Rare earth trisoxalatocobaltates(III) a precursor for rare earth cobaltites(III)

Nag, K. ; Roy, Ajoy (1976) Rare earth trisoxalatocobaltates(III) a precursor for rare earth cobaltites(III) Thermochimica Acta, 17 (2). pp. 247-251. ISSN 0040-6031

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/004060...

Related URL: http://dx.doi.org/10.1016/0040-6031(76)85031-9

Abstract

Rare earth cobalties, LnCoO3, can be conveniently prepared by the thermal decomposition of the precursor LnCo(C2O4)3·nH2O (La, Ce, n=9; Pr, Nd, n=8). CeCo(C2O4)3·8H2O, unlike the other oxalato compounds thermally decompose to a mixture of CeO2 and Co3O4. Although LnCoO3are formed from the precursors at a temperature lower than 800°C, thermal analysis of a mixture of La2(C2O4)3·10H2O and CoC2O4·2H2O at 900°C shows the residue containing mainly La2O3 and Co3O4 with a small amount of LaCoO3.

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