Preparative Inorganic Chemistry
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ChemInform Abstract: Formation of LnxNiy (Ln: La, Ce, Pr or Nd) Compounds by Calciothermic Reduction of La2O3, CeO2, Pr6O11 and Nd2O3.
First published: March 12, 1996
Abstract
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ChemInform Abstract
LnNi5 (Ln: La, Ce, Pr, Nd) powders are prepared from the corresponding oxide and Ni by a diffusion process in the temp. range 1123-1323 K using Ca as reductant. XRD and SEM results indicate that the formation of LnNi5 compounds proceeds via an indirect substitution reaction CaxNiy + Ln = LnxNiy + Ca, which results in an increased formation rate.
