Jump to main content
Jump to site search

Issue 12, 2012
Previous Article Next Article

Oxidation of xylitol by a silver(III) periodate complex in the presence of osmium(VIII) as a homogeneous catalyst

Author affiliations

Abstract

The kinetics of the osmium (Os(VIII)) catalyzed oxidation of xylitol (XYL) by a silver(III) periodate complex (diperiodatoargentate(III)) (DPA) in an aqueous alkaline medium at 298 K and at a constant ionic strength of 0.06 mol dm−3 was studied spectrophotometrically. The reaction between DPA and xylitol in an alkaline medium exhibits 1 : 2 stoichiometry (XYL : DPA). The reaction is of first order in [Os(VIII)] and [DPA] and has a negative fractional order in [IO4]. It is apparent that it has less than the unit order in [XYL] and [OH] under the experimental conditions. The main oxidation product was identified as 2,3,4,5-tetrahydroxypentanoic acid by FT-IR and LC-MS spectral studies. A probable mechanism was proposed and discussed. The activation parameters with respect to the slow step of the mechanism were computed and discussed and thermodynamic quantities were also calculated. The active species of the catalyst and oxidant have been identified.

Graphical abstract: Oxidation of xylitol by a silver(iii) periodate complex in the presence of osmium(viii) as a homogeneous catalyst

Back to tab navigation

Publication details

The article was received on 21 May 2012, accepted on 11 Aug 2012 and first published on 14 Aug 2012


Article type: Paper
DOI: 10.1039/C2CY20336G
Citation: Catal. Sci. Technol., 2012,2, 2549-2557
  •   Request permissions

    Oxidation of xylitol by a silver(III) periodate complex in the presence of osmium(VIII) as a homogeneous catalyst

    J. I. Gowda, S. R. Sataraddi and S. T. Nandibewoor, Catal. Sci. Technol., 2012, 2, 2549
    DOI: 10.1039/C2CY20336G

Search articles by author

Spotlight

Advertisements