Hydrochloric Acidic Processing of Titanite Ore to Produce a Synthetic Analogue of Korobitsynite
| Autor: | A. I. Nikolaev, Gregory Yu. Ivanyuk, Lidia G. Gerasimova, Marina V. Maslova, E. S. Shchukina, Gleb O. Samburov, Galina O. Kalashnikova |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
lcsh:QE351-399.2
korobitsynite Hydrochloric acid 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Hydrothermal circulation Apatite Synthetic analogue chemistry.chemical_compound 020401 chemical engineering Titanite hydrated titanosilicate precipitate Hydrothermal synthesis 0204 chemical engineering lcsh:Mineralogy Geology Geotechnical Engineering and Engineering Geology hydrochloric acidic processing 0104 chemical sciences hydrothermal synthesis chemistry visual_art engineering visual_art.visual_art_medium Photocatalysis photocatalysis apatite-nepheline titanite ore Visible spectrum Nuclear chemistry |
| Zdroj: | Minerals Volume 9 Issue 5 Minerals, Vol 9, Iss 5, p 315 (2019) |
| ISSN: | 2075-163X |
| DOI: | 10.3390/min9050315 |
| Popis: | The modal composition of (apatite)-nepheline-titanite ore and its geological setting within apatite deposits of the Khibiny Massif allow selective mining of titanite ore and its hydrochloric acidic processing. The reaction of titanite with concentrated hydrochloric acid produces hydrated titanosilicate precipitate (TSP) which, in turn, can be a precursor in titanosilicate synthesis. It is particularly noteworthy that a synthetic analogue of korobitsynite, Na5(Ti3Nb)[Si4O12]2O2(OH)2· 7H2O, was synthesized by means of TSP alteration by alkaline hydrothermal solution at 200 ° C within three days. The titanosilicate obtained this way has comparatively weak cation-exchange properties regarding Cs+ and Sr2+ cations and considerable photocatalytic activity occurring under visible light, which allows the use of a synthetic korobitsynite analogue (SKR) for production of self-cleaning, sterilizing, and anti-fouling building materials. |
| Databáze: | OpenAIRE |
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