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Preparation and characterization of uniform submicrometer metal niobate particles: Part II. Magnesium niobate and potassium niobate

Published online by Cambridge University Press:  31 January 2011

Myung Jin Kim  and
Egon Matijević
Myung Jin Kim*
Affiliation:
Departments of Chemistry and Chemical Engineering, Clarkson University, Potsdam, New York 13699-5814
Egon Matijević
Affiliation:
Departments of Chemistry and Chemical Engineering, Clarkson University, Potsdam, New York 13699-5814
*
a)Part of a Ph.D. Thesis by M. J. Kim.
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Abstract

Amorphous spherical particles of magnesium and potassium niobates were produced by homogeneous precipitation in solutions of magnesium and potassium salts, respectively, in the presence of polymeric niobium oxo-hydroxide ions. At pH 9 solids of definitive compositions were achieved and converted to crystalline powders of MgNb2O6 and KNbO3 on calcination. Chemical mechanisms for the formation and transformation of such colloidal particles are offered.

Type
Articles
Information
Journal of Materials Research , Volume 7 , Issue 4 , April 1992 , pp. 912 - 918
Copyright
Copyright © Materials Research Society 1992

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