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A new solution route to silicates. Part 3: Aqueous sol-gel synthesis of willemite and potassium antimony silicate

Identifieur interne : 001018 ( Main/Exploration ); précédent : 001017; suivant : 001019

A new solution route to silicates. Part 3: Aqueous sol-gel synthesis of willemite and potassium antimony silicate

Auteurs : L. Reynaud [France] ; C. Brouca-Cabarrecq [France] ; A. Mosset [France] ; H. Ahamdane [Maroc]

Source :

RBID : ISTEX:807F640A159A59D977161910B6DE14B6AC3190E0

Abstract

Willemite, α-Zn2SiO4, and KSbOSiO4 (KSS) were prepared by an aqueous sol-gel process, starting from a H2Si2O5 solution as silicon source. Willemite was obtained free from impurities, in a teflon-lined bomb at 473 K under autogenous pressure. In the case of KSS, the same procedure results in a clear solution which gives, by evaporation at room temperature, an amorphous gel. Orthorhombic KSS crystallizes from this gel at 1273 K.

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DOI: 10.1016/0025-5408(96)00097-9


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