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Kinetics and Mechanism of Electron Transfer to Heptavalent Manganese by DL-Aspartic Acid in Alkaline Aqueous and Micellar Media
Joint Authors
Mohanty, P.
Badamali, S. K.
Patnaik, A. K.
Sanjana, M.
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-11-19
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
The kinetics and mechanism of the electron transfer of dl-Aspartic acid (Asp) by Mn (VII) in alkaline medium has been studied spectrophotometrically over the range 2.0≤103[Asp] ≤5.0 mol dm−3; 0.01≤[OH-]≤0.05 mol dm−3; 298≤T≤318 K and I=0.05 mol dm−3 (KNO3).
The reaction exhibits first-order dependence in [MnO4-]T but shows fractional-order dependence in both [Asp]T and [OH−]T.
The reaction was studied in the presence of sodium dodecyl sulfate (SDS); an increase in the rate with the increase in the micellar concentration was observed.
The products were characterized by spectral analysis.
A mechanism involving free radicals is proposed.
Asp binds MnO4- to form a complex that subsequently decomposes to products.
Activation parameters ΔH° (kJ mol−1) and ΔS° (JK−1 mol−1) for the reaction are 5.62 ± 0.35 and −227.65 ± 1.1, respectively.
The negative value of ΔS° indicates that oxidation occurs via inner sphere mechanism.
American Psychological Association (APA)
Sanjana, M.& Patnaik, A. K.& Badamali, S. K.& Mohanty, P.. 2012. Kinetics and Mechanism of Electron Transfer to Heptavalent Manganese by DL-Aspartic Acid in Alkaline Aqueous and Micellar Media. Journal of Chemistry،Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-493547
Modern Language Association (MLA)
Sanjana, M.…[et al.]. Kinetics and Mechanism of Electron Transfer to Heptavalent Manganese by DL-Aspartic Acid in Alkaline Aqueous and Micellar Media. Journal of Chemistry No. 2013 (2013), pp.1-7.
https://search.emarefa.net/detail/BIM-493547
American Medical Association (AMA)
Sanjana, M.& Patnaik, A. K.& Badamali, S. K.& Mohanty, P.. Kinetics and Mechanism of Electron Transfer to Heptavalent Manganese by DL-Aspartic Acid in Alkaline Aqueous and Micellar Media. Journal of Chemistry. 2012. Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-493547
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-493547