Advances in modification of solid superacid catalysts

Supported solid superacicd catalyst is a new type of catalytic materials which have been developed in recent years.Solid superacid catalysts have been proved to be very effective from the viewpoint of activity,selectivity and reusability in the preparation of various important chemicals which have a number of difficulties with homogeneous catalysts.Advances in modifications of the catalysts are reviewed,including the studies on carriers,promotion agents and preparation of catalyst by nanotechnology.Catalytic theory of solid superacid catalysts and modern analysis methods for the catalysts,structure of acidic centers,mechanisms of deactivation,applications of solid superacid are discussed.Finally,development trends of solid superacid catalysts are put forward.