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Related Concept Videos

What are Membranes?01:54

What are Membranes?

A key characteristic of life is the ability to separate the external environment from the internal space. To do this, cells have evolved semi-permeable membranes that regulate the passage of biological molecules. Additionally, the cell membrane defines a cell’s shape and interactions with the external environment. Eukaryotic cell membranes also serve to compartmentalize the internal space into organelles, including the endomembrane structures of the nucleus, endoplasmic reticulum and Golgi...
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Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at the...
Ion Exchange01:17

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Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...

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Recent Progress in Mixed-Matrix Membranes for Hydrogen Separation.

Chong Yang Chuah1, Xu Jiang1, Kunli Goh1

  • 1Singapore Membrane Technology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore.

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|September 26, 2021
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Summary
This summary is machine-generated.

Mixed-matrix membranes (MMMs) enhance hydrogen separation performance, surpassing limits of traditional polymeric membranes. This review details recent advancements in MMMs using novel fillers for efficient hydrogen purification.

Keywords:
covalent organic frameworkgraphenehydrogen separationmetal-organic frameworkmixed-matrix membranezeolite

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Separation Technology

Background:

  • Hydrogen separation is crucial for clean energy. Membrane technology offers a promising purification route.
  • Mixed-matrix membranes (MMMs) are advanced polymeric membranes designed to improve separation efficiency.

Purpose of the Study:

  • To review recent progress in mixed-matrix membranes (MMMs) for hydrogen separation.
  • To highlight novel filler materials and strategies for enhancing MMM performance.

Main Methods:

  • Review of state-of-the-art mixed-matrix membranes (MMMs).
  • Discussion of emerging filler materials: zeolites, metal-organic frameworks, covalent organic frameworks, and graphene-based materials.
  • Analysis of the binary filler strategy for synergistic effects.

Main Results:

  • MMMs demonstrate enhanced separation performance, exceeding traditional limits.
  • Novel fillers like MOFs, COFs, and graphene significantly improve MMMs for hydrogen separation.
  • The binary filler strategy shows potential for synergistic performance gains.

Conclusions:

  • Mixed-matrix membranes (MMMs) are a key technology for advanced hydrogen separation.
  • Continued development of fillers and strategies will further optimize MMMs for efficient hydrogen purification.