IRAS STUDY OF CO ADSORPTION ON MIXED CO AND S-OVERLAYERS ON MO(110)

被引：10

作者：

KUHN, WK ^{[1
]}

HE, JW ^{[1
]}

GOODMAN, DW ^{[1
]}

机构：

[1] TEXAS A&M UNIV,DEPT CHEM,COLL STN,TX 77845

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1994年 / 98卷 / 01期

关键词：

D O I：

10.1021/j100052a044

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：

Infrared reflection absorption spectroscopy (IRAS) was used to study the adsorption of carbon monoxide on mixed S and Co over layers on a Mo(110) surface. The results of this study indicate that there is a migration/segregation of the adatoms into 2-D and 3-D islands and that the different domains are distinguishable by the stretching frequency of the adsorbed CO. Clean Mo(110) as well as sulfided Co, (8X2)Co, p(2X2)S, and c(2X2)S domains on the Mo(110) surface are all observable. In addition, sulfur was seen to act as both a site blocker and electron-withdrawing agent on these surfaces. Finally, data obtained in this study suggest that the active adsorption site in a Co-MoS2 catalyst could be a Co-promoted Mo-S site.

引用

页码：264 / 269

页数：6

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