Adsorption and reactivity of SO2 on Ir(111) and Rh(111)

被引：22

作者：

Fujitani, T. ^{[1
]}

Nakamura, I. ^{[1
]}

Kobayashi, Y. ^{[1
]}

Takahashi, A. ^{[1
]}

Haneda, M. ^{[1
]}

Hamada, H. ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Res Inst Innovat Sustainable Chem, Tsukuba, Ibaraki 3058569, Japan

来源：

SURFACE SCIENCE | 2007年 / 601卷 / 06期

基金：

日本学术振兴会;

关键词：

Ir(111); Rh(111); X-ray photoelectron spectroscopy; low-energy electron diffraction; sulfur dioxide;

D O I：

10.1016/j.susc.2007.01.034

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：

The adsorption and reactivity of SO2 on the Ir(111) and Rh(111) surfaces were studied by surface science techniques. X-ray photoelectron spectroscopy measurements showed that SO2 was molecularly adsorbed on both the Ir(111) surface and the Rh(111) surface at 200 K. Adsorbed SO2 on the Ir(111) surface disproportionated to atomic sulfur and SO3 at 300 K, whereas adsorbed SO2 on the Rh(111) surface dissociated to atomic sulfur and oxygen above 250 K. Only atomic sulfur was present on both surfaces above 500 K, but the formation process and structure of the adsorbed atomic sulfur on Ir(111) were different from those on Rh(111). On Ir(111), atomic sulfur reacted with surface oxygen and was completely removed from the surface, whereas on Rh(111), sulfur did not react with oxygen. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：1615 / 1622

页数：8

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