Jump to main content
Jump to site search

Issue 24, 2017
Previous Article Next Article

A porous metal–organic framework based on an asymmetric angular diisophthalate for selective adsorption of C2H2 and CO2 over CH4

Author affiliations

Abstract

A new copper-based metal–organic framework [Cu2L(H2O)2]·5DMF·2H2O (ZJNU-56) has been solvothermally synthesized using a custom-designed asymmetric rigid bent diisophthalate ligand, 5,5′-(1-amine-naphthyl-2,4-diyl) diisophthalic acid (H4L), and structurally determined by single-crystal X-ray diffraction. ZJNU-56 features a three-dimensional (3D) open framework incorporating three different types of metal–organic cages and two distinct types of one-dimensional channels. With a moderate BET surface area of 1655 m2 g−1, optimized pore structure, and functional sites (open copper sites and Lewis basic amine groups) on the cage surface, ZJNU-56 after desolvation exhibits highly selectively adsorptive separation of C2H2 and CO2 over CH4 under ambient conditions. At 298 K, the predicted IAST selectivities are 35.7–72.9 for an equimolar C2H2/CH4 gas mixture and 6.8–7.0 for an equimolar CO2/CH4 gas mixture at pressures varying from 1 to 109 kPa, respectively, which are among the highest reported to date for copper-based MOFs.

Graphical abstract: A porous metal–organic framework based on an asymmetric angular diisophthalate for selective adsorption of C2H2 and CO2 over CH4

Back to tab navigation

Supplementary files

Publication details

The article was received on 22 Apr 2017, accepted on 22 May 2017 and first published on 23 May 2017


Article type: Paper
DOI: 10.1039/C7DT01450C
Citation: Dalton Trans., 2017,46, 7813-7820
  •   Request permissions

    A porous metal–organic framework based on an asymmetric angular diisophthalate for selective adsorption of C2H2 and CO2 over CH4

    J. Jiao, D. Jiang, F. Chen, D. Bai and Y. He, Dalton Trans., 2017, 46, 7813
    DOI: 10.1039/C7DT01450C

Search articles by author

Spotlight

Advertisements