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Chemically Stable Covalent Organic Framework (COF)‐Polybenzimidazole Hybrid Membranes: Enhanced Gas Separation through Pore Modulation
Author(s) -
Biswal Bishnu P.,
Chaudhari Harshal D.,
Banerjee Rahul,
Kharul Ulhas K.
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201504836
Subject(s) - membrane , covalent bond , covalent organic framework , gas separation , permeability (electromagnetism) , polymer , chemical engineering , chemistry , hybrid material , polymer chemistry , materials science , organic chemistry , biochemistry , engineering
Highly flexible, TpPa‐1@PBI‐BuI and TpBD@PBI‐BuI hybrid membranes based on chemically stable covalent organic frameworks (COFs) could be obtained with the polymer. The loading obtained was substantially higher (50 %) than generally observed with MOFs. These hybrid membranes show an exciting enhancement in permeability (about sevenfold) with appreciable separation factors for CO 2 /N 2 and CO 2 /CH 4 . Further, we found that with COF pore modulation, the gas permeability can be systematically enhanced.