Point-defect modulation of hydrogen migration in Pd−based membranes

Luo, Haiyu; Liu, Wensheng; Ma, Yunzhu; Xiao, Daihong; Chen, Baishan; Liu, Yang; Liang, Chaoping

doi:10.1016/j.memsci.2024.123285

Journal of Membrane Science

2025

DOI: 10.1016/j.memsci.2024.123285

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Point-defect modulation of hydrogen migration in Pd−based membranes

Haiyu Luo,

Wensheng Liu,

Yunzhu Ma

et al.

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Cited by 2 publications

References 84 publications

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Enhanced H2 production via catalytic steam reforming of acetic acid as bio-oil model compound using asymmetric-structured nickel hollow fiber membrane

Wang,

Hu,

Xue

et al. 2024

Journal of Membrane Science

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Enhanced H2 production via catalytic steam reforming of acetic acid as bio-oil model compound using asymmetric-structured nickel hollow fiber membrane

Wang,

Hu,

Xue

et al. 2024

Journal of Membrane Science

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New Approaches to the Creation of Highly Efficient Pd-Ag and Pd-Cu Membranes and Modeling of Their Hydrogen Permeability

Petriev,

Pushankina,

Drobotenko

2024

IJMS

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Thin-film membranes of Pd-Ag and Pd-Cu alloys capable of releasing hydrogen in a wide temperature range have been developed. The surface activation of the membranes with a nanostructured coating made it possible to intensify hydrogen transport through Pd-containing membranes at low temperatures. This effect was achieved by accelerating limiting surface processes by increasing the active area of the membrane. Surface-activated membranes demonstrated the highest values of hydrogen flux over the entire temperature range, which reached up to 49.4 mmol s−1 m−2 for Pd-Ag membranes and up to 32.9 mmol s−1 m−2 for Pd-Cu membranes. Membranes modified with filiform nanoparticles demonstrated a hydrogen flux up to 12 times higher than that of membranes with a smooth surface. Based on the results obtained, a theoretical model of hydrogen transport through metal membranes was developed, taking into account the effect of the state of the membrane surface on hydrogen transport at low temperatures. This model makes it possible to predict hydrogen flows in the entire temperature range much more accurately compared to other existing models. The selectivity and stability of the developed membranes over a long period of operation have been confirmed. The study of the effect of the surface activation of Pd-based membranes on the intensification of hydrogen permeability has shown the success of the method developed, which in turn opens up wide opportunities for creating low-temperature, highly efficient membrane hydrogen filters based on palladium and other devices based on them.

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Point-defect modulation of hydrogen migration in Pd−based membranes

Cited by 2 publications

References 84 publications

Enhanced H2 production via catalytic steam reforming of acetic acid as bio-oil model compound using asymmetric-structured nickel hollow fiber membrane

Enhanced H2 production via catalytic steam reforming of acetic acid as bio-oil model compound using asymmetric-structured nickel hollow fiber membrane

New Approaches to the Creation of Highly Efficient Pd-Ag and Pd-Cu Membranes and Modeling of Their Hydrogen Permeability

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