In this research work,three kinds of activated bentonite used as solid acid catalysts had been synthesized and studied on removal of olefins from the reformate oil.Activated bentonite samples were analyzed using the BET and pyridine-FTIR measurements to investigate their physical and chemical properties.The results showed that both textural properties and surface acidity of the bentonite could affect the catalytic activity.Among the catalyst samples,one kind of bentonite purchased from Hubei with high surface area,high pore volume and more acid sites revealed high activity in removing olefins from the re formate.