Electrochemical studies on sulfonephthaleins. Part 2. Electrochemical reduction mechanism of catechol violet in aqueous solutions on a mercury electrode

Author(s):  
Refat Abdel-Hamid
1986 ◽  
Vol 15 (1) ◽  
pp. 125-135 ◽  
Author(s):  
Josep Claret ◽  
Joan M. Feliu ◽  
Carlos Müller ◽  
Josep M. Ribó ◽  
Xavier Serra

1987 ◽  
Vol 52 (9) ◽  
pp. 2132-2141
Author(s):  
Dimitra Sazou ◽  
Pantelis Karabinas

The electrochemical reduction of maleic and fumaric acids and their dimethyl esters have been investigated by cyclic voltammetry on HMDE in pure methanol. The cyclic voltammograms of the free acids show two successive reduction waves due to the influence of the different strength of the carboxylic groups on the double bond reduction. The reduction mechanism is verified by examining the effect of different supporting electrolytes, proton donors, and strong bases on the reduction waves. The double bond reduction of the corresponding dimethyl esters takes place in one step.


1985 ◽  
Vol 63 (4) ◽  
pp. 891-895 ◽  
Author(s):  
J. M. Rodriguez-Mellado ◽  
J. L. Avila ◽  
J. J. Ruiz

A study on the electrochemical reduction of acetylbenzoyl on a mercury electrode has been carried out in the pH range 0–9 in buffered aqueous solutions. The effect of pH, drop time, temperature, and acetylbenzoyl concentration on polarographic and kinetic parameters has been studied. The occurrence of adsorption phenomena is inferred from the recordings of C–E curves. Tafel slopes and reaction orders have been obtained at potentials corresponding to the foot of the wave. On the basis of these experimental data, a reaction mechanism is proposed for the zone of potentials where Tafel's law is satisfied.


Author(s):  
Silvia Mena ◽  
Esteve Ribas ◽  
Clara Richard ◽  
Iluminada Gallardo ◽  
Jordi Faraudo ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document