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Acid-base, electron-donating and magnetic properties of Nd2O3 and its mixed oxides with alumina catalysts

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Abstract

The electron donor properties of Nd2O3 activated at 300, 500 and 800°C were investigated through studies on the adsorption of electron acceptors of various electron affinities — 7, 7, 8, 8-tetracyanoquinodimethane (2.84 eV), 2, 3, 5, 6-tetrachloro-1, 4-benzoquinone (2.40 eV), p-dinitrobenzene (1.77 eV), and m-dinitrobenzene (1.26 eV) in solvents acetonitrile and 1, 4-dioxan. The extent of electron transfer during adsorption has been found from magnetic measurements and electronic spectral data. The corresponding data on mixed oxides of neodymium and aluminium are reported for various compositions. The acid-base properties of catalysts were also determined using a set of Hammett indicators.

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  1. Department of Applied Chemistry, Cochin University of Science and Technology, 682 022, Cochin, India

    S. Sugunan & G. Devika Rani

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  1. S. Sugunan
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  2. G. Devika Rani
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Sugunan, S., Rani, G.D. Acid-base, electron-donating and magnetic properties of Nd2O3 and its mixed oxides with alumina catalysts. Journal of Materials Science 28, 4811–4815 (1993). https://doi.org/10.1007/BF00414276

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