Systematic measurements of CH4 and CO2 adsorption isotherms on cation-exchanged zeolites 13X

Haleh Golipour, Babak Mokhtarani (Corresponding author), Morteza Mafi, Mohammadali Khadivi, Hamid Reza Godini

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Experimental data for adsorption of pure carbon dioxide, methane, and nitrogen on zeolite 13X granules at different temperatures (288.15-318.15 K) and pressure up to 20 bar are reported. The cation of adsorbent is exchanged with H+, Li+, and Cu2+, and the adsorption of pure gases is measured. The equilibrium adsorption isotherms of gases are performed with a static volumetric adsorption instrument, which was designed and built. The results show that the adsorption capacity of carbon dioxide is higher than that of methane and nitrogen and that the cation exchange improved the adsorption capacity of pure gases. The LiX adsorbent has the highest adsorption capacity among the studied adsorbents. However, the relative selectivity of carbon dioxide over methane for zeolite 13X has the highest value of 30.48. The CuX adsorbent shows the highest selectivity for carbon dioxide over nitrogen. The adsorption isotherms for all of the pure gases are fitted successfully with the Toth model.

Original languageEnglish
Pages (from-to)4412-4423
Number of pages12
JournalJournal of Chemical and Engineering Data
Volume64
Issue number10
DOIs
Publication statusPublished - 10 Oct 2019

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