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<p>Metal-organic framework (MOF) glass membranes demonstrate promising potential in the field of gas separation. This study presents the time-temperature superposition (TTS) principle to guide the fabrication of MOF-based crystalline-glass composite (CGC) membranes, addressing the critical challenge of thermal degradation of fillers during processing. Using glassy ZIF-62 as the continuous phase and crystalline UiO-66, Mg-MOF-74, and MOF-801 as dispersed phases, three types of MOF-based CGC membranes were successfully prepared through precise regulation of processing temperature and time, with minimal thermal decomposition. These membranes exhibit high separation efficiency for CO<sub>2</sub>/N<sub>2</sub>, CH<sub>4</sub>/N<sub>2</sub>, and C4 hydrocarbon mixtures. The TTS-assisted low-temperature remelting strategy establishes a versatile and tailorable platform for developing fresh CGC materials, opening additional pathways for expanding the family of CGC composites.</p>

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Time-Temperature Superposition Principle Serving as a Design Tool for Tailored MOF-Crystal Glass Composite Membranes

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年6月25日

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  • Ying Chen,
  • Yi Yang,
  • Mao Ye,
  • Shuwen Yu,
  • Fan Zhou,
  • Dudu Li,
  • Yuxiu Sun,
  • Lei Tian,
  • Wengang Huang,
  • Jingwei Hou,
  • Zhihua Qiao

摘要

Metal-organic framework (MOF) glass membranes demonstrate promising potential in the field of gas separation. This study presents the time-temperature superposition (TTS) principle to guide the fabrication of MOF-based crystalline-glass composite (CGC) membranes, addressing the critical challenge of thermal degradation of fillers during processing. Using glassy ZIF-62 as the continuous phase and crystalline UiO-66, Mg-MOF-74, and MOF-801 as dispersed phases, three types of MOF-based CGC membranes were successfully prepared through precise regulation of processing temperature and time, with minimal thermal decomposition. These membranes exhibit high separation efficiency for CO2/N2, CH4/N2, and C4 hydrocarbon mixtures. The TTS-assisted low-temperature remelting strategy establishes a versatile and tailorable platform for developing fresh CGC materials, opening additional pathways for expanding the family of CGC composites.