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Solution‐reprocessable microporous polymeric adsorbents for carbon dioxide capture
Author(s) -
Hu Zhigang,
Wang Yuxiang,
Wang Xuerui,
Zhai Linzhi,
Zhao Dan
Publication year - 2018
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.16181
Subject(s) - microporous material , adsorption , chemical engineering , polymer , materials science , dissolution , desorption , ternary operation , desiccant , carbon dioxide , water vapor , precipitation , organic chemistry , chemistry , composite material , physics , meteorology , computer science , engineering , programming language
Solution‐processable microporous polymers are promising materials for CO 2 capture because of their low synthetic cost and high processability. In this work, we for the first time systematically evaluate the feasibility of two microporous polymers, namely PIM‐1 and its hydrolyzed form hPIM‐1, as adsorbent materials for postcombustion CO 2 capture. By conducting ternary CO 2 /N 2 /H 2 O breakthrough experiments, PIM‐1 demonstrates several promising features: moderate CO 2 working capacity, low water vapor uptake capacity, good moisture resistance, and easy regeneration process. In addition, we have pioneeringly studied the multiple‐cycle CO 2 adsorption–desorption induced relaxation effect on soft PIM‐1 polymers. Through a simple dissolution–precipitation approach, PIM‐1 can restore its BET surface area, CO 2 uptake capacity, and pore‐size distribution. The solution reprocessability of PIM‐1 demonstrated in this study distinguishes it from other rigid adsorbents and thus offers a new insight for the future design of economically‐viable and facilely regenerable adsorbents. © 2018 American Institute of Chemical Engineers AIChE J , 64: 3376–3389, 2018