Abstract
Abstract The acidity evaluations using butylamine titration have been carried out to correlate the surface acidic properties of TiO2–SiO2–Al2O3 catalysts with their alkylating activity. The acid amount of TiO2–SiO2–Al2O3 of silica to alumina molar ratio 16.4 and titania content 10.4% (by weight) is nearly double that of SiO2–Al2O3 of the same silica to alumina molar ratio. The acid strength of TiO2–SiO2–Al2O3 coprecipitated from a solution of pH 2 and the acid amount of the same ternary oxide coprecipitated from solutions of higher pH(>6) are low.
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