Journal of Siberian Federal University. Chemistry / High-pressure Helium as a Template for the Formation of a Microporous Silica Structure

Full text (.pdf)
Issue
Journal of Siberian Federal University. Chemistry. 2022 15 (1)
Authors
Kukhtetskiy, Sergey V.; Fomenko, Elena V.; Rogovenko, Elena S.
Contact information
Kukhtetskiy, Sergey V.: Institute of Chemistry and Chemical Technology SB RAS Krasnoyarsk, Russian Federation; ; Fomenko, Elena V.: Institute of Chemistry and Chemical Technology SB RAS Krasnoyarsk, Russian Federation; Rogovenko, Elena S.: Institute of Chemistry and Chemical Technology SB RAS Krasnoyarsk, Russian Federation
Keywords
helium; neon; silica; expanded quartz glass; glass transition temperature; solubility
Abstract

The modeling of various modes of formation of microporous silica using high-pressure helium was carried out by the methods of molecular dynamics. It is shown that by controlling the helium pressure in the process of quenching the silica melt, the structure of the obtained glasses can be changed continuously and within wide limits. The density of the obtained glasses varies in the range from 2.2 to 1.5 g / cm3 and the Ostwald solubility coefficients for helium and neon are more than an order of magnitude

Pages
118–127
DOI
10.17516/1998-2836-0278
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/145236