Natural gas and biogas are important resources.The enrichment of CH4 is necessary for increasing the caloric value of feed gas[1-3].Membrane-based gas separation technology is more energyefficient with continuous oper...Natural gas and biogas are important resources.The enrichment of CH4 is necessary for increasing the caloric value of feed gas[1-3].Membrane-based gas separation technology is more energyefficient with continuous operation and more environmentally friendly than conventional gas separation technologies,and it has strong application prospects in the field of industrial separation[1,4].Metal-organic frameworks(MOFs)have high porosity,adjustable aperture,highly diversified structures and satisfactory chemical stability,which inspire many researchers to explore their applications in membrane fabrication for gas separation[2,3,5].Pure MOF membranes that are fabricated on porous substrates can realize high gas permeance and satisfactory selectivity simultaneously and have been attracted substantial attention[6,7].展开更多
基金supported by the National Natural Science Foundation of China(21536001,21878229,and 21908163)the Science and Technology Plans of Tianjin(18PTSYJC00180 and 19PTSYJC00020)。
文摘Natural gas and biogas are important resources.The enrichment of CH4 is necessary for increasing the caloric value of feed gas[1-3].Membrane-based gas separation technology is more energyefficient with continuous operation and more environmentally friendly than conventional gas separation technologies,and it has strong application prospects in the field of industrial separation[1,4].Metal-organic frameworks(MOFs)have high porosity,adjustable aperture,highly diversified structures and satisfactory chemical stability,which inspire many researchers to explore their applications in membrane fabrication for gas separation[2,3,5].Pure MOF membranes that are fabricated on porous substrates can realize high gas permeance and satisfactory selectivity simultaneously and have been attracted substantial attention[6,7].
