Synthesis and comparative studies of xerogels, aerogels, and powders based on the ZrO2–Y2O3–СeO2 system

Synthesis and comparative studies of xerogels, aerogels, and powders based on the... The technology of liquid-phase synthesis of mesoporous xerogels and aerogels based on ZrO2–Y2O3–CeO2 is developed. Xerogels are obtained by the coprecipitation of hydroxides, while aerogels are obtained in accordance with the sol–gel technology: the average pore size is 1.5–17.2 nm and the specific surface area is 120–878 m2/g. Aerogels are characterized by a high degree of porosity: the pore volume attains 1–4 cm3/g. Based on precursor xerogels, nanopowders of a tetragonal solid solution of the (ZrО2)0.92(Y2О3)0.03(CeО2)0.05 composition with a particle size of 5–9 nm and S spec = 74 m2/g were fabricated. Due to the high values of their specific surface area, the synthesized xerogels and aerogels are promising as sorbents, catalysts, or catalyst supports. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Glass Physics and Chemistry Springer Journals

Synthesis and comparative studies of xerogels, aerogels, and powders based on the ZrO2–Y2O3–СeO2 system

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Publisher
Pleiades Publishing
Copyright
Copyright © 2017 by Pleiades Publishing, Ltd.
Subject
Materials Science; Ceramics, Glass, Composites, Natural Materials; Characterization and Evaluation of Materials; Materials Science, general; Physical Chemistry
ISSN
1087-6596
eISSN
1608-313X
D.O.I.
10.1134/S108765961704006X
Publisher site
See Article on Publisher Site

Abstract

The technology of liquid-phase synthesis of mesoporous xerogels and aerogels based on ZrO2–Y2O3–CeO2 is developed. Xerogels are obtained by the coprecipitation of hydroxides, while aerogels are obtained in accordance with the sol–gel technology: the average pore size is 1.5–17.2 nm and the specific surface area is 120–878 m2/g. Aerogels are characterized by a high degree of porosity: the pore volume attains 1–4 cm3/g. Based on precursor xerogels, nanopowders of a tetragonal solid solution of the (ZrО2)0.92(Y2О3)0.03(CeО2)0.05 composition with a particle size of 5–9 nm and S spec = 74 m2/g were fabricated. Due to the high values of their specific surface area, the synthesized xerogels and aerogels are promising as sorbents, catalysts, or catalyst supports.

Journal

Glass Physics and ChemistrySpringer Journals

Published: Aug 24, 2017

References

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