doi:10.1021/acs.iecr.8b04209engSánchez-Laínez, J.Zornoza, B.Carta, M.Malpass-Evans, R.McKeown, N.B.Téllez, C.Coronas, J.Hydrogen Separation at High Temperature with Dense and Asymmetric Membranes Based on PIM-EA(H2)-TB/PBI BlendsART-2018-109815The preparation of dense and asymmetric flat membranes from the blending of polybenzimidazole (PBI) and (1.5-20 wt %) of a polymer of intrinsic microporosity (PIM-EA(H2)-TB) is reported. Thermal characterization validated the blend by revealing a single glass transition temperature, which suggests the absence of polymer phase segregation. In addition, the decomposition activation energy and d-spacing of the blends follow trends that correlate with the amount of PIM component. The membranes have been tested for the separation of H2/CO2 mixtures. The properties of the dense membranes, which also incorporate zeolitic imidazolate-8 (ZIF-8) nanoparticles, helped understanding of the behavior of the PIM/PBI blends by which phase inversion results in high separation performance asymmetric membranes. Asymmetric membranes show H2/CO2 selectivities of 23.8 (10/90 wt % PIM/PBI) and 19.4 (20/80 wt % PIM/PBI) together with respective H2 permeances of 57.9 and 83.5 GPU at 250 °C and 6 bar feed pressure. The gas separation performance of these asymmetric blends has been fitted to an empirical model, showing the influence of the amount of PIM and the feed pressure.2018http://zaguan.unizar.es/record/8467810.1021/acs.iecr.8b04209http://zaguan.unizar.es/record/84678oai:zaguan.unizar.es:84678info:eu-repo/grantAgreement/ES/DGA/T43-17Rinfo:eu-repo/grantAgreement/EC/FP7/608490/EU/Energy efficient MOF-based Mixed Matrix Membranes for CO2 Capture/M4CO2info:eu-repo/grantAgreement/ES/MEC/FPU2014info:eu-repo/grantAgreement/ES/MINECO-FEDER/MAT2016-77290-RINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 57, 49 (2018), 16909-16916All rights reservedhttp://www.europeana.eu/rights/rr-f/info:eu-repo/semantics/openAccess