Function of the Non-Crystalline X-Ray Amorphous Phase of Highly Dispersed Powder of CaO in Adsorption of CO2 and H2O

Авторы: Kozerozhets I.V., Panasyuk G.P., Semenov E.A., Buzanov G.A., Avdeeva V.V., Danchevskay M.N., Tsvetov N.S., Shapovalov S.S., Vasil’ev M.G.
Журнал: Russian Journal of General Chemistry
Том: 92
Номер: 2
Год издания: 2022
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 1
Последняя страница: 8
DOI: 10.1134/S1070363222020232
Аннотация: Highly dispersed CaO has been synthesized by heating an aqueous solution of calcium nitrate and D-glucose up to 800°C. Calcium oxide is formed with an average particle size of 0.4 μm. According to X-ray powder diffraction and DSC studies, after exposure to the air for 24 h at 25°C the sample consists of crystalline phases of hydroxide (17.7 wt %), carbonate (20.0 %), calcium oxide (up to 5.5 wt %), and up to 56.8 wt % of the sample consist of a non-crystalline X-ray amorphous CaO phase. The synthesized highly dispersed CaO has been stored in the air at 25°C for 7 days. According to X-ray powder diffraction and DSC methods, the obtained sample consists of crystalline phases of calcium hydroxide (12.8 wt %) and calcium carbonate (83.4 wt %). The calculations error does not exceed 10%.
Добавил в систему: Данчевская Марина Николаевна

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