Formation of variable-composition iron(III) hydrosilicates with the сhrysotile structure
- Authors: Krasilin A.A.1,2, Panchuk V.V.3, Semenov V.G.3, Gusarov V.V.1,2
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Affiliations:
- Ioffe Physical Technical Institute
- St. Petersburg State Institute of Technology (Technical University)
- St. Petersburg State University
- Issue: Vol 86, No 12 (2016)
- Pages: 2581-2588
- Section: Article
- URL: https://journals.rcsi.science/1070-3632/article/view/216654
- DOI: https://doi.org/10.1134/S1070363216120021
- ID: 216654
Cite item
Abstract
The process of formation of iron hydrosilicates (Mg2+,Fe3+)2–3Si2O5(OH)4 was studied. It was shown that the stage of coprecipitation of magnesium and iron hydroxides in the presence of silica nanoparticles forms poorly crystallized layered Mg–Fe double hydroxides having Fe3+ ions in the octahedral sites. Hydrothermal treatment of the mixtures of coprecipitated hydroxides and silica nanoparticles gives rise to layered hydrosilicates, where Fe3+ ions occupy both the octahedral (preferentially) and tetrahedral sires. The possibility of the formation and a fairly stable existence of the variable-composition layered hydrosilicate (Mg2+,Fe3+)2–3Si2O5(OH)4 was shown to correlate with the stability range of its precursor brucite-like Mg–Fe layered double hydroxide.
About the authors
A. A. Krasilin
Ioffe Physical Technical Institute; St. Petersburg State Institute of Technology (Technical University)
Author for correspondence.
Email: ikrasilin@gmail.com
Russian Federation, ul. Politekhnicheskaya 26, St. Petersburg, 194021; St. Petersburg
V. V. Panchuk
St. Petersburg State University
Email: ikrasilin@gmail.com
Russian Federation, St. Petersburg
V. G. Semenov
St. Petersburg State University
Email: ikrasilin@gmail.com
Russian Federation, St. Petersburg
V. V. Gusarov
Ioffe Physical Technical Institute; St. Petersburg State Institute of Technology (Technical University)
Email: ikrasilin@gmail.com
Russian Federation, ul. Politekhnicheskaya 26, St. Petersburg, 194021; St. Petersburg