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Facilitated propylene transport in mixed matrix membranes containing ZIF-8@Agmim core-shell hybrid material
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  • Xiaoquan Feng,
  • Donglai Peng,
  • Meixia Shan,
  • Xinpu Niu,
  • Ya-Tao Zhang
Xiaoquan Feng

Corresponding Author:feng1517@outlook.com

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Donglai Peng
Zhengzhou University of Light Industry
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Meixia Shan
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Ya-Tao Zhang
Zhengzhou University
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Abstract

The ZIF-8@Agmim core-shell hybrid material was synthesized via a favorable post-modification method of ion exchange (PMIE). This infrequent ZIF-8@Agmim core-shell structure maintains a well- integrated pore size that is almost the same as ZIF-8. The similar equilibrium isotherms with ZIF-8 and better kinetic separation towards propylene/propane than ZIF-8 render ZIF-8@Agmim to be an interesting candidate for propylene/propane separation. The core-shell hybrid nanomaterial was further used as nanofillers in the polymer of intrinsic microporosity matrix (PIM-1) for propylene/propane separation. The resultant MMMs exhibited a simultaneous increase in C3H6 permeability and C3H6/C3H8 ideal selectivity compared to pure polymer membrane owing to a synergistic effect of molecular sieving from ZIF-8 and π-complexation of Ag+ with propylene. The separation performance of the prepared MMM surpasses the upper bound line of polymer membranes. Furthermore, the hybrid materials possess superb photochemical stability and the corresponding MMMs exhibit excellent anti-aging property and long-term stability.
11 Oct 2021Submitted to AIChE Journal
12 Oct 2021Submission Checks Completed
12 Oct 2021Assigned to Editor
18 Oct 2021Reviewer(s) Assigned
26 Jan 2022Editorial Decision: Revise Major
09 Feb 20221st Revision Received
10 Feb 2022Submission Checks Completed
10 Feb 2022Assigned to Editor
13 Feb 2022Reviewer(s) Assigned
26 Mar 2022Editorial Decision: Accept
Aug 2022Published in AIChE Journal volume 68 issue 8. 10.1002/aic.17707