A Review of Organo-Functionalized Mesoporous Silicas

The discovery of siliceous mesoporous materials made the possible of catalysis,adsorption,and separation processes involving large molecules,which were rather difficult in small pore systems of zeolites.Internal/external surface properties and pore size of siliceous mesoporous materials can be precisely tuned via physical and/or chemical modifications.Moreover,proper modifications can enhance hydrothermal stability of siliceous mesoporous materials.Nowadays,modified mesoporous silicas showed better activity,selectivity,and/or stability than that of pristine mesoporous silicas in many catalysis and adsorption processes.Synthetic mechanisms of siliceous mesoporous materials and recent progress in synthesis and application of organo-functionalized mesoporous silicas were reviewed.