Synthesis and comparative studies of xerogels, aerogels, and powders based on the ZrO2–Y2O3–СeO2 system
- Authors: Koval’ko N.Y.1, Kalinina M.V.1, Malkova A.N.2, Lermontov S.A.2, Morozova L.V.1, Polyakova I.G.1, Shilova O.A.1,3
-
Affiliations:
- Grebenshchikov Institute of Silicate Chemistry
- Institute of Physiologically Active Substances
- Ul’yanov (Lenin) St. Petersburg State Electrotechnical University LETI
- Issue: Vol 43, No 4 (2017)
- Pages: 368-375
- Section: Article
- URL: https://journals.rcsi.science/1087-6596/article/view/216105
- DOI: https://doi.org/10.1134/S108765961704006X
- ID: 216105
Cite item
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 Sspec = 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.
About the authors
N. Yu. Koval’ko
Grebenshchikov Institute of Silicate Chemistry
Author for correspondence.
Email: kovalko.n.yu@gmail.com
Russian Federation, St. Petersburg, 199034
M. V. Kalinina
Grebenshchikov Institute of Silicate Chemistry
Email: kovalko.n.yu@gmail.com
Russian Federation, St. Petersburg, 199034
A. N. Malkova
Institute of Physiologically Active Substances
Email: kovalko.n.yu@gmail.com
Russian Federation, Chernogolovka, Moscow oblast, 142432
S. A. Lermontov
Institute of Physiologically Active Substances
Email: kovalko.n.yu@gmail.com
Russian Federation, Chernogolovka, Moscow oblast, 142432
L. V. Morozova
Grebenshchikov Institute of Silicate Chemistry
Email: kovalko.n.yu@gmail.com
Russian Federation, St. Petersburg, 199034
I. G. Polyakova
Grebenshchikov Institute of Silicate Chemistry
Email: kovalko.n.yu@gmail.com
Russian Federation, St. Petersburg, 199034
O. A. Shilova
Grebenshchikov Institute of Silicate Chemistry; Ul’yanov (Lenin) St. Petersburg State Electrotechnical University LETI
Email: kovalko.n.yu@gmail.com
Russian Federation, St. Petersburg, 199034; St. Petersburg, 197022