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3020392 
Journal Article 
Alkaline KMnO4 Oxidation of Reducing Sugars in Microemulsions: Inhibition Effect of Surfactants 
Tripathi, R; Upadhyay, SK 
2015 
1 
Kinetics and Catalysis
ISSN: 0023-1584
EISSN: 1608-3210 
Maik Nauka Publishing / Springer SBM 
56 
3 
261-266 
English 
WOS:000356369200002 
The kinetics of oxidation of reducing sugars viz. D-glucose and D-fructose by alkaline KMnO4 in microemulsion media was investigated. The aqueous, cationic microemulsion was prepared from cetyl trimethyl ammonium bromide, n-butanol, n-hexane and water, whereas n-decane, aerosol-OT and water were used to prepare the anionic microemulsion. The order of reaction in oxidant was always found to be unity, while that in substrate and alkali was decreased from unity to zero at higher concentrations substrate and alkalirespectively. On decreasing [H2O]/[Surfactant] ratio (increasing surfactant content) in microemulsion, the observed rates constants of oxidation (k(obs)) were decreased. The inhibition effect on the rate of oxidation was greater in cationic microemulsion. A mechanism consistent with kinetic data is proposed.