Adsorption of Carbon Dioxide and Nitrogen on Zeolite 5A at High Pressures: Experimental and Thermodynamic Modeling
Volume Title: 1
1Olefin Research Lab, Department of Chemical Engineering, Tarbiat Modares University, Tehran, Iran
2Chemistry and Chemical Engineering Research Center of Iran, P.O. Box 14335-186, Tehran, Iran
High-pressure adsorption of carbon dioxide and nitrogen on zeolite 5A was measured in the pressure range (0 to 4) MPa at 298 K by a volumetric method. The experimental data obtained were correlated by the Toth and Langmuire models, which are generally used for microporous adsorbents such as zeolites. According to the final results, there is a very good agreement between analytical model with experimental data. The preferential adsorption capacity of CO2 on zeolite 5A was much higher than Nitrogen, indicating that zeolite 5A can be used for carbon dioxide sequestration from flue gas. The selectivity of CO2 to N2 decrease with increasing of pressure, and effective separation of CO2 and N2 can be conducted in the pressure up to 1 Mpa.