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Article dans une revue

Small Angle X-ray Scattering analysis of porous powders of CaCO3

Abstract : The results of small‐angle and ultra‐small‐angle X‐ray scattering on porous CaCO3 microparticles of pulverulent vaterite made by a conventional chemical route and by using supercritical CO2 are presented. The scattering curves are analysed in the framework of the Guinier–Porod model, which gives the radii of gyration of the scattering objects and their fractal dimension. In addition, the porosity and the specific surface area are determined by using the Porod invariant, which is modified to take into account the effective thickness of the pellet. The results of this analysis are compared with those obtained by nitrogen adsorption.
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https://hal.univ-angers.fr/hal-03165454
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Soumis le : mercredi 10 mars 2021 - 16:30:28
Dernière modification le : vendredi 12 mars 2021 - 03:23:52
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  • HAL Id : hal-03165454, version 1
  • OKINA : ua3654

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Elvia Anabela Chavez-Panduro, Thomas Beuvier, M. Fernandez-Martinez, Leila Hassani, Brice Calvignac, et al.. Small Angle X-ray Scattering analysis of porous powders of CaCO3. Journal of Applied Crystallography, International Union of Crystallography, 2012, 82 (3), pp.881-889. ⟨hal-03165454⟩

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