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J Colloid Interface Sci. 2001 Jan 15;233(2):197-204. doi: 10.1006/jcis.2000.7246.

Base-Catalyzed Oxidation of Carboxymethyl-cellulose Polymer by Permanganate.

Journal of colloid and interface science

Shaker

Affiliations

  1. Chemistry Department, Faculty of Science, South Valley University, Sohag, Egypt

PMID: 11121266 DOI: 10.1006/jcis.2000.7246

Abstract

The kinetics and mechanism of the disproportionation of MnO(4)(-) via [CMC-MnVIO(4)(2-)] intermediate complex formation during the oxidation of carboxymethyl-cellulose (CMC) polysaccharide have been investigated spectrophotometrically at pH>/=12 and various temperatures (15-35 degrees C). The rate law was suggested as rate=k(obs)[MnO(4)(-)]. Kinetic and spectrophotometric measurements revealed the base-catalyzed formation of manganate(VI) transient species. A mechanism was postulated consistent with the experimental data. Copyright 2001 Academic Press.

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