Characterization of zeolites

The physicochemical properties of zeolites are studied by various characterization techniques such as XRD, FTIR, SEM etc. Fig. 2 gives the XRD profile of zeolites Y. The presence of sharp peaks indicates high crystalline nature of zeolites. The peaks correspond to different crystal planes in zeolites as shown in Fig 2. The Fig. 3 shows the SEM image of zeolite Y. The surface acidity of zeolites can be measured using pyridine probe in FTIR analysis or NH₃-TPD.

Fig 2. Typical XRD profile of Zeolite Y

 

Fig .3.  SEM image of zeolite Y.