Kinetic, Mechanistic, and Thermodynamic Studies for Oxidation of L-Alanine by Alkaline Sodium Periodate in Presence of Os(VIII) in its Nano Concentration Range as Homogenous Catalyst

DOI: https://doi.org/10.9767/bcrec.13.2.1583.355-364
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Submitted: 11-10-2017
Published: 11-06-2018
Section: Original Research Articles
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The kinetics and mechanism of homogenously Os(VIII) catalysed oxidation of L-alanine (L-ala) by alkaline sodium periodate in temperature range 30 to 45°C have been studied. The involvement of free radicals was observed in the reactions. The oxidation products were acetaldehyde and IO3-, identified by spot test and spectroscopic studies. The stoichiometry between [L-ala]: IO4- is 1:2. The reaction show negligible effect of mercuric acetate and ionic strength of medium. The experimental results show first order in oxidant [NaIO4] and negative effect of [OH-]. The order in [Os(VIII)] as well as L-alanine was unity. A mechanism involving the formation of complex between L-alanine and Os(VIII) was proposed. The reaction constants concerned in the different steps of mechanism were calculated at different temperature. The activation parameters for the slow step of mechanism were computed and discussed. The thermodynamic quantities were also calculated for the reaction. Copyright © 2018 BCREC Group. All rights reserved

Received: 11st October 2017; Revised: 11st February 2018; Accepted: 18th February 2018; Available online: 11st June 2018; Published regularly: 1st August 2018

How to Cite: Gupta, M., Srivastava, A., Srivastava, S. (2018). Kinetic, Mechanistic, and Thermodynamic Studies for Oxidation of L-Alanine by Alkaline Sodium Periodate in Presence of Os(VIII) in its Nano Concentration Range as Homogenous Catalyst. Bulletin of Chemical Reaction Engineering & Catalysis, 13 (2): 355-364 (doi:10.9767/bcrec.13.2.1583.355-364)

 

Keywords

Sodium Periodate; Kinetics; L-alanine; Os(VIII) Catalysis; Oxidation

  1. Madhu Gupta 
    Department of Chemistry University of Lucknow, Lucknow, Uttar Pradesh, India

    Madhu Gupta

    Mphil., Ph.D. (pursuing)

    Research Scholar

    Department Of Chemistry

  2. Amrita Srivastava 
    Department of Chemistry University of Lucknow, Lucknow, Uttar Pradesh, India

    Assistant Professor

    Univesity Of Lucknow

    U.P

    India

  3. Sheila Srivastava 
    Chemical Laboratories Feroze Gandhi College, Raebareli, Uttar Pradesh, India

    Associate Professor & HOD

    Department of Chemistry

    University of Lucknow

    Lucknow,U.P.,

    India

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