Effect of Lewis Acid on Alkylation of Isobutane with Butene I. Modification Effect of SbCl_5

The modification effect of SbCl 5 on isobutane alkylation with butene catalyzed by heteropoly acid (HPA) was investigated, the acid strength of SbCl 5/HPA catalyst was determined by the traditional method of Hammett indicators. The results revealed that SbCl 5 enhanced the acid strength of HPA, and that the alkylate yield and the product distribution were influenced under different conditions, such as the added amount of SbCl 5, the reaction temperature and the reaction time.