Ti-modified Mesoporous Molecular Sieves Containing both Selective Oxidation and Photocatalysis Centers

Mesoporous molecular sieves possessing high mesopore volumes and large specific surface areas were prepared and characterized by means of XRD, low temperature N2 adsorption-desorption measurements,FT IR, Raman, UV-visible diffuse reflectance and XPS spectroscopy. The materials contain both framework and extra-framework Ti centers which exhibit selective oxidation catalytic activity and photocatalytic activity respectively. The catalysis of selective oxidation was studied with the hydroxylation of benzene with hydrogen peroxide and photochemical activity was studied by the yields of · OH and H2O2, respectively.Supported by the State Major Basic Research Project of China,the National Natural SeienceFoundation of China中国科学引文数据库(CSCD)4386-3912