Thermal stability of ZrO2–SiO2 aerogel modified by Fe(III) ion

Thermal stability of ZrO2–SiO2 aerogel modified by Fe(III) ion

ZrO 2 –SiO 2 aerogel modified by Fe(III) ion was prepared and the stability of the samples under high temperature was investigated. The structure and properties of modified aerogels were characterized by N 2 adsorption–desorption, FT-IR, XRD and TEM. The samples still contain a specific surface area...

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Veröffentlicht in:Journal of sol-gel science and technology 2014-12, Vol.72 (3), p.496-501
Hauptverfasser: Xiong, Rui, Li, Xiaolei, Ji, Huiming, Sun, Xiaohong, He, Jian
Format: Artikel
Sprache:eng
Schlagworte:
Aerogels
Ceramics
Chemistry
Chemistry and Materials Science
Colloidal gels. Colloidal sols
Colloidal state and disperse state
Composites
Exact sciences and technology
General and physical chemistry
Glass
High temperature
Inorganic Chemistry
Materials Science
Nanotechnology
Natural Materials
Optical and Electronic Materials
Original Paper
Phase transitions
Porous materials
Silicon dioxide
Thermal stability
Zirconium dioxide
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Zusammenfassung:ZrO 2 –SiO 2 aerogel modified by Fe(III) ion was prepared and the stability of the samples under high temperature was investigated. The structure and properties of modified aerogels were characterized by N 2 adsorption–desorption, FT-IR, XRD and TEM. The samples still contain a specific surface area about 228 m 2 /g after 1,000 °C 0.5 h calcinations. The inhibition of ZrO 2 particle growth is attributed to the Fe(III) ion modified aerogel surface, which strongly retards the ZrO 2 tetragonal phase transformation as well.
ISSN:0928-0707
1573-4846
DOI:10.1007/s10971-014-3464-8