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Electron donor properties and catalytic activity of manganese ferrospinels

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Abstract

The electron donating properties of manganese ferrospinels of various compositions (MnFe2O4, Mn1.2Fe1.8O4, Mn2FeO4 and Mn2.5Fe0.5O4) were studied from the adsorption of electron acceptors of various electron affinity values from acetonitrile as solvent. The limit of electron transfer from the oxide surface is from 1.77 to 2.40 eV in terms of the electron affinity of the electron acceptor. The data have been correlated with the catalytic activity of these oxides towards autoxidation of sulfites. Both weak and strong electron donor sites catalyze the reaction.

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Authors and Affiliations

  1. Department of Applied Chemistry, The Cochin University of Science and Technology, 682022, Kochi, India

    S. Sugunan, D. John, N. K. Renuka, M. Varghese, K. Sreekumar & C. G. Ramankutty

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  1. S. Sugunan
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  2. D. John
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  3. N. K. Renuka
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  4. M. Varghese
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  5. K. Sreekumar
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  6. C. G. Ramankutty
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Sugunan, S., John, D., Renuka, N.K. et al. Electron donor properties and catalytic activity of manganese ferrospinels. React Kinet Catal Lett 66, 39–45 (1999). https://doi.org/10.1007/BF02475739

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  • DOI: https://doi.org/10.1007/BF02475739

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