- A cationic microporous metal-organic framework for highly selective separation of small hydrocarbons at room temperature
- Journal of Materials Chemistry. A
- Volume | Issue number
- 1 | 34
- Pages (from-to)
- Document type
- Faculty of Science (FNWI)
- Van 't Hoff Institute for Molecular Sciences (HIMS)
A new three-dimensional cationic metal-organic framework Zn8O(EDDA)(4)(ad)(4)center dot(HEDDA)(2)center dot 6DMF center dot 27H(2)O (ZJU-48; H(2)EDDA (E)-4,4'-(ethene-1,2-diyl)dibenzoic acid; ad adenine) was solvothermally synthesized and structurally characterized. ZJU-48 features a three-dimensional structure with a cationic skeleton and has one-dimensional pores along the c axis of about 9.1 x 9.1 angstrom(2). The activated ZJU-48a exhibits a BET surface area of 1450 m(2)g(-1). The structural features of the charged skeleton of ZJU-48a have enabled its stronger charge-induced interaction with C-2 hydrocarbons than with C-1 methane, resulting in highly selective gas sorption of C-2 hydrocarbons over CH4 with the adsorption selectivity over 6 at 298 K. The separation feasibility has been further established by the simulated breakthrough and pulse chromatographic experiments, thus methane can be readily separated from their quaternary mixtures at room temperature.
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