VOLTAMMETRIC BEHAVIOR IN PERCHLORIC-ACID OF ADSORBED RESIDUES FORMED AT OPEN CIRCUIT FROM THE ADSORPTION OF ACETALDEHYDE AND ETHANOL ON A PT(111) ELECTRODE

被引：12

作者：

CASES, F

VAZQUEZ, JL

PEREZ, JM

ALDAZ, A

机构：

[1] Departamento de Quimica-Fisica, Universidad de Alicante, Alicante, 03080

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1991年 / 310卷 / 1-2期

关键词：

D O I：

10.1016/0022-0728(91)85275-T

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Three clearly defined voltammetric peaks are produced by the oxidation of residues originating in the irreversible dissociative adsorption of acetaldehyde or ethanol. Only one of them (centered at 0.74 V) has been identified and assigned to the oxidation of adsorbed CO. Moreover, an unidentified small broad reduction peak at approximately 0.55 V appears in the negative sweep. This work is devoted to the study of the nature of the organic residue causing the appearance of the second oxidation peak (0.67 V). From the results obtained it is deduced that this residue is a two carbon molecule which when oxidized yields acetic acid.

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页码：403 / 415

页数：13

相关论文

共 16 条

[1] INSITU ANALYSIS BY INFRARED REFLECTANCE SPECTROSCOPY OF THE ADSORBED SPECIES RESULTING FROM THE ELECTROSORPTION OF ETHANOL ON PLATINUM IN ACID-MEDIUM [J].

BEDEN, B ;

MORIN, MC ;

HAHN, F ;

LAMY, C .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1987, 229 (1-2) :353-366

[2] INTERMEDIATES AND PRODUCTS OF ETHANOL OXIDATION ON PLATINUM IN ACID-SOLUTION [J].

BITTINSCATTANEO, B ;

WILHELM, S ;

CATTANEO, E ;

BUSCHMANN, HW ;

VIELSTICH, W .

BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1988, 92 (11) :1210-1218

[3] DISSOCIATIVE ADSORPTION OF ACETALDEHYDE ON PT(H,K,L) BASAL SURFACES [J].

CASES, F ;

VAZQUEZ, JL ;

PEREZ, JM ;

ALDAZ, A ;

CLAVILIER, J .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1990, 281 (1-2) :283-288

[4] DISSOCIATIVE ADSORPTION OF ETHANOL ON PT (H, K, L) BASAL SURFACES [J].

CASES, F ;

LOPEZATALAYA, M ;

VAZQUEZ, JL ;

ALDAZ, A ;

CLAVILIER, J .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1990, 278 (1-2) :433-440

[5]

CLAVILIER J, 1986, J ELECTROANAL CHEM, V199, P163

[6] ELECTROOXIDATION PATHWAYS OF SIMPLE ALCOHOLS AT PLATINUM IN PURE NONAQUEOUS AND CONCENTRATED AQUEOUS ENVIRONMENTS AS STUDIED BY REAL-TIME FTIR SPECTROSCOPY [J].

GAO, P ;

CHANG, SC ;

ZHOU, ZH ;

WEAVER, MJ .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1989, 272 (1-2) :161-178

[7] ON THE ADSORPTION AND OXIDATION OF ETHANOL ON PLATINUM AS STUDIED WITH INSITU IR SPECTROSCOPY [J].

HOLZE, R .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1988, 246 (02) :449-455

[8] THE ELECTROCHEMICAL OXIDATION OF ETHANOL ON PLATINUM - A SNIFTIRS STUDY [J].

IWASITA, T ;

VIELSTICH, W .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1988, 257 (1-2) :319-324

[9] REAL-TIME FTIR SPECTROSCOPY AS AN ELECTROCHEMICAL MECHANISTIC PROBE - ELECTROOXIDATION OF ETHANOL AND RELATED SPECIES ON WELL-DEFINED PT(111) SURFACES [J].

LEUNG, LWH ;

CHANG, SC ;

WEAVER, MJ .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1989, 266 (02) :317-336

[10] INSITU INFRARED REFLECTANCE SPECTROSCOPIC STUDY OF THE EARLY STAGES OF ETHANOL ADSORPTION AT A PLATINUM-ELECTRODE IN ACID-MEDIUM [J].

PEREZ, JM ;

BEDEN, B ;

HAHN, F ;

ALDAZ, A ;

LAMY, C .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1989, 262 (1-2) :251-261