Off-normal emission of N2 produced by desorption mediated reaction of NO on Pd(110) surface

Masamichi Ikai, Hong He, Christopher E. Borroni-Bird, Hideki Hirano, Ken ichi Tanaka

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26 Citations (Scopus)

Abstract

NO molecules adsorbed on a Pd(110) surface undergo desorption with maxima at approximately 495 K at low coverage but two desorption peaks at approximately 370 K and 495 K at high coverage. Desorption of NO at 495 K mediates the emission of N2 and N2O. However, desorption of NO at 370 K produces neither N2 nor N2O. NO molecules desorbed at 495 K obey cos θ towards the 〈001〉 direction, whereas the N2 molecules emitted at 495 K have a very sharp spatial distribution 37° off-normal to the surface in the 〈001〉 direction. The emission of N2 has a full width at half maximum (FWHM) of 19° which can be represented by cos46(θ - 37). The spatial distributions of N2 and NO in the 〈11̄0〉 direction, however, obey cos4.2θ and cos1.6θ, respectively.

Original languageEnglish
Pages (from-to)L973-L976
JournalSurface Science
Volume315
Issue number1-2
DOIs
Publication statusPublished - 1994 Aug 10
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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    Ikai, M., He, H., Borroni-Bird, C. E., Hirano, H., & Tanaka, K. I. (1994). Off-normal emission of N2 produced by desorption mediated reaction of NO on Pd(110) surface. Surface Science, 315(1-2), L973-L976. https://doi.org/10.1016/0039-6028(94)90528-2