A study of the anodic oxidation of methanol on Pt in alkaline solutions

被引：224

作者：

Yu, EH

Scott, K

Reeve, RW

机构：

[1] Newcastle Univ, Dept Chem & Proc Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

[2] QinetiQ Haslar, Power Sources Grp, Gosport PO12 2AG, Hants, England

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2003年 / 547卷 / 01期

关键词：

methanol oxidation; alkaline media; carbonate; bicarbonate; poisoning; Ac impedance;

D O I：

10.1016/S0022-0728(03)00172-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this study, the electro-oxidation of methanol was carried out on a platinised electrode in various alkaline media to examine the role of OHads species and the influence of anions in the electrolyte on the methanol oxidation reaction. Cyclic voltammetry, steady state and quasi-steady state polarisation, and electrochemical impedance spectroscopy methods were used to investigate the reaction kinetics and mechanism. The activity of the methanol oxidation reaction in aqueous alkaline systems was observed to vary with the pH or OH species coverage on the electrode surface. The activity decreased in the order of NaOH > Na2CO3 > NaHCO3. (C) 2003 Published by Elsevier Science B.V.

引用

页码：17 / 24

页数：8

共 19 条

[11] STRUCTURAL EFFECTS IN THE ELECTROOXIDATION OF METHANOL IN ALKALINE-MEDIUM - COMPARISON OF PLATINUM SINGLE-CRYSTAL AND POLYCRYSTALLINE ELECTRODES [J].