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A NbO-type MOF based on an aromatics-rich and N-functionalized diisophthalate ligand for high-performance acetylene storage and purification

Abstract

A porous MOF ZJNU-93 based on a custom-designed diisophthalate ligand bearing aromatics-rich backbone and N-functionalized sites was solvothermally synthesized and fully characterized. Single-crystal X-ray diffraction studies revealed that ZJNU-93 is a three-dimensional (4,4)-connected NbO-type network composed of dicopper paddlewheel units and organic linkers as 4-connected building blocks. Furthermore, gas adsorption properties with respect to C2H2, CO2 and CH4 were systematically studied, revealing its promising utility as an adsorbent for the storage as well as separation and purification of acetylene. More specifically, the C2H2 uptake capacity reaches 164.0 cm3 (STP) g-1, while the estimated C2H2/CO2 and C2H2/CH4 adsorption selectivities are as high as 4.5 and 34.4 at 298 K and 1 atm. ZJNU-93 represents a rare MOF displaying high storage and separation capacity at the same time.

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Publication details

The article was received on 16 Sep 2018, accepted on 05 Oct 2018 and first published on 05 Oct 2018


Article type: Paper
DOI: 10.1039/C8CE01585F
Citation: CrystEngComm, 2018, Accepted Manuscript
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    A NbO-type MOF based on an aromatics-rich and N-functionalized diisophthalate ligand for high-performance acetylene storage and purification

    S. Li, J. Wu, X. Gao, M. He, Y. Wang, X. Wang and Y. He, CrystEngComm, 2018, Accepted Manuscript , DOI: 10.1039/C8CE01585F

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