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A kinetic study of the 1, 10-phenanthroline-catalysed iron(III) oxidation of epimeric aldo-, and D-, and L-ketohexoses

✍ Scribed by Kolla N. Reddy; Mereddy K. R. Reddy; Kamatala C. Rajanna; Pondichery K. Saiprakash

Book ID: 104636429
Publisher: Springer
Year: 1996
Tongue: English
Weight: 441 KB
Volume: 21
Category: Article
ISSN: 0340-4285
DOI: 10.1007/bf00136538

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✦ Synopsis

Fe uI in H2SO~ medium does not oxidize sugars even at the reflux temperature, however, the reaction is catalysed by trace amounts of 1,10-phenanthroline (phen). A kinetic study shows that the oxidation rate increases as [phen] increases and exhibits a fractional order dependence upon [phen]. The orders with respect to [Fe Ill] and [carbohydrate] are unity. The oxidation rate decreases as [HSO~-] and [H2SO4] increase. A plausible mechanism is proposed involving participation of an [FeIII-phen] precursor and sugar in the rate-determining step,

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