A porous metal-organic cage liquid for sustainable CO2 conversion reactions

Chang He, Yu-Huang Zou, Duan-Hui Si, Zi-Ao Chen, Tian-Fu Liu, Rong Cao () and Yuan-Biao Huang ()
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Chang He: Chinese Academy of Sciences
Yu-Huang Zou: Chinese Academy of Sciences
Duan-Hui Si: Chinese Academy of Sciences
Zi-Ao Chen: Chinese Academy of Sciences
Tian-Fu Liu: Chinese Academy of Sciences
Rong Cao: Chinese Academy of Sciences
Yuan-Biao Huang: Chinese Academy of Sciences

Nature Communications, 2023, vol. 14, issue 1, 1-8

Abstract: Abstract Porous liquids are fluids with the permanent porosity, which can overcome the poor gas solubility limitations of conventional porous solid materials for three phase gas-liquid-solid reactions. However, preparation of porous liquids still requires the complicated and tedious use of porous hosts and bulky liquids. Herein, we develop a facile method to produce a porous metal-organic cage (MOC) liquid (Im-PL-Cage) by self-assembly of long polyethylene glycol (PEG)-imidazolium chain functional linkers, calixarene molecules and Zn ions. The Im-PL-Cage in neat liquid has permanent porosity and fluidity, endowing it with a high capacity of CO2 adsorption. Thus, the CO2 stored in an Im-PL-Cage can be efficiently converted to the value-added formylation product in the atmosphere, which far exceeds the porous MOC solid and nonporous PEG-imidazolium counterparts. This work offers a new method to prepare neat porous liquids for catalytic transformation of adsorbed gas molecules.

Date: 2023
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DOI: 10.1038/s41467-023-39089-x

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