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Updated: Jun 2, 2026

Microfluidic-based Synthesis of Covalent Organic Frameworks (COFs): A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
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Microfluidic-based Synthesis of Covalent Organic Frameworks (COFs): A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface

Published on: July 10, 2017

Compartmentalized Porosity in a Hydrogen-Bonded Organic Framework Enables High-Capacity C3H6/C2H4 Separation.

Yan-Long Zhao1, Xin Zhang1, Xiang-Yu Li1

  • 1State Key Laboratory of Materials Low-Carbon Recycling, Department of Chemical Engineering, College of Materials Science & Engineering, Beijing University of Technology, Beijing, PR China.

Advanced Materials (Deerfield Beach, Fla.)
|June 1, 2026
PubMed
Summary

New hydrogen-bonded organic frameworks (HOFs) offer enhanced gas separation. HOF-BUT-1 demonstrates high propylene uptake and efficient separation of ethylene and propylene, crucial for upgrading methanol-to-olefins products.

Keywords:
adsorbentshydrogen‐bonded organic frameworksolefin separationpore architecture optimization

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Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
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Last Updated: Jun 2, 2026

Microfluidic-based Synthesis of Covalent Organic Frameworks (COFs): A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
08:42

Microfluidic-based Synthesis of Covalent Organic Frameworks (COFs): A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface

Published on: July 10, 2017

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
07:45

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Published on: August 16, 2018

Area of Science:

  • Materials Science
  • Chemical Engineering
  • Adsorption Science

Background:

  • Hydrogen-bonded organic frameworks (HOFs) are key adsorbents for gas separation.
  • A common challenge is the pore-architecture trade-off, limiting capacity.
  • This trade-off involves increased pore volume leading to cavity expansion and reduced confinement.

Purpose of the Study:

  • To develop a novel HOF with improved gas separation capabilities.
  • To overcome the pore-architecture trade-off in HOFs.
  • To assess the performance of the new HOF for C3H6/C2H4 separation.

Main Methods:

  • Synthesis of HOF-BUT-1 using an 8-connected linker.
  • Characterization of HOF-BUT-1's pore structure (pore volume, cavity diameter).
  • Measurement of propylene uptake and C3H6/C2H4 separation potential.
  • Dynamic breakthrough experiments for polymer-grade gas production.

Main Results:

  • HOF-BUT-1 exhibits high porosity (0.95 cm³/g) and small cavities (7.6 Å).
  • Record propylene uptake (8.83 mmol/g) and separation potential (6.45 mmol/g) for C3H6/C2H4.
  • Successful production of polymer-grade C2H4 (≥99.95%) and C3H6 (≥99.5%).
  • Stable performance over multiple cycles.

Conclusions:

  • HOF-BUT-1 effectively balances porosity and confinement for superior gas separation.
  • The material shows significant potential for upgrading methanol-to-olefins products.
  • HOF-BUT-1 represents a breakthrough in adsorbent design for industrial gas separations.