Correction to: Surface and porous textural properties of silica-wollastonite composites prepared by sol-gel process (vol 90, pg 113, 2019) - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Sol-Gel Science and Technology Année : 2019

Correction to: Surface and porous textural properties of silica-wollastonite composites prepared by sol-gel process (vol 90, pg 113, 2019)

Liz Anez-Borges
  • Fonction : Auteur
Thierry Woignier
  • Fonction : Auteur
Adil Hafidi Alaoui
  • Fonction : Auteur
Sylvie Etienne-Calas
  • Fonction : Auteur
  • PersonId : 1038861
Florence Despetis
  • Fonction : Auteur
  • PersonId : 1038871
Laurent Bonnet
  • Fonction : Auteur
  • PersonId : 1022040
Bruno Colaiocco
  • Fonction : Auteur
  • PersonId : 1058480
Said Tahir
  • Fonction : Auteur
  • PersonId : 997207

Résumé

Silica-wollastonite xerogel composites (xerocomposites) with different wollastonite filler content were obtained after classical drying of silica-wollastonite gels. Two different silica precursors were used, TEOS and colloidal LUDOX, for composites named TW and LW, respectively. We utilized SAXS experiments, N2 adsorption-desorption, and SEM techniques to determine the textural and structural properties of these porous materials. For both the TW and LW composites, it was shown that a macroporosity and a mesoporosity coexist. We argue that the proportion of macroporosity directly depends on the proportion of wollastonite fillers in the composite. We propose a unique two-stage drying mechanism to explain the formation of macropores. We additionally found that the surface of wollastonite fillers was covered by a dense multilayer packing of silica colloids in LUDOX LW xerocomposites. We believe that these surface-modified wollastonite fillers could improve the carbonation kinetics of wollastonite when used as a precursor for aqueous mineral carbonation, a promising route for safe and durable carbon sequestration.

Dates et versions

hal-02367687 , version 1 (18-11-2019)

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Citer

Lismarihen Larreal de Hernandez, Liz Anez-Borges, Thierry Woignier, Adil Hafidi Alaoui, Sylvie Etienne-Calas, et al.. Correction to: Surface and porous textural properties of silica-wollastonite composites prepared by sol-gel process (vol 90, pg 113, 2019). Journal of Sol-Gel Science and Technology, 2019, 90 (1), pp.126-126. ⟨10.1007/s10971-019-04952-1⟩. ⟨hal-02367687⟩
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