ChemInform Abstract: CATHODIC BEHAVIOR OF LEAD DIOXIDE ELECTRODE IN SULFURIC ACID SOLUTION

1979 ◽  
Vol 10 (1) ◽  
Author(s):  
A. M. AZZAM ◽  
S. S. ABD EL REHIM ◽  
W. H. BOCTOR
Keyword(s):  
Sulfuric Acid ◽  
Acid Solution ◽  
Sulfuric Acid Solution ◽  
Lead Dioxide ◽  
Lead Dioxide Electrode

scholarly journals Anodic Oxidation of Cyclohexanone on Lead Dioxide Electrode in Aqueous Sulfuric Acid Solution

1985 ◽  
Vol 58 (6) ◽  
pp. 1717-1722 ◽  
Author(s):  
Atsutaka Kunai ◽  
Kazuhito Hatoh ◽  
Yoshinobu Hirano ◽  
Junji Harada ◽  
Kazuo Sasaki
Keyword(s):  
Sulfuric Acid ◽  
Acid Solution ◽  
Anodic Oxidation ◽  
Sulfuric Acid Solution ◽  
Lead Dioxide ◽  
Lead Dioxide Electrode ◽  
Aqueous Sulfuric Acid

The Lead Dioxide Anode. II. The Kinetics and Participation of the Lead Dioxide Electrode in Electrochemical Oxidation Reactions in Sulfuric Acid

1989 ◽  
Vol 42 (9) ◽  
pp. 1527 ◽  
Author(s):  
TH Randle ◽  
AT Kuhn
Keyword(s):  
Sulfuric Acid ◽  
Electrochemical Oxidation ◽  
Maximum Rate ◽  
Lead Dioxide ◽  
Chemical Oxidation ◽  
Oxidation Reactions ◽  
Electrochemical Regeneration ◽  
Electrode Surfaces ◽  
Lead Dioxide Electrode ◽  
Lead Dioxide Anode

Lead dioxide is a strong oxidizer in sulfuric acid, consequently electrochemical oxidation of solution species at a lead dioxide anode may occur by a two-step, C-E process (chemical oxidation of solution species by PbO2 followed by electrochemical regeneration of the reduced lead dioxide surface). The maximum rate of each step has been determined in sulfuric acid for specified lead dioxide surfaces and compared with the rates observed for the electrochemical oxidation of cerium(III) and manganese(II) on the same electrode surfaces. While the rate of electrochemical oxidation of a partially reduced PbO2 surface may be sufficient to support the observed rates of CeIII and MnII oxidation at the lead dioxide anode, the rate of chemical reaction between PbO2 and the reducing species is not. Hence it is concluded that the lead dioxide electrode functions as a simple, 'inert' electron-transfer agent during the electrochemical oxidation of CellI and MnII in sulfuric acid. In general, it will most probably be the rate of the chemical step which determines the feasibility or otherwise of the C-E mechanism.

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