Synthesis of complex metal oxides using hydroxide, cyanide, and nitrate solid solution precursors

Vidyasagar, K and Gopalakrishnan, J and Rao, CNR (1985) Synthesis of complex metal oxides using hydroxide, cyanide, and nitrate solid solution precursors. In: Journal of Solid State Chemistry, 58 (1). pp. 29-37.

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Abstract

Precursor solid solutions provide convenient routes for preparing complex metal oxides. Hydroxide solid solutions of the general formula $Ln_{1-x}M_x(OH)_3$ (where Ln = La or Nd and M = Al, Cr, Fe, Co, or Ni) and $La_{1-x-y}M'_xM″_y(OH)_3$ (where M′ = Ni and M″ = Co or Cu) crystallize in the rare earth trihydroxide structure and can be decomposed at relatively low temperatures to yield complex metal oxides. Several oxides of the type $LaNiO_3$, $NdNiO_3$, $LaNi_{1-x}Co_xO_3$, and $LaNi_{1-x}Cu_xO_3$ have been prepared by the hydroxide precursor route. Thermal decomposition of cyanide precursors of the type $Ln[M_{1-x}M′_x(CN)_6]$· $5H_2O$ and $Ln_{1-x}Ln′_x[M(CN)_6]$· $5H_2$O yields the quaternary oxides which are not readily made by ceramic methods. Nitrate solid solution precursors of the type $Ba_{1-x}Pb_x(NO_3)_2$, $Sr_{1-x}Pb_x(NO_3)_2$, and $BaSrPb(NO_3)_6$ have been used for preparing several interesting oxides such as $BaPbO_3$, $Ba_2PbO_4$, and $BaSrPbO_4$.

Item Type:	Journal Article
Publication:	Journal of Solid State Chemistry
Publisher:	Elsevier BV
Additional Information:	Copyright of this article belongs to Elsevier BV.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	10 Jul 2008
Last Modified:	19 Sep 2010 04:47
URI:	http://eprints.iisc.ac.in/id/eprint/14899

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