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Structure and Vibrational Spectra of Slags Produced from Radioactive Wasteстатья
- Авторы: Malinina G.A., Stefanovsky S.V.
- Журнал: Journal of Applied Spectroscopy (Минск)
- Том: 81
- Номер: 2
- Год издания: 2014
- Первая страница: 200
- Последняя страница: 204
- Аннотация: The structure of the anionic motif of aluminosilicate and aluminoborosilicate glasses containing simulated slagsfrom a solid radioactive waste incinerator was studied by IR and Raman spectroscopy. Spectra of melted slag were consistent with Si–O tetrahedra with various numbers of bridging O ions and Al–O tetrahedra embedded in the Si–O network in the slag vitreous and crystalline phases (nepheline, nagelschmidtite). Vibrations of doubly and triply bound Si–O tetrahedra and Al–O tetrahedra embedded between them were mainly responsible for the spectra as the content of sodium disilicate flux and the glass fraction in the materials increased. Addition of sodium tetraborate flux caused the appearance of B–O vibrations of predominantly three-coordinate B and a tendency toward chemical differentiation preceding phase separation.
- Добавил в систему: Стефановский Сергей Владимирович