Preparation and thermal stability of trioxalatocobaltates of bivalent metals KM2+ [Co(C2O4)3]·xH2O |
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Authors: | MG Usha M Subba Rao TR Narayanan Kutty |
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Institution: | Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560 012 India |
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Abstract: | Trioxalatocobaltates of bivalent metals KM2+Co(C2O4)3]·x H2O, with M2+ = Ba, Sr, Ca and Pb, have been prepared, characterized and their thermal behaviour studied. The compounds decompose to yield potassium carbonate, bivalent metal carbonate or oxide and cobalt oxide as final products. The formation of the final products of decomposition is influenced by the surrounding atmosphere. Bivalent metal cobaltites of the types KM2+CoO3 and M2+CoO3—x are not identified among the final products of decomposition. The study brings out the importance of the decomposition mode of the precursor in producing the desired end products. |
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