@article{10902/36247,
year = {2025},
month = {7},
url = {https://hdl.handle.net/10902/36247},
abstract = {The development of efficient separation technologies to recover hydrogen from industrial waste streams plays an important role to satisfy the increasing demand for hydrogen. In this work, mixed matrix hollow fiber membranes were synthesized by incorporating an inorganic filler (ZIF-8) with molecular sieve properties, into a Matrimid® polymer matrix. The membranes were tested under conditions that reproduce real industrial processes, focusing on H2/CO2 separation. Addition of 5 wt% ZIF-8, whose well distribution along the fiber was confirmed by SEM and EDX analysis, resulted in a significant improvement in H2 permeance (30.5 GPU) compared to pristine Matrimid® (16 GPU) at 30 °C. Moreover, selectivity was improved by 67 % reaching values of 3.3 and 41 for H2/CO2 and H2/bulk compounds at 30 °C. The increase in the separation performance is attributed to the molecular sieve effect of ZIF-8 together with the increase of the free volume due to the inclusion of the filler in the polymer matrix, enhancing H2 flux over the other gases. Moreover, the hollow fiber membranes were tested under varying conditions of pressure, temperature and feed composition, including multicomponent streams that represent real process conditions, confirming promising results helping to scale up mixed matrix hollow fiber membranes.},
organization = {This research is being supported by the Spanish Ministry of Science and Innovation through the projects PID2021-123120OB-I00, TED2021-129951B-C21, and “Complementary Plan for Energy and Renewable Hydrogen” additionally supported with funding from European Union NextGenerationEU (PRTR-C17.I1) and by Comunidad Autónoma de Cantabria. Furthermore, authors also acknowledge the funds received within the project PLEC2021-007718 financed by MCIN/AEI/10.13039/501100011033 and European Union Next GenerationEU/RTRP and the project PLAST4H2 EAPA 0018/2022 within the framework on the INTERREG ATLANTIC program. Gonzalo Moral is grateful to the FPU postgraduate research grant awarded by the Spanish Ministry of Science and Innovation.},
publisher = {Elsevier},
publisher = {Separation and Purification Technology, 2025, 362(3), 131890},
title = {Matrimid®/ZIF-8 hollow fiber mixed matrix membranes for hydrogen recovery from industrial waste streams},
author = {Moral Real, Gonzalo and Ortiz Sainz de Aja, Alfredo and Gorri Cirella, Daniel and Ortiz Uribe, Inmaculada},
}