关键词: 沸石, 硅烷 P, X射线衍射分析, 傅里叶变换, 红外分光光度法, 紫外分光光度法, 晶体结构

An amphiphilic Ti-β zeolite was prepared from Ti-β modified with n-octadecyltrichlorosilane and characterized by XRD, FT-IR, UV-vis and nitrogen adsorption-desorption techniques. Compared to the parent zeolite, the resulting amphiphilic Ti-β zeolite remained the original crystal structure with a smaller specific surface area and BJH volume of pores. FT-IR and UV-vis spectra indicated the existence of tetrahedrally coordinated Ti atoms, which may act as active sites for epoxidation of olefin. Due to the partial coverage of the external surface with the hydrophobic alkylsilane groups and the hydrophilicity of the rest of the surface, this amphiphilic zeolite was oriented at the water-organic boundary. Such a zeolite may be utilized as phase- boundary catalyst in systems without use of co-solvents .

Key words: ZEOLITE, SILANE P, XRD, FT, IR, UV, CRYSTAL STRUCTURE