| Abstrakt: |
Sulfated zirconia catalysts were prepared by sol-gel method using CH3COOH as in situ water source to control hydrolysis of alkoxide, and following two sulfation procedures. The samples were characterized by N2 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 CH3COOH reduces the rate of hydrolysis, and improves considerably acidic and catalytic properties. [ABSTRACT FROM AUTHOR] |
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