Sodium dodecylsulphate-catalyzed hetero-aromatic nitrogen base-promoted chromium(VI) oxidation of 2-propenol to 2-propenal in aqueous media

Sodium dodecylsulphate-catalyzed hetero-aromatic nitrogen base-promoted chromium(VI) oxidation of... Res Chem Intermed (2015) 41:10151–10168 DOI 10.1007/s11164-015-2019-0 Sodium dodecylsulphate-catalyzed hetero-aromatic nitrogen base-promoted chromium(VI) oxidation of 2-propenol to 2-propenal in aqueous media 1 1 1 • • • Pintu Sar Aniruddha Ghosh Susanta Malik Bidyut Saha Received: 23 December 2014 / Accepted: 13 March 2015 / Published online: 18 April 2015 Springer Science+Business Media Dordrecht 2015 Abstract A kinetic study of homogeneously micelle-catalyzed, hetero-aromatic N- base (2-picolinic acid, 2,2 -bipyridine and 1,10-phenanthroline)-promoted oxidation of 2-propenol by chromium(VI) in sulfuric acid medium was carried out at 303 K. The pseudo first-order rate constant (k ) of the oxidation reaction is directly proportional to obs ? ? [H ] and [promoters], which indicates that the reaction is first order with respect to H and promoters. The reaction was conducted at four different temperatures from which the activation parameters were calculated. Proton nuclear magnetic resonance ( H- NMR) studies were performed to detect the location of reactant molecules in nanometer- sized micelles. From the observed kinetic results, a suitable mechanism consistent with the rate law has been proposed. The micelles produced a catalytic effect in the entire range of sodium dodecylsulphate (SDS) concentrations used, and the effect is explained by pseudo-phase ion exchange. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Sodium dodecylsulphate-catalyzed hetero-aromatic nitrogen base-promoted chromium(VI) oxidation of 2-propenol to 2-propenal in aqueous media

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Publisher
Springer Netherlands
Copyright
Copyright © 2015 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-015-2019-0
Publisher site
See Article on Publisher Site

Abstract

Res Chem Intermed (2015) 41:10151–10168 DOI 10.1007/s11164-015-2019-0 Sodium dodecylsulphate-catalyzed hetero-aromatic nitrogen base-promoted chromium(VI) oxidation of 2-propenol to 2-propenal in aqueous media 1 1 1 • • • Pintu Sar Aniruddha Ghosh Susanta Malik Bidyut Saha Received: 23 December 2014 / Accepted: 13 March 2015 / Published online: 18 April 2015 Springer Science+Business Media Dordrecht 2015 Abstract A kinetic study of homogeneously micelle-catalyzed, hetero-aromatic N- base (2-picolinic acid, 2,2 -bipyridine and 1,10-phenanthroline)-promoted oxidation of 2-propenol by chromium(VI) in sulfuric acid medium was carried out at 303 K. The pseudo first-order rate constant (k ) of the oxidation reaction is directly proportional to obs ? ? [H ] and [promoters], which indicates that the reaction is first order with respect to H and promoters. The reaction was conducted at four different temperatures from which the activation parameters were calculated. Proton nuclear magnetic resonance ( H- NMR) studies were performed to detect the location of reactant molecules in nanometer- sized micelles. From the observed kinetic results, a suitable mechanism consistent with the rate law has been proposed. The micelles produced a catalytic effect in the entire range of sodium dodecylsulphate (SDS) concentrations used, and the effect is explained by pseudo-phase ion exchange.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Apr 18, 2015

References

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