Desulfurizarion of Acid-heat-modified Attapulgite for Low Sulphur Gasoline

The acid and thermal modification of attapulgite was carried to make gasoline desulfurization agent.Under different technological conditions,orthogonal test was carried out to test the effect of desulfurization by low sulfur clean gasoline.According to the effect of desulfurization,the best modified conditions were 2mol/L sulfuric acid concentration under 90℃ calcinated for 60min.In application conditions of desulfurizer 4g/40mL,adsorption time 60 min and adsorption temperature 40℃,the mass fraction of low sulfur gasoline sulfur was from 280μg/g to 54.43μg/g,the desulfurization rate reached 80.56%.