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Mesoporous aerogel-like Al-Si oxides obtained via supercritical antisolvent precipitation of alumina and silica sols. / Nesterov, Nikolai S.; Shalygin, Anton S.; Pakharukova, Vera P. et al.

In: Journal of Supercritical Fluids, Vol. 149, 01.07.2019, p. 110-119.

Research output: Contribution to journal › Article › peer-review

Harvard

Nesterov, NS, Shalygin, AS, Pakharukova, VP, Glazneva, TS & Martyanov, ON 2019, 'Mesoporous aerogel-like Al-Si oxides obtained via supercritical antisolvent precipitation of alumina and silica sols', Journal of Supercritical Fluids, vol. 149, pp. 110-119. https://doi.org/10.1016/j.supflu.2019.03.014

APA

Nesterov, N. S., Shalygin, A. S., Pakharukova, V. P., Glazneva, T. S., & Martyanov, O. N. (2019). Mesoporous aerogel-like Al-Si oxides obtained via supercritical antisolvent precipitation of alumina and silica sols. Journal of Supercritical Fluids, 149, 110-119. https://doi.org/10.1016/j.supflu.2019.03.014

Vancouver

Nesterov NS, Shalygin AS, Pakharukova VP, Glazneva TS, Martyanov ON. Mesoporous aerogel-like Al-Si oxides obtained via supercritical antisolvent precipitation of alumina and silica sols. Journal of Supercritical Fluids. 2019 Jul 1;149:110-119. doi: 10.1016/j.supflu.2019.03.014

Author

Nesterov, Nikolai S. ; Shalygin, Anton S. ; Pakharukova, Vera P. et al. / Mesoporous aerogel-like Al-Si oxides obtained via supercritical antisolvent precipitation of alumina and silica sols. In: Journal of Supercritical Fluids. 2019 ; Vol. 149. pp. 110-119.

BibTeX

@article{4708dcc7961a4451a453e6d697f96c8f,
title = "Mesoporous aerogel-like Al-Si oxides obtained via supercritical antisolvent precipitation of alumina and silica sols",
abstract = " A method of alumina and silica sols precipitation in supercritical CO 2 has been developed for the first time to prepare alumina and silica doped alumina. The silicon content of samples is varied within the range from 0 to 30 mol. %. The approach suggested can be considered as a development of supercritical antisolvent (SAS) method that is widely used to prepare powders from solutions but not sols. The alumina and silicon-doped alumina obtained are shown to be mesoporous materials with narrow size distribution in the range of 3–5 nm. The high-temperature treatment of the sample containing 10 mol. % of Si results in the formation of γ-Al 2 O 3 phase followed by its transition into the δ-Al 2 O 3 phase at 1200 °C without α-Al 2 O 3 phase formation. It is demonstrated that the gradual introduction of silica into the alumina allows one to fine-tune the strength and amount of acid sites existing in oxides. ",
keywords = "Acidity, Alumina-silica, Mesoporous alumina, SAS, Sols, Supercritical antisolvent, FLUIDS, CO2, NANO-PARTICLES, BASICITY, NANOPARTICLES, HYDROGEN, GEORGEITE, FISCHER-TROPSCH CATALYSTS, SURFACE, ACIDITY",
author = "Nesterov, {Nikolai S.} and Shalygin, {Anton S.} and Pakharukova, {Vera P.} and Glazneva, {Tatyana S.} and Martyanov, {Oleg N.}",
note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",
year = "2019",
month = jul,
day = "1",
doi = "10.1016/j.supflu.2019.03.014",
language = "English",
volume = "149",
pages = "110--119",
journal = "Journal of Supercritical Fluids",
issn = "0896-8446",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Mesoporous aerogel-like Al-Si oxides obtained via supercritical antisolvent precipitation of alumina and silica sols

AU - Nesterov, Nikolai S.

AU - Shalygin, Anton S.

AU - Pakharukova, Vera P.

AU - Glazneva, Tatyana S.

AU - Martyanov, Oleg N.

N1 - Publisher Copyright: © 2019 Elsevier B.V.

PY - 2019/7/1

Y1 - 2019/7/1

N2 - A method of alumina and silica sols precipitation in supercritical CO 2 has been developed for the first time to prepare alumina and silica doped alumina. The silicon content of samples is varied within the range from 0 to 30 mol. %. The approach suggested can be considered as a development of supercritical antisolvent (SAS) method that is widely used to prepare powders from solutions but not sols. The alumina and silicon-doped alumina obtained are shown to be mesoporous materials with narrow size distribution in the range of 3–5 nm. The high-temperature treatment of the sample containing 10 mol. % of Si results in the formation of γ-Al 2 O 3 phase followed by its transition into the δ-Al 2 O 3 phase at 1200 °C without α-Al 2 O 3 phase formation. It is demonstrated that the gradual introduction of silica into the alumina allows one to fine-tune the strength and amount of acid sites existing in oxides.

AB - A method of alumina and silica sols precipitation in supercritical CO 2 has been developed for the first time to prepare alumina and silica doped alumina. The silicon content of samples is varied within the range from 0 to 30 mol. %. The approach suggested can be considered as a development of supercritical antisolvent (SAS) method that is widely used to prepare powders from solutions but not sols. The alumina and silicon-doped alumina obtained are shown to be mesoporous materials with narrow size distribution in the range of 3–5 nm. The high-temperature treatment of the sample containing 10 mol. % of Si results in the formation of γ-Al 2 O 3 phase followed by its transition into the δ-Al 2 O 3 phase at 1200 °C without α-Al 2 O 3 phase formation. It is demonstrated that the gradual introduction of silica into the alumina allows one to fine-tune the strength and amount of acid sites existing in oxides.

KW - Acidity

KW - Alumina-silica

KW - Mesoporous alumina

KW - SAS

KW - Sols

KW - Supercritical antisolvent

KW - FLUIDS

KW - CO2

KW - NANO-PARTICLES

KW - BASICITY

KW - NANOPARTICLES

KW - HYDROGEN

KW - GEORGEITE

KW - FISCHER-TROPSCH CATALYSTS

KW - SURFACE

KW - ACIDITY

UR - http://www.scopus.com/inward/record.url?scp=85064166327&partnerID=8YFLogxK

U2 - 10.1016/j.supflu.2019.03.014

DO - 10.1016/j.supflu.2019.03.014

M3 - Article

AN - SCOPUS:85064166327

VL - 149

SP - 110

EP - 119

JO - Journal of Supercritical Fluids

JF - Journal of Supercritical Fluids

SN - 0896-8446

ER -

ID: 19354536