Asian Journal of Research In Chemistry
  • Year: 2012
  • Volume: 5
  • Issue: 10

Kinetics and Mechanism of Lanthanum (III) Catalysed Oxidation of D-ribose by Cerium(IV) in Aqueous Acidic Medium

  • Author:
  • Manoj Kumar Ghosh, Surendra K. Rajput
  • Total Page Count: 7
  • Page Number: 1271 to 1277

Department of Chemistry, Govt. Nagarjuna P.G. College of Science, Raipur, 492010 (C.G.), India

*Corresponding Author E-mail: mkghosh01@yahoo.co.in

Online published on 7 February, 2013.

Abstract

A kinetics investigation of catalysed oxidation of D-(+) ribose by cerium(IV) have been studied in acidic medium in the temperature range 308–333 K. The reaction has been found to be first order with respect to D-(+) ribose in the presence of La(III) catalysed. The rate follow first order kinetics in La(III) catalysed oxidation reaction. The effect of [HSO4] has also been observed. The 1:2 stoichiometry is observed in the oxidation. From the effect of temperature on the rate of reaction, the Arrhenius equation and various activation parameters have been computed. A suitable mechanism has been proposed and a rate law explaining the experimental observations is derived.

Keywords

Kinetics, Catalysed, D-(+) ribose, Cerium (IV) and Lathanum(III)