Enhanced Selectivity of the Separation of CO2 from N2 during Crystallization of Semi-Clathrates from Quaternary Ammonium SolutionsJ.-M. Herri, A. Bouchemoua, M. Kwaterski, P. Brântuas, A. Galfré, B. Bouillot, J. Douzet, Y. Ouabbas and A. CameiraoOil Gas Sci. Technol. – Rev. IFP Energies nouvelles, 69 5 (2014) 947-968DOI: https://doi.org/10.2516/ogst/2013201