ON THE HYDROGEN EVOLUTION DURING THE ELECTROCHEMICAL OXIDATION OF ALDEHYDES AT IB METALS

被引：43

作者：

ANASTASIJEVIC, NA ^{[1
]}

BALTRUSCHAT, H ^{[1
]}

HEITBAUM, J ^{[1
]}

机构：

[1] UNIV WITTEN HERDECKE,INST PHYS CHEM,STOCKUMER STR 10,O-5810 WITTEN,GERMANY

来源：

ELECTROCHIMICA ACTA | 1993年 / 38卷 / 08期

关键词：

FORMALDEHYDE; ON LINE MASS SPECTROMETRY; COPPER ELECTRODE; SILVER ELECTRODE; GOLD ELECTRODE;

D O I：

10.1016/0013-4686(93)80214-K

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The amount of hydrogen evolved during the oxidation of formaldehyde at Ib electrodes was determined as a function of the potential. The current efficiency (amount of H-2 per two anodic electrons) can exceed 100% suggesting a reaction sequence which involves the (non-electrochemical) dissociation of a formaldehyde molecule into H-2 and HCOO-. Further suppport for such a potential dependent and heterogeneously catalyzed chemical reaction is given by isotope experiments. Smaller amounts of hydrogen are also evolved during the oxidation of acetaldehyde and propionaldehyde, showing that the release of a hydrogen molecule can also be coupled to electrochemical oxidation.

引用

页码：1067 / 1072

页数：6

共 17 条

[1] STRUCTURAL EFFECTS IN ELECTROCATALYSIS - OXIDATION OF FORMALDEHYDE ON GOLD AND PLATINUM SINGLE-CRYSTAL ELECTRODES IN ALKALINE-SOLUTION [J].

ADZIC, RR ;

AVRAMOVIVIC, ML ;

TRIPKOVIC, AV .

ELECTROCHIMICA ACTA, 1984, 29 (10) :1353-1357

[2] A STUDY OF THE OXIDATION OF FORMALDEHYDE ON AU(332) BY ROTATING-DISK RING METHOD [J].

AVRAMOVIVIC, ML ;

ANASTASIJEVIC, NA ;

ADZIC, RR .

ELECTROCHIMICA ACTA, 1990, 35 (04) :725-729

[3] ELECTROCHEMICAL DETECTION OF ORGANIC GASES - THE DEVELOPMENT OF A FORMALDEHYDE SENSOR [J].

BALTRUSCHAT, H ;

ANASTASIJEVIC, NA ;

BELTOWSKABRZEZINSKA, M ;

HAMBITZER, G ;

HEITBAUM, J .

BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1990, 94 (09) :996-1000

[4] POLAROGRAPHIC REDUCTION OF ALDEHYDES AND KETONES .15. HYDRATION AND ACID-BASE EQUILIBRIA ACCOMPANYING REDUCTION OF ALIPHATIC ALDEHYDES [J].

BARNES, D ;

ZUMAN, P .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1973, 46 (02) :323-342

[5] NON-FARADAIC ELECTROCHEMICAL MODIFICATION OF CATALYTIC ACTIVITY .1. THE CASE OF ETHYLENE OXIDATION ON PT [J].

BEBELIS, S ;

VAYENAS, CG .

JOURNAL OF CATALYSIS, 1989, 118 (01) :125-146

[6] ELECTROCHEMICAL OXIDATION OF FORMALDEHYDE ON GOLD AND SILVER [J].

BELTOWSKABRZEZINSKA, M .

ELECTROCHIMICA ACTA, 1985, 30 (09) :1193-1198

[7] ON THE ANODIC-OXIDATION OF FORMALDEHYDE ON PT, AU AND PT/AU-ALLOY ELECTRODES IN ALKALINE-SOLUTION [J].

BELTOWSKABRZEZINSKA, M ;

HEITBAUM, J .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1985, 183 (1-2) :167-181

[8] THE IMPORTANCE OF SUPERFICIAL (ADATOM) SURFACE OXIDATION IN THE ELECTROCATALYTIC BEHAVIOR OF NOBLE-METALS IN AQUEOUS-MEDIA [J].

BURKE, LD ;

OLEARY, WA .

JOURNAL OF APPLIED ELECTROCHEMISTRY, 1989, 19 (05) :758-767

[9] ELECTROOXIDATION OF FORMALDEHYDE ON CU + NI-ALLOY ELECTRODES IN ALKALINE-SOLUTIONS [J].

ENYO, M .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1986, 201 (01) :47-59

[10] POTENTIAL-DEPENDENT RECONSTRUCTION AT ORDERED AU(100)-AQUEOUS INTERFACES AS PROBED BY ATOMIC-RESOLUTION SCANNING TUNNELING MICROSCOPY [J].

GAO, XP ;

HAMELIN, A ;

WEAVER, MJ .

PHYSICAL REVIEW LETTERS, 1991, 67 (05) :618-621

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