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Sodium Cerium Phosphate, (Na,Ce)2Ce(PO4)2 xH2O, with Mixed Cerium Oxidation Statesстатья
- Авторы: Baranchikov Alexander E., Kozlova Taisiya O., Istomin Sergey Ya, Mironov Andrey V., Vasilchikova Tatyana M., Gippius Andrei A., Plakhova Tatiana V., Vasilyeva Darya N., Ivanov Vladimir K.
- Журнал: ChemistrySelect
- Том: 9
- Номер: 17
- Год издания: 2024
- DOI: 10.1002/slct.202401010
- Аннотация: A previously unknown double ceric sodium phosphate hydrate Na1.97Ce1.03(PO4)2 ⋅ xH2O containing both ceric and cerous cations was obtained by the hydrothermal treatment of amorphous ceric phosphate mixed with a sodium hydroxide aqueous solution. The presence of Ce3+ in the structure was proved by HERFD-XANES and ESR spectroscopy. Iterative transformation factor analysis of HERFD-XANES data allowed estimating the content of Ce3+ as 10 % of the total cerium. Water content of x=0.55 has been determined by thermogravimetric analysis combined with mass-spectrometry data. The structure of the compound was solved from powder X-ray diffraction data (S.G. P21/c a=6.9441(2) Å, b=11.6805(3) Å, c=9.3434(3) Å, β=111.6827(18)°). The new ceric sodium phosphate hydrate has a tunnel structure, where Ce3+ cations most likely partially occupy Na+ positions. The crystal structure of the novel compound has no direct analogues among the crystal structures of double tetravalent metal phosphates.
- Добавил в систему: Истомин Сергей Яковлевич
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Акт экспертизы | Akt_ekspertizyi.pdf | 860,4 КБ | 14 мая 2024 [richard2012] | |
| 2. | Полный текст | ChemistrySelect_-_2024_-_Baranchikov_-_Sodium_Cerium_Phosph… | 820,5 КБ | 14 мая 2024 [richard2012] |