Ruthenium(III) catalysed oxidation of glycerol by acidified KBrO3: a kinetic study

Author： Srivastava S.   Tripathi H.   Singh K.  

Publisher： Springer Publishing Company

ISSN： 0340-4285

Source： Transition Metal Chemistry, Vol.26, Iss.6, 2001-12, pp. : 727-729

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Abstract

Kinetic investigations on the Ru^III-catalysed oxidation of glycerol by an acidified solution of KBrO_3 in the presence of Hg(OAc)_2 as a scavenger have been carried out in the 30–50 °C range. First order kinetics in the lower KBrO_3 concentration range tended to zero order at higher concentrations. The reaction follows zero order kinetics in glycerol and [H^+]; the order is one with respect to [Ru^III]. An increase in [Cl^−] showed a positive effect, while addition of NaClO_4 has a negligible effect on the reaction rate. Hg(OAc)_2 and D_2O have an insignificant effect on the reaction rate. A suitable mechanism in conformity with the kinetic observations has been proposed and thermodynamic parameters computed.

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