THE ROLE OF COADSORBED OXYGEN IN NCO FORMATION ON RU(001)

被引：20

作者：

KOSTOV, KL

RAUSCHER, H

MENZEL, D

机构：

[1] Physik-Department E20, Technische Universität München, D-8046 Garching, James-Franck-Strasse

来源：

SURFACE SCIENCE | 1993年 / 287卷 / pt A期

关键词：

D O I：

10.1016/0039-6028(93)90787-K

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：

Following our earlier observation of isocyanate (NCO) synthesis on Ru(001) from CO and dissociated NO, we have now studied the (N + CO)/Ru(001) and (N + O + CO)/Ru(001) coadsorption systems using HREELS, TPD and LEED. Isocyanate is formed at 200-300 K as a result of the interaction between coadsorbed N and CO only in the presence of coadsorbed oxygen, and the amount of synthesized NCO (for equal N and CO amounts) depends strongly on the structure of the preadsorbed (N + O) layer. The possible roles of the electrostatic dipole field, induced by oxygen adatoms on the (N + CO) complex, and of different adsorbate sites, are discussed.

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页码：283 / 287

页数：5

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