n-Hexane Isomerization over Pt and Al2O3-Promoted SO4^2- /ZrO2

Four Pt-SO~(2-)_4/ZrO_2-Al_2O_3(PSZA)samples were prepared by different introduction methods of Al,that is,co-precipitation introduction method(CP),shaping introduction method(SH),suspension introduction method(SU) and mixing introduction method(MI),with the same other preparation conditions,such as,precipitation pH,dry conditions,calcination temperatures,Pt impregnation conditions,and Al_2O_3 and Pt contents.Tissue structure of the samples and their sulfur content were measured by N_2 adsorption and a micr...