Adsorption of CO2 on Zeolite 13X Prepared from Modified Natural Iranian Kaolin


1 Faculty of Oil, Gas and Chemical Engineering, Semnan University, Semnan, Iran

2 Research Laboratory of Nanoporous Materials, Faculty of Chemistry, Iran University of Science and Technology, FarjamStreet, Narmak, Tehran 16846-13114, Iran


Synthesis of zeolite 13X from modified natural Iranian kaolin at 65˚C for 72 h at various concentration of NaOH solution was investigated. Metakaolinization process was done at 900˚C for 2 h. NaOH solution with different concentrations, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5 and 4 M were separately mixed with metakaolins. A mixture of zeolite 13X, A, quartz and hydroxysodalite (HS) was obtained. The products were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The prepared zeolite 13X has been used to study the adsorption of carbon dioxide, and the results are compared with commercial zeolite 13X.


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