Vibrational spectroscopic evidence for the presence of TiO6structural units in titanosilicate molecular sieve ETS-10

摘要

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 cm1in the Raman spectrum of ETS-10 suggests that the technique can be useful for the characterization of molecular sieves containing TiO6structural units.