Effect of alumina content on surface area and micropore distribution of porous glass prepared from borosilicate glass

Authors

  • Takeshige Takahashi,

    Corresponding author
    1. Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Kagoshima University, Kagoshima,890 Japan
    • Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Kagoshima University, Kagoshima,890 Japan
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  • Cai Go-Fua,

    1. Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Kagoshima University, Kagoshima,890 Japan
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  • Yoshikazh Ogura,

    1. Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Kagoshima University, Kagoshima,890 Japan
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  • Takami Kai

    1. Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Kagoshima University, Kagoshima,890 Japan
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Abstract

The surface area and micropore distribution of porous glass prepared from borosilicate glass were controlled by the addition of alumina up to 8 wt%. The surface area increased with increased alumina content in the range from 0 to 3 wt%, but it suddenly decreased when the percent alumina exceeded 4 wt%. The mean pore diameter and micropore volume also decreased with increased alumina content. When nickel ion was supported into the porous glass, the surface area decreased to about one-half that of the original glass. Since the amount of nickel supported on the porous glass increased directly with surface area, the silanol group was considered to be uniformly distributed on the glass.

Abstract

La surface spécifique et la distribution de micropores de verre poreux préparé avec du verre de borosilicate. ont été contro'lées par l'ajout d'alumine jusqu'à 8% en poids. La surface spécifique augmente avec la teneur en alumine dans la gamme de 0 à 3% en poids, mais diminue soudainement lorsque ce taux excède 4% en poids. Le diamètre moyen des pores et le volume de micropores diminuent également lorsque la teneur en alumine augmente. Lorsque du nickel ionique est déposé sur du verre poreux, la surface spécifique diminue environ de moitié par rapport à la surface originale. Ètant donné que la quantité de nickel déposé sur du verre poreux augmente directement avec la surface spécifique, on considère que le groupe des silanols est distribué uniformément sur le verre.

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