Expanding MOF with Unexpanded Channel via Ketone Decorated Ligand for Ethylene Purification and Stability Enhancement

Mingxing Zhang; Xingge He; Meng Chen; Haitian Zhao; Yu Wang; Junyang Jiang; Penghui Liu; Rui Dang; Yanfeng Tang; Miao Wang; Tongming Sun; Guoping Qin; Su Wang; Huihui Cui

doi:10.1021/acs.inorgchem.3c02221

Expanding MOF with Unexpanded Channel via Ketone Decorated Ligand for Ethylene Purification and Stability Enhancement

Inorg Chem. 2023 Dec 11;62(49):19922-19929. doi: 10.1021/acs.inorgchem.3c02221. Epub 2023 Nov 21.

Authors

Affiliations

¹ Nantong University, Nantong, Jiangsu 226019, China.
² Chongqing Key Laboratory of Photo-Electric Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, China.

PMID: 37988594
DOI: 10.1021/acs.inorgchem.3c02221

Abstract

The concept of an expanding MOF with unexpanded channel size was realized in MOF NTUniv-61 by the utilization of a ketone-functional-group-decorated semirigid ligand and pillar-layer platform. After this unusual expansion, the preferential C₂H₆ adsorption was preserved via the unchanged pore size, and the functional group was inserted into the MOF. Interestingly, the C₂H₂ uptake ability, C₂H₄ selective adsorption ability, and structural stability were obviously enhanced due to the incorporation of the ketone functional group, which were further verified by isosteric heats of adsorption (Q_st), GCMC modeling, and breakthrough experiments.