Displacement reaction of CO by NO on the Ni(111) surface

被引：15

作者：

Beniya, Atsushi ^{[1
]}

Isomura, Noritake ^{[1
]}

Hirata, Hirohito ^{[2
]}

Watanabe, Yoshihide ^{[1
]}

机构：

[1] Toyota Cent Res & Dev Labs Inc, Nagakute, Aichi 4801192, Japan

[2] Toyota Motor Co Ltd, Susono, Shizuoka 4101193, Japan

来源：

SURFACE SCIENCE | 2013年 / 613卷

关键词：

Infrared reflection absorption spectroscopy; Nickel; CO; NO; Co-adsorption; Lateral interaction; CARBON-MONOXIDE; COADSORBED NO; COADSORPTION; ADSORPTION; OXYGEN; PD(111); DESORPTION; HREELS; IRAS;

D O I：

10.1016/j.susc.2013.03.001

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：

Co-adsorption states and thermal stability of NO + CO on Ni(111) were investigated using infrared reflection absorption spectroscopy and temperature programed desorption. The mechanism for the displacement of CO by NO was clarified. Co-adsorbed NO induced hollow-to-ontop site-conversion of CO; NO molecules occupied hollow sites. Ontop and two hollow CO species were observed in the co-adsorbed phase. The ontop and lower frequency hollow CO were assigned to CO neighboring hollow NO; higher frequency hollow CO were assigned to CO forming those domain. The hollow-to-ontop site-conversion of CO occurred due to local interactions between CO and NO, which destabilized the CO by 0.5 eV. This destabilization afforded facile displacement of CO by NO at 300 K. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：28 / 34

页数：7

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