Synthesis and characterization of a novel microporous titanosilicate JLU-1

A novel microporous titanosilicate JLU-1 (JiLin University number-1) has be en successfully synthesized in a SiO2-TiO2-Na2O-H2O-(TMA)(2)O system. It is found that the JLU-1 sample requires a relatively low alkalinity and appro priate titanium content. The products are indexed as triclinic, a = 13.043( 6) Angstrom b = 12.538(3) Angstrom, c = 17.022(6) Angstrom, alpha = 79.05 d egrees, beta = 115.00 degrees, gamma = 84.81 degrees. The samples have been characterized by powder X-ray diffraction (XRD), Si-29 magic-angle spinnin g (MAS) NMR, scanning electron microscopy (SEM), high-resolution transmissi on electron microscopy (HREM), infrared spectroscopy (IR), differential the rmal-thermogravimetric analysis (DT-TGA), and adsorption measurements. Fact ors such as the initial TiO2/SiO2, Na2O/SiO2, and TMABr/SiO2 molar ratios, crystallization temperature, and cations which dominate the hydrothermal sy nthesis of the product are discussed.