Preparation and characterization of Co doped SO_4~(2-)/SnO_2 solid superacid

Solid superacid SO42-/SnO2 was modified by Co via impregnation and deposition method.The catalytic performance of the prepared superacid catalyst was evaluated by esterification of acetic acid and n-butanol,The results showed the existence of Co significantly improved the catalytic activity of solid superacid,when calcining temperature was 500℃,the catalyst had the highest activity.Furthermore,the physicochemical properties of the materials were characterized by FT IR,XRD,and TG-DTA.