A high resolution infrared study of HY and HZSM-20 in the hydroxy stretching region

Abstract
Deconvolution of the high-frequency infrared hydroxy stretching band of NaHY shows that the bond envelope is made up of five major components, and dealumination via Si substitution using (NH4)2SiF6 leads to a decrease in the intensity of the high-frequency components; HZSM-20 is shown to possess hydroxy band properties similar to those observed in high-silica HY zeolites.