IRAS study of pi-bonded ethylene on a Pt(111) surface in the presence of gaseous ethylene and hydrogen

被引：25

作者：

Kubota, J

Ohtani, T

Kondo, JN

Hirose, C

Domen, K

机构：

[1] Res. Lab. of Resources Utilization, Tokyo Institute of Technology, Yokohama 226, 4259 Nagatsuta, Midori-ku

来源：

APPLIED SURFACE SCIENCE | 1997年 / 121卷

关键词：

D O I：

10.1016/S0169-4332(97)00364-4

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：

Adsorption of ethylene on Pt(111) in the presence of gaseous ethylene up to 1300 Pa was investigated using infrared reflection absorption spectroscopy (IRAS). Ethylene was reversibly adsorbed on bare Pt(111) at 1300 Pa and 150-180 K giving an IRAS peak at 954 cm(-1) which was assigned to the out-of-plane bending mode of C-H of the pi-bonded ethylene. Adsorption of ethylene on Pt(111) covered by ethylidyne was next examined. It was found that ethylene was adsorbed on ethylidyne-covered Pt(111) in the presence of gaseous ethylene at 1300 Pa and 150 K but the adsorption was weaker than that on bare Pt(111). Adsorption of ethylene on bare Pt(111) from the mixture of ethylene and hydrogen (1/1, v/v) was also investigated. In the presence of hydrogen gas, the adsorption of the pi-bonded ethylene was also slightly inhibited. (C) 1997 Elsevier Science B.V.

引用

页码：548 / 551

页数：4

共 22 条

[1]

BERTONI P, 1984, POP COMPUT, V3, P107

[2] STUDIES ON SELF-SUSTAINED REACTION-RATE OSCILLATIONS .1. REAL-TIME SURFACE INFRARED MEASUREMENTS DURING OSCILLATORY OXIDATION OF CARBON-MONOXIDE ON PLATINUM [J].