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Finely Tuned Porous Coordination Polymers To Boost Methane Separation Efficiency
Author(s) -
Wang Yang,
Dong Qiubing,
Cao Haifei,
Ji Wei,
Duan Jingui,
Jing Su,
Jin Wanqin
Publication year - 2019
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.201900781
Subject(s) - adsorption , polymer , methane , porosity , materials science , chemical engineering , volume (thermodynamics) , hourglass , pressure swing adsorption , polymer network , nanotechnology , chemistry , thermodynamics , organic chemistry , composite material , history , physics , archaeology , engineering
Absorbents with high breakthrough efficiency and weak host–guest interaction are considered to be promising candidates for an energy‐saving process in feasible pressure/volume swing adsorption (PSA/VSA). Herein, two groups of finely designed Fe‐ and Co‐based porous coordination polymers (PCPs) are proposed and validated; these possess hourglass‐shaped nanochannels, through the cooperation of T‐shaped ligands with shifted methyl groups. Featuring optimal nanochannels, high static adsorption, and relatively lower binding energy, one of these polymers, named NTU‐30, enables significant C 2 H 6 /CH 4 and C 2 H 4 /CH 4 breakthrough efficiency, with approximately 1.0 or 0.6 g CH 4 (100 %) harvested from the corresponding mixtures using 1 g of sample at ambient temperature. Furthermore, the positive effect of aromatic sites within NTU‐30 is detected and investigated through an in situ IR study.