Isomerization of n-butane over the catalysts of SO4/ZrO2-Al2O3 and Pt-SO4/ZrO2-Al2O3

The effects of the conditions such as calcination time and temperature for preparing solid superacid catalysts, SO4/ZrO2-Al2O3 (SZA) and Pt-SO4/ZrO2-A l2O3, on their surface structure and crystallizability were studied. The re action performance of the catalysts mentioned above for isomerization of n- butane was examined using pulse technique. The results showed that addition of Al2O3 could increase the catalytic activity and selectivity, and decrea se the reaction temperature for getting the same activity; addition of Pt t o SZA could increase the catalyst catalytic activity and stability more eff ectively.