Zeolite characterization with spectroscopic methods

Among the different spectroscopic techniques reported in the plenary lecture presented at the FEZA 2002 conference, in this work, we will focus on IR spectroscopy only, devoted to the characterization of the acid strength of the Bronsted groups in zeohtes In particular, in this brief review we will show how the systematic study of the spectroscopic manifestations observed by IR spectroscopy upon dosing to H-zeolites probe molecules with increasing proton affinity will allow to establish a spectroscopic acidity scale for the Bronsted groups hosted in different zeolites.