Electrochemical reduction of Eu(III) using a flow-through porous graphite electrode

1992 ◽  
Vol 22 (9) ◽  
pp. 865-871 ◽  
Author(s):  
T. M. Hung ◽  
C. J. Lee
Keyword(s):  
Electrochemical Reduction ◽  
Graphite Electrode ◽  
Porous Graphite ◽  
Flow Through

Chronopotentiometric studies of certain biologically important compounds at tubular graphite electrode

1991 ◽  
Vol 56 (9) ◽  
pp. 1833-1837
Author(s):  
Ram Parkash ◽  
Hari Om Gupta ◽  
Jatinder Dutt
Keyword(s):  
Sulfuric Acid ◽  
Graphite Electrode ◽  
Lone Pair ◽  
Cation Radical ◽  
Phenothiazine Derivatives ◽  
Solution Flow ◽  
Single Wave ◽  
Acidic Solutions ◽  
Flow Through ◽  
Hydrodynamic Systems

The chronopotentiometric studies of certain phenothiazines in hydrodynamic systems at a solution flow-through tubular graphite electrode were carried out in sulfuric acid of different concentrations. A well-defined single wave (involving 2 electrons) in 0.1M H2SO4 and two waves (involving 1 electron each) in 2.0M H2SO4 were observed. Phenothiazines are oxidized trough the formation of a monocation radical by the elimination of one electron from the lone pair of N-atom. The monocation radical is stable in sulfuric acid of a moderate concentration and is unstable in neutral or less acidic solutions. The cation radical undergoes instantaneous hydrolysis yielding sulfoxide, thus presenting an overall two-electron oxidation of the phenothiazine derivatives. The suitability of the chronopotentiometric technique for their determination was established.

Electrochemical reduction of hydrogenated 2-pyrimidones on a graphite electrode

1985 ◽  
Vol 21 (1) ◽  
pp. 95-99 ◽  
Author(s):  
V. P. Kadysh ◽  
Ya. P. Stradyn' ◽  
E. L. Khanina ◽  
G. Ya. Dubur ◽  
D. Kh. Mutsenietse
Keyword(s):  
Electrochemical Reduction ◽  
Graphite Electrode
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