Development of a Model for the Formation of Materials with a Hierarchical Pore Structure Produced under Sol–Gel Processing Conditions

Abstract

We have developed a model for the formation of silica-containing synthetic functional materials with a hierarchical pore structure and a large specific surface area under self-assembly conditions of sol–gel processes. The model includes the formation of a three-dimensional core (of a cristobalite type) of sol particles consisting of joined polymorphoids in the form of n-membered rings and a continuous transition between fractal aggregate growth mechanisms, from diffusion-limited to cluster–cluster aggregation, followed by evolution culminating in spinodal decomposition. Hierarchical structures have been studied using three-dimensional simulation with Autodesk 3ds Max software.

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Correspondence to I. E. Kononova.

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Original Russian Text © I.E. Kononova, P.V. Kononov, V.A. Moshnikov, 2018, published in Neorganicheskie Materialy, 2018, Vol. 54, No. 5, pp. 500–512.

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Kononova, I.E., Kononov, P.V. & Moshnikov, V.A. Development of a Model for the Formation of Materials with a Hierarchical Pore Structure Produced under Sol–Gel Processing Conditions. Inorg Mater 54, 478–489 (2018). https://doi.org/10.1134/S0020168518050060

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Keywords

  • hierarchical porous materials
  • sol–gel processing