THE POTENTIAL DEPENDENCE OF INTERMEDIATES IN METHANOL OXIDATION OBSERVED IN THE STEADY-STATE BY FTIR SPECTROSCOPY

被引：39

作者：

CHANDRASEKARAN, K

WASS, JC

BOCKRIS, JO

机构：

[1] Department of Chemistry, Texas A&M University, Texas 77843, College Station

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1990年 / 137卷 / 02期

关键词：

D O I：

10.1149/1.2086491

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The structure of electrochemical intermediates of methanol oxidation on platinum in aqueous sulfuric acid has been investigated under steady state conditions using polarization modulation Fourier transform infrared reflection absorption spectroscopy. Terminally bonded CO and bridge-bonded CO are observed in the cathodic to anodic sequence. However, only bridge-bonded CO is observed in the anodic to cathodic sequence. The conventionally assumed C—O—H group was not observed. The spectroscopic results are compared with similar information obtained by means of radiotracer and potentiodynamic techniques. A new mechanism is proposed which is intended to apply to the steady-state situation and may differ from that pertaining to potential sweep data. © 1990, The Electrochemical Society, Inc. All rights reserved.

引用

页码：518 / 524

页数：7

共 45 条

[21] POTENTIAL-DEPENDENT WATER ORIENTATION - AN INSITU SPECTROSCOPIC STUDY
HABIB, MA
BOCKRIS, JO
[J]. LANGMUIR, 1986, 2 (04) : 388 - 392
[22] FT-IR SPECTROMETRY FOR THE SOLID-SOLUTION INTERFACE
HABIB, MA
BOCKRIS, JO
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1984, 180 (1-2): : 287 - 306
[23] METHANOL-AIR FUEL-CELL - SELECTIVE REVIEW OF METHANOL OXIDATION MECHANISMS AT PLATINUM-ELECTRODES IN ACID ELECTROLYTES
HAMPSON, NA
WILLARS, MJ
MCNICOL, BD
[J]. JOURNAL OF POWER SOURCES, 1979, 4 (03) : 191 - 201
[24] KEEVES R, 1974, MODERN ASPECTS ELECT, V9
[25] THE INFRARED-SPECTRUM OF LINEARLY ADSORBED CO SPECIES PRODUCED BY CHEMISORPTION OF METHANOL ON A SMOOTH PLATINUM-ELECTRODE AT HIGH ANODIC POTENTIALS
KUNIMATSU, K
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1983, 145 (01): : 219 - 224
[26] INFRARED SPECTROSCOPIC STUDY OF METHANOL AND FORMIC-ACID ADSORBATES ON A PLATINUM-ELECTRODE .2. ROLE OF THE LINEAR CO(A) DERIVED FROM METHANOL AND FORMIC-ACID IN THE ELECTROCATALYTIC OXIDATION OF CH3OH AND HCOOH
KUNIMATSU, K
KITA, H
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1987, 218 (1-2): : 155 - 172
[27] INFRARED SPECTROSCOPIC STUDY OF METHANOL AND FORMIC-ACID ADSORBATES ON A PLATINUM-ELECTRODE .1. COMPARISON OF THE INFRARED-ABSORPTION INTENSITIES OF LINEAR CO(A) DERIVED FROM CO, CH3OH AND HCOOH
KUNIMATSU, K
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1986, 213 (01): : 149 - 157
[28] POTENTIAL DEPENDENCE OF INFRARED REFLECTION ABSORPTION-SPECTRUM OF THE ADSORBED CARBON-MONOXIDE PRODUCED BY CHEMISORPTION OF METHANOL ON A SMOOTH PLATINUM-ELECTRODE - A NEW INSITU IR SPECTROSCOPIC METHOD FOR THE DETERMINATION OF THE SPECTRUM AT A FIXED POTENTIAL
KUNIMATSU, K
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1982, 140 (01): : 205 - 210
[29] STRUCTURAL EFFECTS IN ELECTROCATALYSIS - A COMPARATIVE-STUDY OF THE OXIDATION OF CO, HCOOH AND CH3OH ON SINGLE-CRYSTAL PT ELECTRODES
LAMY, C
LEGER, JM
CLAVILIER, J
PARSONS, R
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1983, 150 (1-2): : 71 - 77
[30] MULTIPLE CURRENT COMPONENTS FOR METHANOL ELECTROSORPTION AND ELECTROOXIDATION AT PLATINUM IN ACIDIC SOLUTIONS
LEIVA, EPM
GIORDANO, MC
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1983, 158 (01) : 115 - 130

← 1 2 3 4 5 →