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Kinetics of MnO − 4 oxidation of succinic acid in aqueous solution of cetyltrimethylammonium bromide
Author(s) -
Malik Maqsood Ahmad,
AlNowaiser F. M.,
Ahmad Naushad,
Khan Zaheer
Publication year - 2010
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.20519
Subject(s) - chemistry , bromide , permanganate , aqueous solution , cationic polymerization , micelle , inorganic chemistry , succinic acid , catalysis , pulmonary surfactant , kinetics , electron transfer , photochemistry , organic chemistry , biochemistry , physics , quantum mechanics
The rate of electron transfer from succinic acid to permanganate increases with an increase in the concentration of cationic surfactant, cetyltrimethylammonium bromide (CTAB). The micellar catalysis is attributed to the formation of an ion pair between CTAB subaggregates and reactants as well as an increase in the concentration (solubilization) of both reactants and/or intermediate in the micellar pseudophase. The effects of inorganic salts (MnCl 2 , NaF, NaBr, and NaNO 3 ) have also been studied and discussed. The observed results are discussed in terms of the pseudophase model of the micelles proposed by Menger and Portony. Mechanisms consistent with the observed kinetic data have been proposed. © 2010 Wiley Periodicals, Inc. Int J Chem Kinet 42: 704–712, 2010