A cationic microporous metal-organic framework for highly selective separation of small hydrocarbons at room temperature

Authors
  • H. Xu
  • J. Cai
  • S. Xiang
  • Z. Zhang
  • C. Wu
  • X. Rao
  • Y. Cui
  • Y. Yang
  • R. Krishna
  • B. Chen
  • G. Qian
Publication date 2013
Journal Journal of Materials Chemistry. A
Volume | Issue number 1 | 34
Pages (from-to) 9916-9921
Organisations
  • Faculty of Science (FNWI) - Van 't Hoff Institute for Molecular Sciences (HIMS)
Abstract
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.
Document type Article
Note with Supplementary information
Language English
Published at https://doi.org/10.1039/c3ta12086d
Downloads
cationic_microporous.pdf (Final published version)
Permalink to this page
Back