THE INFLUENCE OF THE SURFACE-STRUCTURE ON THE ADSORPTION OF ETHENE, ETHANOL AND CYCLOHEXENE AS STUDIED BY DEMS

被引：89

作者：

SCHMIEMANN, U ^{[1
]}

MULLER, U ^{[1
]}

BALTRUSCHAT, H ^{[1
]}

机构：

[1] UNIV BONN,INST PHYS & THEORET CHEM,W-5300 BONN,GERMANY

来源：

ELECTROCHIMICA ACTA | 1995年 / 40卷 / 01期

关键词：

ORGANIC ADSORBATES; SINGLE CRYSTAL ELECTRODE; PLATINUM ELECTRODE; DIFFERENTIAL ELECTROCHEMICAL MASS SPECTROMETRY; ELECTRO CATALYSIS;

D O I：

10.1016/0013-4686(94)00243-T

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Using differential electrochemical mass spectrometry, the adsorption of ethene, ethanol and cyclohexene on mono- and polycrystalline Pt electrodes was studied. Experiments in (H2O)-O-18 showed that a part of the adsorbed ethene molecules contains oxygen. Ethanol mainly dissociates upon adsorption, yielding an adsorbed GO-like species and a CHx fragment which can be cathodically desorbed as methane. From a polycrystalline Pt electrode, adsorbed cyclohexene can be cathodically desorbed as benzene and cyclohexane in the same ratio as adsorbed benzene, and is therefore most likely to be identical to adsorbed benzene; cyclohexene adsorption on Pt(111) and Pt(110) mainly yields an oxygenated species in a similar reaction as that which occurs for a part of the adsorbing ethene.

引用

页码：99 / 107

页数：9

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