High-flux mixed matrix membranes containing bimetallic zeolitic imidazole framework-8 for C3H6/C3H8 separation

Grand Challenges in Emerging Separation Technologies

“…However, this carbon membrane cannot achieve 99.9% ethylene separation, so it cannot meet the purity of ethylene required in the chemical production process. However, the emergence of ZIF membranes, especially ZIF-8 MMMs (Li et al, 2020;Oh et al, 2020), solved this problem well, but the common problems of ZIF membranes are the dispersion and compatibility of nanoparticles, which makes it difficult for ZIF membranes to achieve large-scale production. In general, the industry might need up to 1 million square meters of membrane.…”

Recent Progress on Polymers of Intrinsic Microporosity and Thermally Modified Analogue Materials for Membrane‐Based Fluid Separations

“…a) Pure‐ and mixed‐gas C 3 H 6 /C 3 H 8 separation performance of CMS membranes prepared from various polymer precursors [ 23,145,165–166 ] ; b) pure and mixed‐gas C 3 H 6 /C 3 H 8 separation performance of state‐of‐the‐art mixed‐matrix materials in comparison to high‐performance CMS membrane materials. [ 162,169–173 ] …”

“…[ 171 ] Oh et al (2020) reported significant enhancements in pure‐gas C 3 H 6 permeability and C 3 H 6 /C 3 H 8 selectivity up to 240% and 70%, respectively, for MMMs prepared from ZnCo‐mixed hybrid ZIF (ZIF‐8‐67) and 6FDA–DAM. [ 172 ] At a ZIF‐8‐67 loading of 30 wt. %, the resulting MMM membrane displayed a C 3 H 6 permeability 78 Barrer with C 3 H 6 /C 3 H 8 selectivity of 19.1 under pure‐gas testing conditions.…”

Fabrication of zeolitic imidazolate frameworks based mixed matrix membranes and mass transfer properties of C4H6 and N2 in membrane separation

“…Membrane‐based technology is one of the best possible solutions for complete VOC recovery due to its ease of operation, small footprint, low energy usage, easily scale up production, and more significantly, it offers the ability to meet future stricter environmental limits 4 . In the recent works, MMMs showed good achievements in many applications such as water separation, flue gas purification, petrochemical separation, and natural gas separation 5‐9 . The synthesis of mixed matrix membranes (MMMs) is the most promising approach for combining both organic and inorganic material properties at the same time, which also improves gas transport properties and may surpass the Robeson upper bound limit 4,10 .…”

“…4 In the recent works, MMMs showed good achievements in many applications such as water separation, flue gas purification, petrochemical separation, and natural gas separation. [5][6][7][8][9] The synthesis of mixed matrix membranes (MMMs) is the most promising approach for combining both organic and inorganic material properties at the same time, which also improves gas transport properties and may surpass the Robeson upper bound limit. 4,10 It involves the fabrication of composite membranes between polymeric materials as a base, and inorganic material as a filler.…”