151159 20251017144609.0 doi 10.1098/rsos.210660 sideral 125801 ART-2021-125801 eng Perea-Cachero A. (orcid)0000-0002-0157-9507 Pre-combustion gas separation by ZIF-8-polybenzimidazole mixed matrix membranes in the form of hollow fibres - Long-term experimental study 2021 Access copy available to the general public Unrestricted Polybenzimidazole (PBI) is a promising and suitable membrane polymer for the separation of the H 2 /CO 2 pre-combustion gas mixture due to its high performance in terms of chemical and thermal stability and intrinsic H 2 /CO 2 selectivity. However, there is a lack of long-term separation studies with this polymer, particularly when it is conformed as hollow fibre membrane. This work reports the continuous measurement of the H 2 /CO 2 separation properties of PBI hollow fibres, prepared as mixed matrix membranes with metal-organic framework (MOF) ZIF-8 as filler. To enhance the scope of the experimental approach, ZIF-8 was synthesized from the transformation of ZIF-L upon up-scaling the MOF synthesis into a 1 kg batch. The effects of membrane healing with poly(dimethylsiloxane), to avoid cracks and non-selective gaps, and operation conditions (use of sweep gas or not) were also examined at 200°C during approximately 51 days. In these conditions, for all the membrane samples studied, the H 2 permeance was in the 22-47 GPU range corresponding to 22-32 H 2 /CO 2 selectivity values. Finally, this work continues our previous report on this type of application (Etxeberria-Benavides et al. 2020 Sep. Purif. Technol. 237, 116347 (doi:10.1016/j.seppur.2019.116347)) with important novelties dealing with the use of ZIF-8 for the mixed matrix membrane coming from a green methodology, the long-term gas separation testing for more than 50 days and the study on the membrane operation under more realistic conditions (e.g. without the use of sweep gas). info:eu-repo/grantAgreement/ES/AEI/PID2019-104009RB-I00-AEI-10.13039-501100011033 info:eu-repo/grantAgreement/EC/H2020/760944/EU/Advanced MEMBranes and membrane assisted procEsses for pre- and post- combustion CO2 captuRe/MEMBER This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 760944-MEMBER info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es 3.653 2021 MULTIDISCIPLINARY SCIENCES 30 / 74 = 0.405 2021 Q2 T2 0.758 2021 Multidisciplinary 2021 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Etxeberría-Benavides M. David O. Deacon A. Johnson T. Malankowska M. (orcid)0000-0001-9595-0831 Téllez C. Universidad de Zaragoza (orcid)0000-0002-4954-1188 Coronas J. Universidad de Zaragoza (orcid)0000-0003-1512-4500 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 8 (2021), [12 pp.] R. Soc. open sci. Royal Society Open Science 2054-5703 1857215 http://zaguan.unizar.es/record/151159/files/texto_completo.pdf Versión publicada 2061714 http://zaguan.unizar.es/record/151159/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:151159 articulos driver 2025-10-17-14:16:26 ARTICLE