Zeolite Rho: a highly selective adsorbent for CO2/CH4 separation induced by a structural phase modification

[EN] Zeolite Rho is able to successfully separate CO2 from CH4 with the highest selectivity ever observed on the basis of pore diameter and surface polarity. The adsorption of CO2 provokes structural changes in the zeolite Rho.We acknowledge financial support from Spanish CICYT (MAT2009-14528-C02-01, CTQ2010-17988/PPQ) and European Project TopCombi (NMP2-CT2005-515792). M.P. thanks CSIC for a JAE doctoral fellowship. The authors thank the referee for the suggestion to carry out structural studies.Palomino Roca, M.; Corma Canós, A.; Jorda Moret, JL.; Rey Garcia, F.; Valencia Valencia, S. (2012). Zeolite Rho: a highly selective adsorbent for CO2/CH4 separation induced by a structural phase modification. Chemical Communications. 48(2):215-217. doi:10.1039/C1CC16320E215217482Ruthven, D. M., & Reyes, S. C. (2007). Adsorptive separation of light olefins from paraffins. Microporous and Mesoporous Materials, 104(1-3), 59-66. doi:10.1016/j.micromeso.2007.01.005Jiang, J., Yu, J., & Corma, A. 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