Issue 41, 2022

Evaluating solvothermal and mechanochemical routes towards the metal–organic framework Mg2(m-dobdc)

Abstract

Metal–organic frameworks bearing coordinatively unsaturated Mg(II) sites are promising materials for gas storage, chemical separations, and drug delivery due to their low molecular weights and lack of toxicity. However, there remains a limited number of such MOFs reported in the literature. Herein, we investigate the gas sorption properties of the understudied framework Mg2(m-dobdc) (dobdc4− = 4,6-dioxido-1,3-benzenedicarboxylate) synthesized under both solvothermal and mechanochemical conditions. Both materials are found to be permanently porous, as confirmed by 77 K N2 adsorption measurements. In particular, Mg2(m-dobdc) synthesized under mechanochemical conditions using exogenous organic base displays one of the highest capacities reported to date (6.14 mmol g−1) for CO2 capture in a porous solid under simulated coal flue gas conditions (150 mbar, 40 °C). As such, mechanochemically synthesized Mg2(m-dobdc) represents a promising new framework for applications requiring high gas adsorption capacities in a porous solid.

Graphical abstract: Evaluating solvothermal and mechanochemical routes towards the metal–organic framework Mg2(m-dobdc)

Supplementary files

Article information

Article type
Paper
Submitted
28 mai 2022
Accepted
30 jun 2022
First published
30 jun 2022

CrystEngComm, 2022,24, 7292-7297

Author version available

Evaluating solvothermal and mechanochemical routes towards the metal–organic framework Mg2(m-dobdc)

E. Y. Chen, R. M. Mandel and P. J. Milner, CrystEngComm, 2022, 24, 7292 DOI: 10.1039/D2CE00739H

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