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

Authors
KOSTOV KL RAUSCHER H MENZEL D
Citation
Kl. Kostov et al., THE ROLE OF COADSORBED OXYGEN IN NCO FORMATION ON RU(001), Surface science, 287, 1993, pp. 283-287
Citations number
16
Categorie Soggetti
Chemistry Physical
Journal title
Surface science → ACNP
ISSN journal
00396028
Volume
287
Year of publication
1993
Part
A
Pages
283 - 287
Database
ISI
SICI code
0039-6028(1993)287:<283:TROCOI>2.0.ZU;2-D
Abstract
Following our earlier observation of isocyanate (NCO) synthesis on Ru( 001) from CO and dissociated NO, we have now studied the (N + CO)/Ru(0 01) and (N + O + CO)/Ru(001) coadsorption systems using HREELS, TPD an d LEED. Isocyanate is formed at 200-300 K as a result of the interacti on between coadsorbed N and CO only in the presence of coadsorbed oxyg en, and the amount of synthesized NCO (for equal N and CO amounts) dep ends strongly on the structure of the preadsorbed (N + O) layer. The p ossible roles of the electrostatic dipole field, induced by oxygen ada toms on the (N + CO) complex, and of different adsorbate sites, are di scussed.