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THE EFFECT OF K, CS AND O ATOMS ON ETHYLENE ADSORPTION ON THE PT(111) SURFACE

被引：49
作者：
CASSUTO, A
MANE, M
HUGENSCHMIDT, M
DOLLE, P
JUPILLE, J
机构：
[1] CNRS, Laboratoire Maurice Letort, associé à l'Université de Nancy I
来源：
SURFACE SCIENCE | 1990年 / 237卷 / 1-3期
关键词：
D O I：
10.1016/0039-6028(90)90519-E
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 of C2H4 on bare and Cs-, K-, O-precovered Pt(111) surfaces has been investigated, using UPS and TDS. All coadsorbates induce the appearance of more loosely (π-bonded) adsorbed species. In the presence of alkali adatoms, these new species are almost undistorted compared to gaseous, multilayered ethylene and ethylene adsorbed as a monolayer at 37 K. However, some distortion exists when ethylene is coadsorbed with oxygen atoms. The C2H4 valence-level shifts observed in the presence of K (Cs) are consistent with the electrostatic field existing in the vicinity of the alkali metal adatoms. © 1990.
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页码：63 / 71
页数：9
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