Polyamide-imide copolymer-derived carbon molecular sieve membranes for efficient hydrogen/carbon dioxide separation

Next-generation carbon molecule sieve membranes derived from polyimides and polymers of intrinsic microporosity for key energy intensive gas separations and carbon capture

“…CMS membranes have been used in a wide range of CO 2 /CH 4 applications, such as the purification of natural gas, biogas, oil field gas, and coal bed methane. 108,142 Aromatic PIs are often used to prepare CMS membranes for gas separation due to their diverse molecular structure. 126 As early as a few decades ago, commercial PIs matrimid, Kapton and P84 were applied to produce CMS membranes for gas separation.…”

“…203 Considerable efforts have also been devoted to developing CMS membranes for CO 2 /H 2 separation. 119,142,204…”

“…The selectivity of CMS membranes can be adjusted by controlling the cross-linking degree and pore size of the membranes. 35,142 Recently, Li et al first introduced 6,6′-15(1,4-phenylenebis) (((4-hydroxyphenyl) amino)methylene)bis(dibenzo[ c , e ][1,2] oxaphosphinine6-oxide, DOPO-p-DP) as a cross-linking agent to crosslink 6FDA-DAM-Br-85% PI, followed by carbonizing the obtained crosslinked precursor to form CMS membranes (Fig. 23a).…”