Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Effect of toluene on the formation of nanocrystalline mayenite phase by the sol-gel method. / Ilyina, Ekaterina V.; Kapishnikov, Aleksandr V.; Serkova, Aleksandra N. и др.
в: Journal of Sol-Gel Science and Technology, Том 117, № 1, 6, 03.01.2026.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Effect of toluene on the formation of nanocrystalline mayenite phase by the sol-gel method
AU - Ilyina, Ekaterina V.
AU - Kapishnikov, Aleksandr V.
AU - Serkova, Aleksandra N.
AU - Shuvarakova, Ekaterina I.
AU - Bedilo, Alexander F.
N1 - Ilyina, E.V., Kapishnikov, A.V., Serkova, A.N. et al. Effect of toluene on the formation of nanocrystalline mayenite phase by the sol-gel method. J Sol-Gel Sci Technol 117, 6 (2026). https://doi.org/10.1007/s10971-025-07080-1 This study was supported by the Russian Science Foundation (Project 25-23-00455).
PY - 2026/1/3
Y1 - 2026/1/3
N2 - Calcium aluminate with the mayenite structure (Ca12Al14O33) is of significant interest for use as a catalyst support due to the ability of stabilizing such active particles as O–, O2– or free electrons in the anionic sublattice. We explored the effect of toluene addition on the phase composition and pore structure of aerogels and xerogels with the mayenite stoichiometry with the goal of preparing nanocrystalline mayenite samples with high purity and high surface area. The addition of a two-fold toluene excess relative to alcohol with a five-fold water excess was found to yield samples with predominating mayenite phase and specific surface area ca. 110 m2/g after drying either over a hotplate in the air or in an autoclave followed by calcination in air at 500 °C. Meanwhile, calcium carbonate was the main crystalline phase if the process was carried out in the absence of toluene. The aerogel sample demonstrated excellent thermal stability. After calcination at 900 °C for 6 h it had the surface area of 48 m2/g and 93% of the mayenite phase.
AB - Calcium aluminate with the mayenite structure (Ca12Al14O33) is of significant interest for use as a catalyst support due to the ability of stabilizing such active particles as O–, O2– or free electrons in the anionic sublattice. We explored the effect of toluene addition on the phase composition and pore structure of aerogels and xerogels with the mayenite stoichiometry with the goal of preparing nanocrystalline mayenite samples with high purity and high surface area. The addition of a two-fold toluene excess relative to alcohol with a five-fold water excess was found to yield samples with predominating mayenite phase and specific surface area ca. 110 m2/g after drying either over a hotplate in the air or in an autoclave followed by calcination in air at 500 °C. Meanwhile, calcium carbonate was the main crystalline phase if the process was carried out in the absence of toluene. The aerogel sample demonstrated excellent thermal stability. After calcination at 900 °C for 6 h it had the surface area of 48 m2/g and 93% of the mayenite phase.
KW - Aerogel
KW - Calcium aluminate
KW - Mayenite
KW - Nanocrystals
KW - Toluene
UR - https://www.scopus.com/pages/publications/105026339547
UR - https://www.mendeley.com/catalogue/67fc3ed3-a575-3014-a287-36b4da7b7d90/
U2 - 10.1007/s10971-025-07080-1
DO - 10.1007/s10971-025-07080-1
M3 - Article
VL - 117
JO - Journal of Sol-Gel Science and Technology
JF - Journal of Sol-Gel Science and Technology
SN - 0928-0707
IS - 1
M1 - 6
ER -
ID: 73865357