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Abstract <p>In this study, hydrosilicates with a chrysotile structure in the MgO–NiO–MeO–Me′O–SiO<sub>2</sub>–H<sub>2</sub>O (NaOH) systems are obtained using the reverse precipitation method followed by hydrothermal treatment, where Me and Me′ are Cu and/or Fe. The phase and elemental compositions are determined by X-ray spectral microanalysis and X-ray phase analysis, and the parameters of the crystal cell of the samples are calculated. The influence of the initial Ni-based nanoplatelets with Ni<sub>0.95 – <i>x</i></sub>Mg<sub><i>x</i></sub>Cu<sub>0.05</sub>(OH)<sub>2</sub>/ Ni<sub>0.95<i>x</i></sub>Mg<sub><i>x</i></sub>Fe<sub>0.05</sub>(OH)<sub>2</sub>/Ni<sub>0.90 – <i>x</i></sub>Mg<sub><i>x</i></sub>Fe<sub>0.05</sub>Cu<sub>0.05</sub>(OH)<sub>2</sub> composition is studied on the formation of mixed hydrosilicate nanotubes of the corresponding compositions with a chrysotile structure under hydrothermal conditions. The structure, morphology, and particle size parameters of the obtained nanopowders of mixed composition with a chrysotile structure are determined. The thermal stability of the obtained samples is determined using synchronous thermal analysis.</p>

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Formation and Thermal Properties of Hydrosilicates with a Chrysotile Structure in the MgO–NiO–MeO–MeꞌO–SiO2–H2O (NaOH) System, Where Me and Meꞌ Are Cu and/or Fe, Using Mixed Metal Hydroxides as Reagents

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • E. N. Gatina,
  • V. L. Ugolkov,
  • M. S. Lomakin,
  • A. A. Osminina

摘要

Abstract

In this study, hydrosilicates with a chrysotile structure in the MgO–NiO–MeO–Me′O–SiO2–H2O (NaOH) systems are obtained using the reverse precipitation method followed by hydrothermal treatment, where Me and Me′ are Cu and/or Fe. The phase and elemental compositions are determined by X-ray spectral microanalysis and X-ray phase analysis, and the parameters of the crystal cell of the samples are calculated. The influence of the initial Ni-based nanoplatelets with Ni0.95 – xMgxCu0.05(OH)2/ Ni0.95xMgxFe0.05(OH)2/Ni0.90 – xMgxFe0.05Cu0.05(OH)2 composition is studied on the formation of mixed hydrosilicate nanotubes of the corresponding compositions with a chrysotile structure under hydrothermal conditions. The structure, morphology, and particle size parameters of the obtained nanopowders of mixed composition with a chrysotile structure are determined. The thermal stability of the obtained samples is determined using synchronous thermal analysis.