THE INFLUENCE OF CARBON-MONOXIDE ON HYDROGEN ABSORPTION BY THIN-FILMS OF PALLADIUM

被引：60

作者：

CZERWINSKI, A ^{[1
]}

ZAMPONI, S ^{[1
]}

MARASSI, R ^{[1
]}

机构：

[1] UNIV CAMERINO,DIPARTIMENTO SCI CHIM,I-62032 CAMERINO,ITALY

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1991年 / 304卷 / 1-2期

关键词：

D O I：

10.1016/0022-0728(91)85505-J

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

(1) Adsorbed carbon monoxide inhibits the hydrogen absorption and desorption reactions in a thin-layer palladium electrode. A"blocking" effect of adsorbed hydrogen inside the palladium by adsorbed carbon monoxide is observed. (2) During CO adsorption at 0.00 V an anodic current appears, probably due to the oxidation of adsorbed hydrogen during the exchange with carbon monoxide molecules. (3) In addition to "bridged" and "linearly" bonded CO molecules as the predominant surface species, another adsorption product may exist on the palladium surface. (4) Electrodes constructed by depositing a thin layer of Pd on gold allow the ratio between absorbed and adsorbed hydrogen to be decreased. This creates new possibilities for electrochemical studies of this metal. © 1991.

引用

页码：233 / 239

页数：7

共 26 条

[1] THE ELECTROOXIDATION OF CO - A TEST REACTION IN ELECTROCATALYSIS [J].