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Research Article Open access CC BY 3.0

Solid-State Metathetic Synthesis of Phase Pure BaSnO3 and BaZrO3

U. Sujana Kumari, P. Suresh, A. A. V. Prasada Rao

International Research Journal of Pure and Applied Chemistry · pp. 347–356 · Published 2 Aug 2013

10.9734/IRJPAC/2013/4147

Abstract

A simple solid state metathetic  synthesis has been developed for the preparation of BaSnO3 and BaZrO3 making use of BaCl2 along with Na2SnO3 and K2[ZrO(C2O4)2].3H2O as precursors. Phase pure compounds in each case were obtained at lower temperatures than those reported in literature for traditional solid-state synthesis making use of oxides and or carbonates as precursors. Phase identification was done by XRD. FTIR spectra of BaSnO3 and BaZrO3 were studied. In case of BaSnO3, a broad peak observed at 640.36 cm-1 corresponds to the characteristic stretching mode of Sn-O bonds. In case of BaZrO3, the large peak observed around 533 cm-1 is due to Zr-O vibration in the perovskite structure.  Microstructural investigation indicated particle size of the order of µm. Thermal analysis of K2[ZrO(C2O4)2].3H2O indicated the presence of 3 molecules of water and observed weight loss agreed with the formation of BaZrO3 as the final product.  

Solid state metathesis barium stannate barium zirconate

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