Electron transfer bands of titanium sites in dehydrated silicalites and in TiO2–SiO2 gel
Abstract
The diffuse reflectance UV spectra of dehydrated titanium silicalites of MFI structure are consistent with the presence of both open [Ti(OH)(OSi)3] and closed [Ti(OSi)4] tetrahedral titanium sites, the closed sites seem to be the only ones occurring in TiO2–SiO2 silica gel.