Synthesis of Ti-Containing MCM-41 Mesoporous Molecular Sieve in the Presence of Ammonia

Ti-doped MCM-41 mesoporous molecular sieve was synthesized in the presence of ammonia using TiCl 3 as titanium source and TEOS as silica source. The synthesis method was simple, and it needed neither auxiliary templates nor alcohols. The molecular sieve was characterized by XRD and N 2 adsorption/desorption isotherms techniques. The results showed that the synthesized MCM-41 had hexagonal mesostructure with long-range order and good crystallinity. UV-Vis spectra indicated that four clear absorption peaks appeared in the range of 200～300 nm, which gave the facts that there existed different forms of Ti atoms doped in the framework of Ti-MCM-41.