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Cryosol method: A novel powder processing technique based on ion-exchange phenomena

Published online by Cambridge University Press:  31 January 2011

A. A. Vertegel ,
S. V. Kalinin ,
N. N. Oleynikov ,
Yu. G. Metlin  and
Yu. D. Tretyakov
A. A. Vertegel
Affiliation:
Inorganic Chemistry Division, Department of Chemistry, Moscow State University, 119899, Moscow, Russia
S. V. Kalinin
Affiliation:
Inorganic Chemistry Division, Department of Chemistry, Moscow State University, 119899, Moscow, Russia
N. N. Oleynikov
Affiliation:
Inorganic Chemistry Division, Department of Chemistry, Moscow State University, 119899, Moscow, Russia
Yu. G. Metlin
Affiliation:
Inorganic Chemistry Division, Department of Chemistry, Moscow State University, 119899, Moscow, Russia
Yu. D. Tretyakov
Affiliation:
Inorganic Chemistry Division, Department of Chemistry, Moscow State University, 119899, Moscow, Russia
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Abstract

A novel technique has been suggested for synthesis of highly dispersed oxide powders. The method is based on the treatment of aqueous solution of a multivalent metal nitrate (or chloride) by anion-exchange resin in the OH− form. The presented technique yields a stable colloid solution of the corresponding hydroxide with concentration up to 1 M. The subsequent freeze-drying and thermal dehydration results in very fine powder of metal oxide. The individual and multicomponent oxides obtained by the cryosol method were shown to possess unusual properties due to their high dispersity and chemical homogeneity.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 4 , April 1998 , pp. 901 - 904
Copyright
Copyright © Materials Research Society 1998

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References

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