1. The acidic properties of TiO2–SiO2 and its catalytic activities for the amination of phenol, the hydration of ethylene and the isomerization of butene;Itoh;J. Catal.,1974
2. H.P. Wulff, Expoxidation process with improved heterogeneous catalyst, 1975, U.S. Patent 3,923,843.
3. B. Notari, Microporous crystalline titanium silicates, Adv. Catal. 41 (1996) 253–334. Academic Press.
4. Solid acid and base catalysts;Tanabe,1981
5. G. Bellussi, M.S. Rigutto, Metal ions associated to the molecular sieve framework: possible catalytic oxidation sites, Stud. Surf. Sci. Catal. 85 (1994) 177. Elsevier.