Electrochemical Oxidation in a  CH 4 ‐  H 2 O  System at the Interface of a Pt Electrode and  Y 2 O 3‐Stabilized ZrO2 Electrolyte: II. The Rates of Electrochemical Reactions Taking Place in Parallel

1998 ◽  
Vol 145 (9) ◽  
pp. 3117-3122 ◽  
Author(s):  
Shigenori Onuma ◽  
Atsushi Kaimai ◽  
Ken‐ichi Kawamura ◽  
Yutaka Nigara ◽  
Tatsuya Kawada ◽  
...  
Keyword(s):  
Electrochemical Oxidation ◽  
Electrochemical Reactions ◽  
Pt Electrode

Enhanced Electrochemical Oxidation of BH4− on Pt Electrode in Alkaline Electrolyte with the Addition of Thiourea

2010 ◽  
Vol 132 ◽  
pp. 271-278 ◽  
Author(s):  
Dan Mei Yu ◽  
Chang Guo Chen ◽  
Shu Lei ◽  
Xiao Yuan Zhou ◽  
Guo Zhong Cao
Keyword(s):  
Cyclic Voltammetry ◽  
Electrochemical Oxidation ◽  
Electrochemical Impedance ◽  
Alkaline Electrolyte ◽  
Hydroxyl Groups ◽  
Catalytic Hydrolysis ◽  
Direct Oxidation ◽  
Pt Electrode ◽  
Separation Membrane ◽  
And Diffusion

The electrochemical oxidation of sodium borohydride (NaBH4) on Pt electrode in alkaline electrolyte with the addition of thiourea has been studied by means of cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and chronopotentiometry (CP). NaBH4 is readily to react with hydroxyl groups to release hydrogen through either direct oxidation or catalytic hydrolysis. The experimental results demonstrated that the addition of an appropriate amount of thiourea to the alkaline electrolyte resulted in the suppression of catalytic hydrolysis and diffusion of borohydride ions through the separation membrane.

β-Substitution de la méso-tétraphénylporphyrine de zinc par voie électrochimique

1991 ◽  
Vol 69 (7) ◽  
pp. 1161-1165 ◽  
Author(s):  
Alain Giraudeau ◽  
Lana El Kahef
Keyword(s):  
Carbon Atom ◽  
Nucleophilic Substitution ◽  
Key Words ◽  
Electrochemical Oxidation ◽  
Electrochemical Reactions

The electrochemical oxidation of the zinc tetraphenylporphyrin complex in a mixed acetonitrile–dichloroethane solution in the presence of nucleophiles (Py, 3-Pic, [Formula: see text], SCN−) leads to the formation of the corresponding monosubstituted metalloporphyrin. For each of these nucleophiles the substitution occurs at a pyrrole carbon atom (β-substitution). The electrochemical conditions of these substitutions are discussed and an overall reaction is proposed. Key words: porphyrins, electrochemical reactions, nucleophilic substitution.

Palladium-loaded tantalum oxide modified Pt electrode toward electrochemical oxidation of ethylene glycol

2019 ◽  
Vol 839 ◽  
pp. 166-172
Author(s):  
Yanhong Zhao ◽  
Liyuan Wu ◽  
Kaiwen Zhou ◽  
Junyu Lang ◽  
Gen Wang ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Electrochemical Oxidation ◽  
Tantalum Oxide ◽  
Pt Electrode

New insights on the electrochemical oxidation of ethanol on carbon-supported Pt electrode by a novel electrochemical mass spectrometry configuration

2016 ◽  
Vol 63 ◽  
pp. 48-51 ◽  
Author(s):  
Olmedo Guillén-Villafuerte ◽  
Gonzalo García ◽  
Ma Carmen Arévalo ◽  
José Luis Rodríguez ◽  
Elena Pastor
Keyword(s):  
Mass Spectrometry ◽  
Electrochemical Oxidation ◽  
Pt Electrode ◽  
Oxidation Of Ethanol

Recent Progress in the Application of Ionic Liquids in Electrochemical Oxidation and Reduction

2019 ◽  
Vol 41 (2) ◽  
pp. 264-264
Author(s):  
Nan Yao and Yu Lin Hu Nan Yao and Yu Lin Hu
Keyword(s):  
Ionic Liquids ◽  
Electrochemical Oxidation ◽  
Electrochemical Reactions ◽  
Powerful Method ◽  
Practical Applications ◽  
Yield Efficiency ◽  
Electrochemical Processes ◽  
Energy Conversion And Storage ◽  
Air Battery ◽  
And Storage

Electrochemical oxidation and reduction, with clean power, are key to energy conversion and storage. For example, electrochemical oxidation is a determining step for fuel cells, combination of electrochemical oxidation and reduction can form a metal-air battery. Electrochemical oxidation and reduction make significant contributions to prepare valuable chemicals directly and improve yield efficiency and reduce the three wastes, which have become one of the green methodologies. Ionic liquids have attracted increasing attentions in the area of electrochemistry due to their significant properties including good chemical and thermal stability, wide liquid temperature range, considerable ionic conductivity, nonflammability, broad electrochemical potential window and tunable solvent properties. Up to now, abundant studies of ionic liquids have reported for their practical applications for electrochemical reactions. This review covers recent studies on the applications of ILs as green and universal replacements for the traditional reagents in electrochemical oxidation and reduction. The adaptabilities of ILs in these reactions are predicted as a solution to the problems of conventional electrochemical processes and to become a powerful method in electrochemical oxidation and reduction.

Electrochemical Oxidation of Methanol at Pt Modified Electrode in Carbonate Solution

2013 ◽  
Vol 11 (2) ◽  
Author(s):  
M. A. Ibrahim
Keyword(s):  
Electrochemical Oxidation ◽  
Methanol Oxidation ◽  
Modified Electrode ◽  
Current Density ◽  
Carbonate Solution ◽  
Pt Electrode ◽  
Oxidation Of Methanol

In this paper, we discuss the effect of Pb, Cd, Ni, Zn, and Mn adatoms on the rate of methanol oxidation at the Pt electrode in the carbonate solution. In Na2B4O7, the presence of Cd, Ni, Mn, and Zn adatoms increased the electrocatalytic current density while the presence of Pb inhibits the methanol oxidation.

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