / 05期
关键词：
D O I：
10.1021/jp951679+
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 adsorption and reaction of formic acid on clean and oxygen-modified Mo(110) surfaces have been studied using temperature programmed desorption (TPD) and high-resolution electron energy loss spectroscopy (HREELS). The adsorption of formic acid on Mo(110) and oxygen-modified Mo(110) surfaces is largely irreversible. Only similar to 30% of an adsorbed monolayer desorbs molecularly from the dean and oxygen-modified surfaces. However, the distribution of the decomposition products and the reaction pathways are significantly different on the two surfaces. Formyl species, monodentate and bridge-bonded, are found on both surfaces, with the monodentate promoted by the presence of oxygen, apparently due to a site-blocking effect. A CO2delta- species has been identified for the first time as an intermediate in the decomposition of the formate species on the oxygen-modified Mo(110) surface.
引用
收藏
页码：1753 / 1760
页数：8
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