Infrared and Raman studies of ZSM-5 and silicalite-1 at room, liquid nitrogen and helium temperatures

ZSM-5 zeolites with different SiAl ratios have been studied at room, liquid nitrogen and helium temperatures by i.r. and Raman spectroscopy and compared to the spectra of silicalite-1. These spectra are discussed in relation to the crystal structures of the samples interpreted by the full-poymerized zeolite chain model.