摘要：

Sulfated zirconia catalysts were prepared by sol-gel method using CH 3 COOH as in situ water source to control hydrolysis of alkoxide, and following two sulfation procedures. The samples were characterized by N 2 adsorption, XRD, chemical analysis, and the activity for isomerization of n -hexane was assessed. It was found that sulfation procedure and the amount of acetic acid added exert a great influence on the catalysts properties. Mixture of sulfuric acid with zirconium propoxide before addition of acetic acid allows the retention of a larger amount of sulfur after calcination and enhances catalytic performances of sulfated zirconia. The use of CH 3 COOH reduces the rate of hydrolysis, and improves considerably acidic and catalytic properties.

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