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Effective enhancement of selectivities and capacities for CO2 over CH4 and N2 of polymers of intrinsic microporosity via postsynthesis metalation |
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| Authors: | Honglei Ling Omid T Qazvini Shane G Telfer Jianyong Jin |
| Institution: | 1. School of Chemical Sciences, The University of Auckland, Auckland, New Zealand
Dodd-Walls Centre for Quantum and Photonic Technologies, Auckland, New Zealand;2. MacDiarmid Institute of Advanced Materials and Nanotechnology, School of Fundamental Sciences, Massey University, Palmerston North, New Zealand;3. School of Chemical Sciences, The University of Auckland, Auckland, New Zealand |
| Abstract: | A series of metalized C-PIM-M (M = Na+, Mg2+, Al3+, PIMs = polymers of intrinsic microporosity) materials were prepared from a carboxyl-functionalized PIM (C-PIMs). The C-PIM-Na exhibited a high CO2 adsorption capacity of 2.44 mmol/g and extreme low CH4 uptake of 0.28 mmol/g at 273 K and 101 kPa among three metallated PIMs. It showed remarkably high CO2/CH4 and CO2/N2 selectivities at both 273 and 293 K due to an advantageous pore-blocking effect of Na+ cation. |
| Keywords: | adsorption carboxylated PIM CO2 capture metalized PIM polymers of intrinsic microporosity |