Hydroxyl-Based Hyper-Cross-Linked Microporous Polymers and Their Excellent Performance for CO 2 Capture

Yin Liu, Xin Chen, Xiangkun Jia, Xinlong Fan, Baoliang Zhang, Aibo Zhang, Qiuyu Zhang

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

A series of benzyl alcohol (BA)-based hyper-cross-linked microporous polymers (HCPs) were designed and synthesized via facile Friedel-Crafts alkylation using formaldehyde dimethyl acetal (FDA) as external cross-linker promoted by anhydrous ferric chloride (FeCl 3 ). Results demonstrated that Brunauer-Emmett-Teller (BET) specific surface area and pore volume for the HCPs could be controlled by adjusting the amount of FDA and FeCl 3 . The HCPs obtained under optimal conditions showed a BET specific surface area up to 1101 m 2 /g, whose capacity of CO 2 uptake could be as high as 3.03 mmol/g at 273 K/1.0 bar. The isosteric heats of CO 2 sorption for the BA-based HCPs exceed 27 kJ/mol at the low coverage. In addition, the polymer networks possessed high CO 2 /N 2 selectivity of 42. Compared with those BA-based HCPs which is without FDA, the prepared material has higher BET specific surface area and superior CO 2 adsorption properties. These results demonstrated that these prepared HCPs are promising for CO 2 capture and sequestration.

Original languageEnglish
Pages (from-to)17259-17265
Number of pages7
JournalIndustrial and Engineering Chemistry Research
Volume57
Issue number50
DOIs
StatePublished - 19 Dec 2018

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