How to Tune the Alumina Aerogels Structure by the Variation of a Supercritical Solvent. Evolution of the Structure during Heat Treatment
Тип публикации: Journal Article
Дата публикации: 2016-02-09
scimago Q1
wos Q3
БС1
SJR: 0.914
CiteScore: 6.2
Impact factor: 3.2
ISSN: 19327447, 19327455
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Physical and Theoretical Chemistry
General Energy
Краткое описание
Alumina aerogels are obtained by supercritical drying (SCD) in four solvents of different chemical natures. The phase transformations, the morphological changes, and the thermal stability during heat treatment in the range 20–1200 °C are investigated. The as-prepared samples obtained by SCD in MeOH are identified as crystalline aluminum hydroxide methoxide, and those obtained by SCD in i-PrOH consist of alumina with small size of crystallite grains. In contrast to alcohol-dried samples, the initial ether-dried aerogels are amorphous (as determined by X-ray diffraction). Calcination of the samples causes their crystallization and recrystallization. After heat treatment at 1200 °C, all samples consisted only of the α-alumina phase. TEM study demonstrated that the nature of the solvent used for SCD significantly affects the morphology of the aerogels. Low-temperature nitrogen adsorption investigation of the aerogel samples confirms the influence of the nature of supercritical fluid (SCF) on the structure of ...
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Lermontov S. A. et al. How to Tune the Alumina Aerogels Structure by the Variation of a Supercritical Solvent. Evolution of the Structure during Heat Treatment // Journal of Physical Chemistry C. 2016. Vol. 120. No. 6. pp. 3319-3325.
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Lermontov S. A., Lermontov S., Straumal E. A., Mazilkin A., Zver'kova I. I., Baranchikov A. E., Baranchikov A. E., Straumal B., STRAUMAL B., Ivanov V. V., Ivanov V. How to Tune the Alumina Aerogels Structure by the Variation of a Supercritical Solvent. Evolution of the Structure during Heat Treatment // Journal of Physical Chemistry C. 2016. Vol. 120. No. 6. pp. 3319-3325.
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TY - JOUR
DO - 10.1021/acs.jpcc.5b10461
UR - https://pubs.acs.org/doi/10.1021/acs.jpcc.5b10461
TI - How to Tune the Alumina Aerogels Structure by the Variation of a Supercritical Solvent. Evolution of the Structure during Heat Treatment
T2 - Journal of Physical Chemistry C
AU - Lermontov, Sergey A
AU - Lermontov, S.A.
AU - Straumal, E A
AU - Mazilkin, A.A
AU - Zver'kova, I. I.
AU - Baranchikov, Alexander E
AU - Baranchikov, A E
AU - Straumal, Boris
AU - STRAUMAL, B.B.
AU - Ivanov, V. V.
AU - Ivanov, V.K.
PY - 2016
DA - 2016/02/09
PB - American Chemical Society (ACS)
SP - 3319-3325
IS - 6
VL - 120
SN - 1932-7447
SN - 1932-7455
ER -
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@article{2016_Lermontov,
author = {Sergey A Lermontov and S.A. Lermontov and E A Straumal and A.A Mazilkin and I. I. Zver'kova and Alexander E Baranchikov and A E Baranchikov and Boris Straumal and B.B. STRAUMAL and V. V. Ivanov and V.K. Ivanov},
title = {How to Tune the Alumina Aerogels Structure by the Variation of a Supercritical Solvent. Evolution of the Structure during Heat Treatment},
journal = {Journal of Physical Chemistry C},
year = {2016},
volume = {120},
publisher = {American Chemical Society (ACS)},
month = {feb},
url = {https://pubs.acs.org/doi/10.1021/acs.jpcc.5b10461},
number = {6},
pages = {3319--3325},
doi = {10.1021/acs.jpcc.5b10461}
}
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Lermontov, Sergey A., et al. “How to Tune the Alumina Aerogels Structure by the Variation of a Supercritical Solvent. Evolution of the Structure during Heat Treatment.” Journal of Physical Chemistry C, vol. 120, no. 6, Feb. 2016, pp. 3319-3325. https://pubs.acs.org/doi/10.1021/acs.jpcc.5b10461.