Instrumental Analyses of Zeolitic Bentonites

This study mainly aims at investigating the instrumemtal analyses of the zeolites of three commercial bentonites namely S1-RAW, S2-RAW, and S4-RAW from Semnan Province, Iran. Scanning electron microscopy (SEM),Thermal analysis (TGA-DSC), Fourier-transform infra-red (FTIR), X-ray powder diffraction (XRPD) , X-Ray Fluorescence (XRF), and CHNS were used for the characterization of the samples. SEM showed the presence of zeolitic materials accompanied with thin flakes and very fine particles having nano-structure and nano-pore Montmorillonite which is the dominant clay mineral constituent of bentonite. Before other instrumental analysis, it was necessary to determine the organic content of clay through CHNS ( Carbon, Hydrogen,Nitrogen and Sulfure )test. XRPD spectrum showed the presence of the heulandite group type of zeolitic materials and XRF analysis showed a large amount of alumina and silicate content of each sample.The exact clinoptilolite (clino) member was determined by complementary TGADSC analysis. Water content of each sample was investigated by FTIR.

کلیدواژه ها:

Bentonite ، Heulandite ، Instrumental Analyses ، Nanopore Montmorillonite