Influence of acid and heavy metal cation exchange treatments on methane adsorption properties of mordenite

Authors : MERYEM SAKIZCI, LEYLA ÖZGÜL KILINÇ

Pages : 970-983

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :In this study, the adsorption of methane insert ignore into journalissuearticles values(CH$_{4});$ capacities onto natural mordenite obtained from \.{I}zmir, Turkey, and its cationic forms insert ignore into journalissuearticles values(CuM, AgM, FeM, and HM samples); were investigated at the temperatures of 0 and 25 $^{\circ}$C up to 100 kPa. Natural and modified samples were characterized by X-ray diffraction insert ignore into journalissuearticles values(XRD);, X-ray fluorescence insert ignore into journalissuearticles values(XRF);, Fourier transform infrared insert ignore into journalissuearticles values(FT-IR);, thermogravimetry insert ignore into journalissuearticles values(TG-DTG);, differential thermal analysis insert ignore into journalissuearticles values(DTA);, scanning electron microscopy insert ignore into journalissuearticles values(SEM); coupled with energy dispersion spectroscopy insert ignore into journalissuearticles values(EDS);, and N$_{2}$ adsorption methods. Quantitative XRD analysis showed that the major component of the natural zeolite was mordenite, together with minor amounts of quartz, feldspar, and clay mineral. The specific surface area and microporosity of the mordenite sample decreased notably after Ag cation exchange treatment. It was found that the adsorption capacity and the affinity of CH$_{4}$with mordenite samples depended mainly on the type of exchanged cations and increased as HM $
Keywords : Adsorption, methane, mordenite, XRD, FT IR, SEM EDS, TG DTG DTA