Scholarlink

<p>In this study, palladium nanoparticles encapsulated within zeolitic imidazolate frameworks (Pd@ZIF-8) were employed to fabricate mixed matrix membranes (MMMs) by embedding the nanoparticles (NPs) into the Matrimid® 5218 matrix, resulting in membranes with improved gas separation performance. The thermal properties of the MMMs were characterized using differential scanning calorimetry (DSC) and thermogravimetric analyses (TGA). The study examined the impact of Pd@ZIF-8 content (0 to 30 wt.%) on membrane performance and investigated the impact of CO<sub>2</sub>-induced plasticization pressure on the transport properties of H<sub>2</sub>, CO<sub>2</sub>, CH<sub>4</sub>, N<sub>2</sub>, and the selectivity of H<sub>2</sub>/CO<sub>2</sub>, H<sub>2</sub>/CH<sub>4</sub>, and H<sub>2</sub>/N<sub>2</sub> at various feed pressures (3–25&#xa0;bar) and temperatures (35–65 ºC). At 20 wt.% nanoparticle loading, H<sub>2</sub> permeability increased to 68.87 Barrer, with 58% improvement over pristine Matrimid. The H<sub>2</sub>/CO<sub>2</sub> selectivity increased from 4.2 to 6.2, with 32% improvement. Permeability of H<sub>2</sub>, CH<sub>4</sub>, and N<sub>2</sub> increased with temperature following the Arrhenius equation, while CO<sub>2</sub> permeability decreased. A theoretical model based on a dual-sorption mechanism was developed to explain the variations in H<sub>2</sub>/CO<sub>2</sub> permeability and selectivity with pressure into a single equation. The model accurately predicted CO<sub>2</sub> and H<sub>2</sub> permeation behavior in the presence of plasticization, with an average relative error (ARE) below 8%, closely matching experimental data.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effect of temperature and pressure on hydrogen separation performance of matrimid/Pd@ZIF-8 mixed matrix membranes

  • 期刊论文

  • 发表日期：

    2026年6月29日

查看全文
  • Ahmad Mirzaei,
  • Amir H. Navarchian,
  • Shahram Tangestaninejad

摘要

In this study, palladium nanoparticles encapsulated within zeolitic imidazolate frameworks (Pd@ZIF-8) were employed to fabricate mixed matrix membranes (MMMs) by embedding the nanoparticles (NPs) into the Matrimid® 5218 matrix, resulting in membranes with improved gas separation performance. The thermal properties of the MMMs were characterized using differential scanning calorimetry (DSC) and thermogravimetric analyses (TGA). The study examined the impact of Pd@ZIF-8 content (0 to 30 wt.%) on membrane performance and investigated the impact of CO2-induced plasticization pressure on the transport properties of H2, CO2, CH4, N2, and the selectivity of H2/CO2, H2/CH4, and H2/N2 at various feed pressures (3–25 bar) and temperatures (35–65 ºC). At 20 wt.% nanoparticle loading, H2 permeability increased to 68.87 Barrer, with 58% improvement over pristine Matrimid. The H2/CO2 selectivity increased from 4.2 to 6.2, with 32% improvement. Permeability of H2, CH4, and N2 increased with temperature following the Arrhenius equation, while CO2 permeability decreased. A theoretical model based on a dual-sorption mechanism was developed to explain the variations in H2/CO2 permeability and selectivity with pressure into a single equation. The model accurately predicted CO2 and H2 permeation behavior in the presence of plasticization, with an average relative error (ARE) below 8%, closely matching experimental data.