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Hydrogen Production and Utilization in a Membrane Reactor

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Hydrogen Purification from Compact Palladium Membrane Module Using a Low Temperature Diffusion Bonding Technology.

Duck-Kyu Oh^1,2, Kwan-Young Lee¹, Jong-Soo Park²

¹Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seoul 02841, Korea.

|November 17, 2020

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A novel compact palladium membrane module (CPMM) achieves high hydrogen flux and selectivity. This diffusion-bonded module offers a significantly smaller footprint for efficient hydrogen purification.

Area of Science:

Materials Science
Chemical Engineering
Separation Technology

Background:

Hydrogen purification is critical for clean energy applications.
Traditional membrane modules can be bulky and energy-intensive.
Low-temperature diffusion bonding offers a promising fabrication route for advanced membranes.

Purpose of the Study:

To develop and evaluate a compact palladium membrane module (CPMM) for hydrogen purification.
To assess the performance of the CPMM fabricated via low-temperature diffusion bonding.
To compare the CPMM's volume and efficiency against previous membrane module designs.

Main Methods:

Fabrication of a palladium membrane module using diffusion bonding at 450 °C.
Measurement of hydrogen (H₂) flux and H₂/N₂ selectivity.

Keywords:

carbon dioxide compact module diffusion bonding hydrogen palladium membrane purification

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Synthesis of Hydrogels with Antifouling Properties As Membranes for Water Purification

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Testing H₂ purification performance using a mixed gas (60% H₂/40% CO₂) at a 5 bar pressure difference.

Main Results:

Achieved a high hydrogen flux of 18.3 mL cm^-2 min^-1.
Demonstrated excellent H₂/N₂ selectivity exceeding 1100.
Successfully separated H₂ to over 99% concentration from a mixed gas, with an 81.4% reduction in module volume compared to prior designs.

Conclusions:

The compact palladium membrane module fabricated by low-temperature diffusion bonding is highly effective for hydrogen purification.
The CPMM offers superior performance in terms of flux, selectivity, and reduced volume.
This technology presents a significant advancement for efficient and compact hydrogen separation systems.