New PEEK-WC and PLA membranes for H 2 separation

Iulianelli, A. and Algieri, C. and Donato, L. and Garofalo, A. and Galiano, F. and Bagnato, G. and Basile, A. and Figoli, A. (2017) New PEEK-WC and PLA membranes for H 2 separation. International Journal of Hydrogen Energy, 42 (34). pp. 22138-22148. ISSN 0360-3199

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The potentialities of PEEK-WC (thermally treated at 120 °C) and PLA polymers have been studied in the field of membrane technology applied to H2 separation/purification. In particular, for low/medium temperature operation (80 °C), PEEK-WC membranes (66 μm thick) showed good results in terms of H2/CH4 separation, showing an ideal selectivity value higher than 40. Meanwhile, we observed interesting selectivity also for H2/N2 and H2/CO2 separation, reaching values of 24 and 20, respectively. As expected, for PEEK-WC thermally treated membranes, the H2 permeating flux increased from 25 to 80 °C and by increasing the transmembrane pressure. Furthermore, H2 permeability at 80 °C was around 20 barrer. Concerning PLA membranes (26 μm thick), it is worth of noting that this polymer was pioneeristically used in this work as membrane application, showing great results in terms of H2/CO2 separation. Indeed, we overcame the Robeson's upper-bound (2008), achieving an ideal selectivity H2/CO2 around 25 with an H2 permeability of 25 barrer. Further advantage due to the utilization of PLA membranes was related to the temperature operations set at ambient conditions, constituting a valuable and cost-effective solution for H2/CO2 separation processes via polymeric membrane technology.

Item Type:
Journal Article
Journal or Publication Title:
International Journal of Hydrogen Energy
Uncontrolled Keywords:
?? h2 separationpeek-wcplamembranesenergy engineering and power technologycondensed matter physicsfuel technologyrenewable energy, sustainability and the environment ??
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Deposited On:
05 Oct 2022 10:20
Last Modified:
26 Jan 2024 01:29