Properties and segregation stability of the composite silica-zirconia xerogels prepared via "acidic" and "basic" precipitation routes
authors Krivtsov, IV; Ilkaeva, MV; Avdin, VV; Zherebtsov, DA
nationality International
journal JOURNAL OF NON-CRYSTALLINE SOLIDS
author keywords Silica-zirconia; Zirconia; Xerogels; Phase segregation; Mixed oxides
keywords SOL-GEL PROCESS; O-ZR BONDS; MESOPOROUS SILICA; BINARY OXIDES; MIXED OXIDES; SIO2-ZRO2; EVOLUTION; POWDERS; CRYSTALLIZATION; DECOMPOSITION
abstract Two series of the composite silica-zirconia xerogels with various SiO2/ZrO2 molar ratios have been prepared by the "acidic" and "basic" precipitation methods. It has been established that the ways of synthesis have significant effect on surface area, morphological and thermal properties of the xerogels. In addition, the segregation processes in dependence on post-synthetic treatment have been examined in the gels with various molar compositions. Optimal molar composition for each synthetic route in terms of the phase segregation stability of the composite SiO2-ZrO2 xerogels has been proposed. (C) 2012 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0022-3093
year published 2013
volume 362
beginning page 95
ending page 100
digital object identifier (doi) 10.1016/j.jnoncrysol.2012.11.011
web of science category Materials Science, Ceramics; Materials Science, Multidisciplinary
subject category Materials Science
unique article identifier WOS:000315935500015
link https://linkinghub.elsevier.com/retrieve/pii/S0022309312006667
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