The effects of surface chemical modification with oxysilanes on the changing in the structural-phase state of highly porous aluminum oxyhydroxides during annealing up to 1200 °C

Авторы: Khodan A.N., Bykov A.V., Kiselev M.R.
Журнал: Protection of Metals and Physical Chemistry of Surfaces
Том: 59
Номер: 2
Год издания: 2023
Издательство: Pleiades Publishing, Ltd
Местоположение издательства: Road Town, United Kingdom
Первая страница: 145
Последняя страница: 150
DOI: 10.1134/S2070205123700193
Аннотация: Changes in the composition and physicochemical properties of porous monolithic 3D nanostructuresof aluminum oxyhydroxides (porous monolithic aluminum oxides, PMAO) chemically modified inmethyltrimethoxysilane vapors have been studied by thermal-analysis methods. The conditions of formationand compositions of organosilicon compounds on the PMAO surface have been determined, a high degreeof hydrolysis (91%) of the alkoxy groups of the modifier during chemisorption has been confirmed. Thedependence of the composition of the porous nanocomposite structure (Al2O3–SiO2) on the conditions ofchemical and thermal treatment has been investigated. General changes in the chemical composition of thenanocomposite when using different annealing times in the range from 100 to 1200°C has been described.
Добавил в систему: Ходан Анатолий Николаевич

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