Hydrogen bond donor functionalized poly(ionic liquids)@MIL-101 for the CO2 capture and improving the catalytic CO2 conversion with epoxide

Yichen Jiang; Dazhi Li; Yifei Zhao; Jianmin Sun

doi:10.1016/j.jcis.2022.03.038

Hydrogen bond donor functionalized poly(ionic liquids)@MIL-101 for the CO₂ capture and improving the catalytic CO₂ conversion with epoxide

J Colloid Interface Sci. 2022 Jul 15:618:22-33. doi: 10.1016/j.jcis.2022.03.038. Epub 2022 Mar 10.

Authors

Yichen Jiang¹, Dazhi Li¹, Yifei Zhao¹, Jianmin Sun²

Affiliations

¹ State Key Laboratory of Urban Water Resource and Environment, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, China.
² State Key Laboratory of Urban Water Resource and Environment, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, China. Electronic address: sunjm@hit.edu.cn.

PMID: 35325697
DOI: 10.1016/j.jcis.2022.03.038

Abstract

Hydrogen bond donor functionalized poly(ionic liquids) were incorporated into MIL-101 framework for synthesis of composites PIL-R@MIL-101 (R = COOH, OH, NH₂). The effect of different hydrogen bond donors on CO₂-epoxide cycloaddition reaction was discussed through XPS, NH₃-TPD characterizations. Thereinto, PIL-COOH@MIL-101 showed efficient catalytic performance in the cycloaddition reaction of CO₂ and epichlorohydrin, 92.7% substrate conversion was obtained under 70 °C, 1.0 MPa, cocatalyst- and solvent-free conditions for 2.5 h. The improved activity was benefited from the synergistic effects of Lewis acidic Cr centers, carboxyl group, and nucleophilic Br^-, together with the high surface area (1178 m²/g), and good CO₂ affinity. In addition, PIL-COOH@MIL-101 also showed facile recovery method by easy centrifugation and good recycling stability. Considering the good CO₂ affinity, excellent catalytic performance in CO₂ cycloaddition reaction, better thermal and recycling stabilities, the facilely prepared functionalized poly(ionic liquid)@MIL-101 composite would exhibit promising application prospect in CO₂ capture and conversion.

Keywords: CO(2) cycloaddition reaction; Cyclic carbonate; Hydrogen bond donor functionalized; MIL-101; Poly(ionic liquid).