New Concept of Accurate Separation of Soft-Solid Defect-Free MOF Membranes Proposed by Dalian Institute of Chemical Physics

Recently, researcher Yang Weishen and associate researcher Peng Yuan of the Research Group of Inorganic Membranes and New Catalysis Materials of Dalian Institute of Chemical Physics, Chinese Academy of Sciences proposed a soft-solid state by designing a new strategy of facile in-situ growth combined with confinement interfacial polymerization.

Facing serious problems such as energy shortage and greenhouse effect, membrane separation technology with low energy consumption and low carbon emission has attracted much attention in the fields of hydrogen production and purification, carbon dioxide capture and other important industrial gas separation fields

_{To solve the above problems, the research team first grew micron-sized, quasi-vertical, discrete layered Zn 2} (Bim) ₄ solid grains on a commercialized inexpensive flexible porous organic support by fully exposing the Zn ₂ (Bim) ₄ grain layer.

Defect-free Zn ₂ (Bim) ₄ SSCMs offer unique advantages in gas separation applications

This work takes full advantage of the advantages of MOFs, such as the ability to sieve polymers, excellent flexibility of polymers, cheap and easy-to-obtain carriers, and simple and easy-to-scale preparation strategies

The related work is titled Flexible Soft-Solid Metal-Organic Framework Composite Membranes for H ₂ /CO ₂ Separation and published in Angew.

A new record for gas separation with MOF-based membrane—a new flexible, defect-free MOF composite membrane realizes high-precision separation of H ₂ /CO ₂

Schematic diagram of flexible soft-solid Zn ₂ (Bim) ₄ SSCM structure (left) and H ₂ /CO ₂ gas mixture separation application (right)