Abstract
Abstract The article presents the synthesis of composite adsorbents by impregnating zeolite 13X with binary salts (LICl + CaCl2). The phase composition and element content of the composite adsorbent were characterized by X-ray diffraction (XRD) and Inductively coupled plasma (ICP). And its pore structure was discussed through N2 adsorption-desorption analysis. The results show that the formation of the solid solution changes the pore structure of the composite adsorbent which affects its adsorption performance. At the temperature of 25 °C and the relative humidity of 80%, CS6 exhibits the maximum adsorption capacity of 1.1 g/g compared with other adsorbents. The recycling test of CS6 shows that the adsorption capacity is 91.8% of the first time after 12 cycles. Finally, the dynamic adsorption curve and sorption isotherm were fitted by the LDF model and Polanyi Potential Adsorption Theory. It is shown that the simulation curve has good consistency with the measured data.
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