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<p>Hydrogen (H₂) is a promising clean energy carrier, but its production methods generate other gases impurities like CO₂. Conventional purification techniques such as pressure swing adsorption (PSA) and cryogenic distillation are effective but costly and require high energy consumption. To address this issue, this study explores polymeric membranes as a more efficient alternative to enhance H₂ separation performance. Polysulfone (PSF) membrane through the incorporation of silane-modified zeolite 3&#xa0;A filler with the concentration of 10–30 wt% were fabricated via solvent casting method. The membranes were characterized using Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetric Analysis (TGA) and Scanning Electron Microscopy (SEM). ATR-FTIR confirmed the successful filler incorporation as the Si-O-Al band intensities (957 –952&#xa0;cm<sup>− 1</sup>) increased with increasing filler loadings. TGA results showed all MMMs exhibited increasing weight loss with higher zeolite content, indicating that higher loadings may accelerate initial polymer degradation. SEM revealed uniform dispersion at low loading and agglomeration of fillers at higher loading. The gas permeation tests showed limited gas transport for pristine PSF (MP), with H₂ permeance increasing slightly from undetectable at 1&#xa0;bar to 0.48 GPU at 2&#xa0;bar and 1.34 GPU at 3&#xa0;bar, while no detectable CO₂ permeation was observed across the studied pressure range (1–3&#xa0;bar). Meanwhile for MMMs, the PSF/Z3A-30 (M30) membrane achieved the highest H₂ permeance (56.50 GPU) and H₂/CO₂ selectivity (3.40), with a corresponding CO₂ permeance of 16.60 GPU, demonstrating a significant improvement over pristine PSF. These results demonstrate the potential of silane-modified zeolite 3&#xa0;A to improve PSF membranes for hydrogen separation applications.</p>

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Fabrication of polysulfone/zeolite 3 A-APTMS mixed matrix membranes (MMMs) for hydrogen gas separation application

  • 期刊论文

  • 发表日期：

    2026年7月6日

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  • Shamime Zulkefly,
  • Mariam Salmin,
  • Saiful Arifin Shafiee,
  • Wan Zurina Samad,
  • Muhammad Faiz Aizamddin,
  • Mohamad Wafiuddin Ismail

摘要

Hydrogen (H₂) is a promising clean energy carrier, but its production methods generate other gases impurities like CO₂. Conventional purification techniques such as pressure swing adsorption (PSA) and cryogenic distillation are effective but costly and require high energy consumption. To address this issue, this study explores polymeric membranes as a more efficient alternative to enhance H₂ separation performance. Polysulfone (PSF) membrane through the incorporation of silane-modified zeolite 3 A filler with the concentration of 10–30 wt% were fabricated via solvent casting method. The membranes were characterized using Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetric Analysis (TGA) and Scanning Electron Microscopy (SEM). ATR-FTIR confirmed the successful filler incorporation as the Si-O-Al band intensities (957 –952 cm− 1) increased with increasing filler loadings. TGA results showed all MMMs exhibited increasing weight loss with higher zeolite content, indicating that higher loadings may accelerate initial polymer degradation. SEM revealed uniform dispersion at low loading and agglomeration of fillers at higher loading. The gas permeation tests showed limited gas transport for pristine PSF (MP), with H₂ permeance increasing slightly from undetectable at 1 bar to 0.48 GPU at 2 bar and 1.34 GPU at 3 bar, while no detectable CO₂ permeation was observed across the studied pressure range (1–3 bar). Meanwhile for MMMs, the PSF/Z3A-30 (M30) membrane achieved the highest H₂ permeance (56.50 GPU) and H₂/CO₂ selectivity (3.40), with a corresponding CO₂ permeance of 16.60 GPU, demonstrating a significant improvement over pristine PSF. These results demonstrate the potential of silane-modified zeolite 3 A to improve PSF membranes for hydrogen separation applications.