Mechanism of the ammonia formation from NO-H2. A model study with Pt-Rh alloy single crystal surfaces

J. Siera, B. E. Nieuwenhuys, H. Hirano, T. Yamada, K. I. Tanaka

研究成果: Article査読

35 被引用数 (Scopus)

抄録

The reduction of NO by H2 was studied over three different Pt-Rh single crystal surfaces, i.e. Pt-Rh(111), (410) and (100). The adsorption and dissociation of NO was studied by HREELS, LEED, XPS, AES and TDS. It was found that the dissociation of NO and its reaction with H2 is very surface structure sensitive. The selectivity towards nitrogen and the dissociation activity increases in the same order, i.e. Pt-Rh(111) < (100) < 410). Nitrogen atoms were easily hydrogenated at 400 K in hydrogen to NHx (x = 1 or 2) on the surface. A model is proposed in which the selectivity of the NO-H2 reaction over Pt-Rh surfaces is determined by the relative amounts of hydrogen, NO and nitrogen adatoms on the surface.

本文言語English
ページ(範囲)179-189
ページ数11
ジャーナルCatalysis Letters
3
2
DOI
出版ステータスPublished - 1989 3 1
外部発表はい

ASJC Scopus subject areas

  • 触媒
  • 化学 (全般)

フィンガープリント

「Mechanism of the ammonia formation from NO-H<sub>2</sub>. A model study with Pt-Rh alloy single crystal surfaces」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル