Hydrogenation of benzene, mono-, di-, and trimethylbenzenes over nickel catalysts supported on porous glass

Authors

  • Takeshige Takahashi,

    Corresponding author
    1. Department of Chemical Engineering, Faculty of Engineering, Kagoshima University, Kagoshima 890, Japan
    • (Department of Chemical Engineering, Faculty of Engineering, Kagoshima University, Kagoshima 890, Japan; 0992–54–7141, Ext. 4760)
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  • Koji Yamashita,

    1. Department of Chemical Engineering, Faculty of Engineering, Kagoshima University, Kagoshima 890, Japan
    Current affiliation:
    1. Nippon Steel Corp., Ohita, Japan
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  • Takami Kai,

    1. Department of Chemical Engineering, Faculty of Engineering, Kagoshima University, Kagoshima 890, Japan
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  • Issei Fujiyoshi

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

The hydrogenation of benzene and methyl-benzenes was performed over a nickel catalyst supported on the porous glass prepared from borosilicate glass with an alumina content ranging from 3% to 5%. The micropore size of the porous glass decreased with increasing alumina content. Although the overall reaction rates of benzene and toluene did not significantly change with the alumina content in the borosilicate glass, the rate of 1,3,5-trimethylbenzene, which is the bulkiest molecule among the hydrocarbons tested, decreased as the content of the alumina in the support increased. This result indicates that a catalyst support with molecular shape selectivity can be prepared from borosilicate glass containing alumina.

Abstract

On a effectué l'hydrogénation du benzène et de méthyle-benzènes sur un catalyseur au nickel déposé sur du verre poreux préparé à partir de verre au borosilicate ayant une teneur en alumine comprise entre 3 et 5%. La dimension des micropores du verre poreux diminue quand la teneur en alumine augmente. Bien que les vitesses de réaction globales du benzène et du toluène ne change pas de manière significative avec la teneur en alumine dans le verre au borosilicate, la vitesse du 1,3,5-triméthylebenzène, la molécule la plus volumineuse parmi les hydrocarbures testés, diminue à mesure que la teneur en alumine du support augmente. Ce résultat montre qu'un support de catalyseur possédant une sélectivité de forme moléculaire peut ětre préparé à partir de verre au borosilicate contenant de l'alumine.

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