Ethanol oxidation on PtRu electrodes studied by differential electrochemical mass spectrometry

被引：253

作者：

Fujiwara, N

Friedrich, KA

Stimming, U

机构：

[1] Forschungszentrum Julich, IEV, D-52425 Julich, Germany

[2] Minist Int Trade & Ind, AIST, Osaka Natl Res Inst, Ikeda, Osaka 5638577, Japan

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1999年 / 472卷 / 02期

关键词：

electrocatalytic oxidation; ethanol; PtRu electrode; DEMS;

D O I：

10.1016/S0022-0728(99)00282-X

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The oxidation of ethanol in aqueous HClO(4), was studied on co-electrodeposited PtRu electrodes in a temperature range of 5-40 degrees C by means of differential electrochemical mass spectrometry (DEMS). The formation of carbon dioxide and acetaldehyde were monitored by ion currents at appropriate masses. The presence of Ru promotes the surface reaction between the organic chemisorbate and the oxidant, whereas it may inhibit ethanol adsorption on the electrode. Optimum composition of the electrode for total oxidation was found to vary from Pt(0.67)Ru(0.33) at 5 degrees C to Pt(0.85)Ru(0.15) at higher temperatures. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：120 / 125

页数：6

共 25 条

[1] [Anonymous], 1990, ADV ELECTROCHEMICAL
[2] Aricò AS, 1998, ELECTROCHEM SOLID ST, V1, P66, DOI 10.1149/1.1390638
[3] INSITU ANALYSIS BY INFRARED REFLECTANCE SPECTROSCOPY OF THE ADSORBED SPECIES RESULTING FROM THE ELECTROSORPTION OF ETHANOL ON PLATINUM IN ACID-MEDIUM
BEDEN, B
MORIN, MC
HAHN, F
LAMY, C
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1987, 229 (1-2): : 353 - 366
[4] INTERMEDIATES AND PRODUCTS OF ETHANOL OXIDATION ON PLATINUM IN ACID-SOLUTION
BITTINSCATTANEO, B
WILHELM, S
CATTANEO, E
BUSCHMANN, HW
VIELSTICH, W
[J]. BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1988, 92 (11): : 1210 - 1218
[5] BITTINSCATTANEO B, 1991, ELECTROANALYTICAL CH, V17, P181
[6] CO ELECTROOXIDATION ON WELL-CHARACTERIZED PT-RU ALLOYS
GASTEIGER, HA
MARKOVIC, N
ROSS, PN
CAIRNS, EJ
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (02) : 617 - 625
[7] METHANOL ELECTROOXIDATION ON WELL-CHARACTERIZED PT-RN ALLOYS
GASTEIGER, HA
MARKOVIC, N
ROSS, PN
CAIRNS, EJ
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1993, 97 (46) : 12020 - 12029
[8] TEMPERATURE-DEPENDENT METHANOL ELECTROOXIDATION ON WELL-CHARACTERIZED PT-RU ALLOYS
GASTEIGER, HA
MARKOVIC, N
ROSS, PN
CAIRNS, EJ
[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1994, 141 (07) : 1795 - 1803
[9] CO ADSORPTION AND OXIDATION ON PT AND PT-RU ALLOYS - DEPENDENCE ON SUBSTRATE COMPOSITION
IANNIELLO, R
SCHMIDT, VM
STIMMING, U
STUMPER, J
WALLAU, A
[J]. ELECTROCHIMICA ACTA, 1994, 39 (11-12) : 1863 - 1869
[10] A SIMPLIFIED DEMS SET-UP FOR ELECTROCATALYTIC STUDIES OF POROUS PTRU ALLOYS
IANNIELLO, R
SCHMIDT, VM
[J]. BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1995, 99 (01): : 83 - 86

← 1 2 3 →