Enhancement of the OER Kinetics of the Less-Explored α-MnO2 via Nickel Doping Approaches in Alkaline Medium

Author(s):  
Krishnendu Bera ◽  
Arun Karmakar ◽  
Kannimuthu Karthick ◽  
Selvasundarasekar Sam Sankar ◽  
Sangeetha Kumaravel ◽  
...  
AIChE Journal ◽  
1988 ◽  
Vol 34 (5) ◽  
pp. 865-869 ◽  
Author(s):  
J. C. Burillo ◽  
Francisco Rodríguez ◽  
L. F. Adrados ◽  
J. F. Tijero

1981 ◽  
Vol 6 (5) ◽  
pp. 264-266 ◽  
Author(s):  
K. K. Sen Gupta ◽  
Surajit Maiti ◽  
Pratik K. Sen

2001 ◽  
Vol 79 (12) ◽  
pp. 1926-1933 ◽  
Author(s):  
Dinesh C Bilehal ◽  
Raviraj M Kulkarni ◽  
Sharanappa T Nandibewoor

The kinetics of ruthenium(III) catalyzed oxidation of L-valine by permanganate in alkaline medium at a constant ionic strength has been studied spectrophotometrically. The reaction between permanganate and L-valine in alkaline medium exhibits 2:1 stoichiometry (KMnO4:L-valine). The reaction shows first-order dependence on the concentration of permanganate and ruthenium(III) and less than unit-order dependence on the concentrations of L-valine and alkali. The reaction rate increases both with an increase in ionic strength and a decrease in solvent polarity of the medium. Initial addition of reaction products did not significantly affect the rate. A mechanism involving the formation of a complex between catalyst and substrate has been proposed. The activation parameters were computed with respect to the slowest step of the mechanism.Key words: oxidation, L-valine, catalysis, ruthenium(III), kinetics.


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