Researchers at Tohoku University have developed new mixed matrix membranes using heteroatom-engineered covalent organic frameworks (COFs). This new material overcomes the traditional trade-off between permeability and selectivity, allowing carbon dioxide to pass through quickly while maintaining high separation accuracy. The breakthrough surpasses the 2008 Robeson upper bound, a long standing benchmark in gas separation. This technology could reduce the energy required for natural gas purification, hydrogen production, and industrial carbon capture compared to energy-intensive methods like amine scrubbing.
