Chemistry Letters, Vol.41, No.12, 1563-1565, 2012
Observation of (TiNMR)-Ti-47,49 Spectra of TiCl4/MgCl2 Catalysts under an Ultrahigh Magnetic Field
A series of TiCl4/MgCl2 catalysts prepared with various milling times were investigated by Ti-47,Ti-49 MAS NMR spectroscopy with an ultrahigh magnetic field of 21.8 T. Notable spectral features were observed: with the increase of milling times, the resonance lines shifted toward the high field, and they were broadened.