45.  Electrochemically Synthesis of the Pirazine-2,3-Dicarboxylic Acid. Cyclic Voltammetry Studies on Cooper Electrode

Authors: I. Taranu, I. Popa, A. Dragos, N. Vlatanescu, D. Buzatu


Abstract:

The previous studies shows that the KMnO4 regeneration used in chemical oxidation of chinoxaline to form the pyrazine-2,3-dicarboxylic acid is possible on platinum in chinoxaline absence or his presence and on nickel electrode. The purpose of this paper is investigation of the KMnO4 regeneration process on copper electrode. The studies was made by cyclic voltammetry at a concentrations of support electrolyte (KOH ) of about 5 to 10%, at 25-40ºC temperature, KMnO4 concentration until 6·10-2 M and maximum concentration of quinoxaline until 2.61·10-2 M in electrolite solution. On copper electrode it’s possible the process of oxidation of Mn6+ to Mn7+. Anodic regeneration of Mn7+ is favoured by rise of : KOH concentration, temperature, Mn7+ and Mn6+ concentration, quinoxaline.


Keywords: electrochemistry, cyclic voltammetry, quinoxaline, pirazine-2,3-dicarboxilic acid, cooper electrode

PDF Version

 
 
Issues

Articles in Press
Chem. Bull. `POLITEHNICA` Univ. (Timisoara)


2016
Volume 61(75), Issue 2, 2016
Chem. Bull. `POLITEHNICA` Univ. (Timisoara)


2016
Volume 61(75), Issue 1, 2016
Chem. Bull. `POLITEHNICA` Univ. (Timisoara)


2015
Volume 60(74), Issue 2, 2015
Chem. Bull. `POLITEHNICA` Univ. (Timisoara)


2015
Volume 60(74), Issue 1, 2015
Chem. Bull. `POLITEHNICA` Univ. (Timisoara)


2014
Volume 59(73), Issue 2, 2014
Chem. Bull. `POLITEHNICA` Univ. (Timisoara)


2014
Volume 59(73), Issue 1, 2014
Chem. Bull. `POLITEHNICA` Univ. (Timisoara)


2013
Volume 58(72), Issue 2, 2013
Chem. Bull. `POLITEHNICA` Univ. (Timisoara)


2013
Volume 58(72), Issue 1, 2013
Chem. Bull. `POLITEHNICA` Univ. (Timisoara)


2012
Volume 57(71), Issue 2, 2012
Chem. Bull. `POLITEHNICA` Univ. (Timisoara)


2012
Volume 57(71), Issue 1, 2012
Chem. Bull. `POLITEHNICA` Univ. (Timisoara)


2011
Volume 56(70), Issue 2, 2011
Chem. Bull. `POLITEHNICA` Univ. (Timisoara)


2011
Volume 56(70), Issue 1, 2011
Chem. Bull. `POLITEHNICA` Univ. (Timisoara)


2010
Volume 55(69), Issue 2, 2010
Chem. Bull. `POLITEHNICA` Univ. (Timisoara)


2010
Volume 55(69), Issue 1, 2010
Chem. Bull. `POLITEHNICA` Univ. (Timisoara)


2009
Volume 54(68), Issue 2, 2009
Chem. Bull. `POLITEHNICA` Univ. (Timisoara)


2009
Volume 54(68), Issue 1, 2009
Chem. Bull. `POLITEHNICA` Univ. (Timisoara)


2008
Volume 53(67), Issue 1 - 2, 2008
Chem. Bull. `POLITEHNICA` Univ. (Timisoara)


2007
Volume 52(66), Issue 1 - 2, 2007
Chem. Bull. `POLITEHNICA` Univ. (Timisoara)


2006
Volume 51(65), Item 1 - 2, 2006
Chem. Bull. `POLITEHNICA` Univ. (Timisoara)


2005
Volume 50(64), Item 1 - 2, 2005
Chem. Bull. `POLITEHNICA` Univ. (Timisoara)



   
 
 
  © 2024 Industrial Chemistry and Environmental Engineering Faculty