doi:10.1039/c5ra20172aengSorribas, S.Comesaña-Gándara, B.Lozano, A.E.Zornoza, B.Téllez, C.Coronas, J.Insight into ETS-10 synthesis for the preparation of mixed matrix membranes for CO2/CH4 gas separationART-2015-93260An in-depth study into the synthesis of the titanosilicate ETS-10 has been carried out to obtain crystals with different particle sizes, roughness and porosity. The effect of these parameters on the CO2/CH4 gas separation performance using mixed matrix membranes (MMMs) has been studied. MMMs based on ETS-10 polycrystalline particles of 1-2 µm in size with high surface roughness and porosity gave rise to a good filler dispersion and filler-polymer interaction. The addition of 10 wt% ETS-10 polycrystalline particles into the polysulfone matrix increased the CO2 permeability from 6.1 to 7.8 Barrer and the CO2/CH4 selectivity from 31 to 38. When using the polyimide 6FDA-6FpDA, a glassy polymer with high gas permeability, the addition of 10 wt% ETS-10 polycrystalline particles increased the CO2 permeability from 96 to 125 Barrer, with a decrease in CO2/CH4 selectivity from 56 to 51.2015http://zaguan.unizar.es/record/6060410.1039/c5ra20172ahttp://zaguan.unizar.es/record/60604oai:zaguan.unizar.es:60604info:eu-repo/grantAgreement/ES/MINECO/MAT2013-45071-Rinfo:eu-repo/grantAgreement/ES/MINECO/MAT2013-40566-Rinfo:eu-repo/grantAgreement/ES/MINECO/MAT2011-25513info:eu-repo/grantAgreement/ES/DGA/T05RSC Advances 5, 124 (2015), 102392-102398by-nchttp://creativecommons.org/licenses/by-nc/3.0/es/info:eu-repo/semantics/openAccess