New Insights on CO2−Methane Separation Using LTA Zeolites with Different Si/Al Ratios and a First Comparison with MOFs

Miguel Palomino; Avelino Avelino; Fernando Rey; Susana Valencia

doi:10.1021/la9026656

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New Insights on CO2−Methane Separation Using LTA Zeolites with Different Si/Al Ratios and a First Comparison with MOFs

Langmuir 26(3): 1910-1917

Article 2009 English

Abstract

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LTA zeolites can be synthesized with tailored adsorption properties by controlling the Al content in the framework. In this work, we have demonstrated that it is possible to adjust the polarity of the zeolitic adsorbent to optimize its thermodynamic adsorption properties for the energetically relevant CO2/CH4 separation process. The thermodynamic study has been made from the corresponding adsorption isotherms of the pure gases carried out at different pressures and temperatures, as well as breakthrough separation experiments of CO2/CH4 mixtures and the results were compared to those reported on MOFs. The separation values obtained allow us to conclude that LTA zeolites offer unique possibilities for CH4 upgrading from natural gas.

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New Insights on CO<sub>2</sub>−Methane Separation Using LTA Zeolites with Different Si/Al Ratios and a First Comparison with MOFs

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A Combined Experimental–Computational Investigation of Methane Adsorption and Selectivity in a Series of Isoreticular Zeolitic Imidazolate Frameworks

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