Vibrational spectroscopic evidence for the presence of TiO6 structural units in titanosilicate molecular sieve ETS-10

Abstract

A comparison of infrared and Raman spectra of a titanosilicate molecular sieve ETS-10 with literature data on titanium-containing ZSM-5 (TS-1) and perovskite SrTiO3 provides conclusive evidence for the presence of intraframework TiO6 octahedral units in ETS-10. The appearance of a very strong band at 723 cm(-1) in the Raman spectrum of ETS-10 suggests that the technique can be useful for the characterization of molecular sieves containing TiO6 structural units.