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This research aims to develop a novel permselective membrane for efficient H2/CO2 gas separation.

June 18, 2026Open Access

A permselective membrane for size-sieving based H₂/CO₂ separation

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Randomized trial demonstrates highly efficient H2 separation in membrane-based systems, suggesting advancements in hydrogen economy.

This research aims to develop a novel permselective membrane for efficient H2/CO2 gas separation.
Fabricated membranes using aqueous nematic suspensions of sodium fluorohectorite via spray coating.
Adjusted interlayer height through cation exchange with guanidinium cations.
Conducted separation tests in a Wicke-Kallenbach cell under ambient conditions.
Achieved a near-perfect separation of H2 and CO2 with a 4:1 ratio.
Measured gas permeance of 3 GPU, which may improve with further optimization.
Identified potential pathways for enhancing membrane performance by modifying substrate roughness and nanosheet characteristics.

Federer et al. (2026) studied this question.

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