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Synthesis of iron sulphides: a Mossbauer studyстатья
- Авторы: Chistyakova N.I., Rusakov V.S., Kozerenko S.V., Fadeev V.V.
- Сборник: A Mössbauer Study. In: Mashlan M., Miglierini M., Schaaf P. (eds) Material Research in Atomic Scale by Mössbauer Spectroscopy. NATO Science Series (Series II: Mathematics, Physics and Chemistry)
- Том: 94
- Год издания: 2003
- Издательство: SPRINGER
- Местоположение издательства: VAN GODEWIJCKSTRAAT 30, DORDRECHT, NETHERLANDS, 3311GZ
- Первая страница: 261
- Последняя страница: 270
- DOI: 10.1007/978-94-010-0151-9_27
- Аннотация: The kinetics of iron sulfide crystallization from X-ray amorphous water bearing precipitates (hydrotroilite) was investigated by 57Fe Mossbauer spectroscopy. Synthesis was carried out in the temperature range 20oC<T<200oC. The investigated samples were exposed to aging from several days to several years. It was shown that the reaction proceeded in different ways depending on redox conditions. Hydrotroilite was converted to pyrite in the presence of elemental sulfur. In more reducing conditions without elemental sulfur, however, a sequence of metastable sulfide phases including hydrotroilite, mackinawite, greigite, pyrite and marcasite were formed. In aqueous solutions unsaturated by sulfide sulfur a precursor phase - tochilinite was synthesized. In this study Mossbauer investigation of mackinawite and tochilinite as intermediate phases in the process of hydrotroilite aging are carried out.
- Добавил в систему: Чистякова Наталия Игоревна