THE INTERACTION OF CO WITH MONOLAYER POTASSIUM ON RU(001) STUDIED BY THERMAL-DESORPTION AND METASTABLE QUENCHING SPECTROSCOPY

被引：12
|
作者：
ROCKER, GH [1 ]
HUANG, C [1 ]
COBB, CL [1 ]
METIU, H [1 ]
MARTIN, RM [1 ]
机构：
[1] UNIV CALIF SANTA BARBARA,DEPT CHEM,SANTA BARBARA,CA 93106
来源：
SURFACE SCIENCE | 1991年 / 244卷 / 1-2期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0039-6028(91)90174-Q
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：
From metastable quenching spectroscopy (MQS) and thermal desorption spectroscopy (TDS) we find that CO adsorbs well at 100 K on a monolayer of K deposited on Ru(001), but the sticking coefficient becomes negligible as the adsorption temperature is raised to 200 K. However once a (CO + K) layer has been prepared at 100 K, it remains stable up to temperatures as high as 500 K. In addition to the known CO and K MQS features, we also observe a peak which is not present with either of these adsorbates alone. Within the framework of the rehybridization model proposed by others, this peak may originate from the 1b2 orbital of rehybridized CO molecules.
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页码：103 / 112
页数：10
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