Microporous 3D aluminum MOF doped into chitosan-based mixed matrix membranes for ethanol/water separation

Madhan Vinu, Souvik Pal, Jia Dian Chen, Yi Feng Lin*, Yu Lun Lai, Cheng Shiuan Lee, Chia Her Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

An aluminum metal–organic framework (Al-MOF), [Al(OH)(BPDC)] (DUT-5; BPDC = Biphenyl-4,4′-dicarboxylate), was synthesized using solvothermal reactions. The high surface area and micropores (approximately 1.2 nm) of DUT-5 were characterized using N2 gas sorption measurements. The thermal stability of DUT-5 and its phase purity were also investigated. The different amounts of DUT-5 (0.1, 0.15, and 0.2 wt%) were successfully incorporated into the chitosan (CS) polymer to prepare a mixed matrix membrane (MMM) for the pervaporation of water/ethanol at 25°C. In particular, when 0.15 wt% of DUT-5 was loaded, the DUT-5@CS MMMs displayed excellent permeability and selectivity in ethanol/water separation. The results indicated that compared with pristine chitosan membranes, the flux of DUT-5@CS membranes with 0.15 wt% loading significantly increased from 315 to 378 (g/m2 h−1) and the separation factor from 347 to 3,429. These promising results of the microporous Al-MOF doped into chitosan MMMs reveal its good application potential for the bio-ethanol separation processes.

Original languageEnglish
Pages (from-to)1165-1171
Number of pages7
JournalJournal of the Chinese Chemical Society
Volume66
Issue number9
DOIs
Publication statusPublished - 2019 Sep 1
Externally publishedYes

Keywords

  • chitosan membranes
  • metal–organic framework
  • microporous materials
  • mixed-matrix membrane
  • pervaporation

ASJC Scopus subject areas

  • Chemistry(all)

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