Ultrafast Semi-Solid Processing of Highly Durable ZIF-8 Membranes for Propylene/Propane Separation

Qiang Ma, Kai Mo, Shushu Gao, Yafang Xie, Jinzhao Wang, Hua Jin, Armin Feldhoff, Shutao Xu, Jerry Y.S. Lin, Yanshuo Li

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

ZIF-8 membranes have emerged as the most promising candidate for propylene/propane (C3H6/C3H8) separation through its precise molecular sieving characteristics. The poor reproducibility and durability, and high cost, thus far hinder the scalable synthesis and industrial application of ZIF-8 membranes. Herein, we report a semi-solid process featuring ultrafast and high-yield synthesis, and outstanding scalability for reproducible fabrication of ZIF-8 membranes. The membranes show excellent C3H6/C3H8 separation performance in a wide temperature and pressure range, and remarkable stability over 6 months. The ZIF-8 membrane features dimethylacetamide entrapped ZIF-8 crystals retaining the same diffusion characteristics but offering enhanced adsorptive selectivity for C3H6/C3H8. The ZIF-8 membrane was prepared on a commercial flat-sheet ceramic substrate. A prototypical plate-and-frame membrane module with an effective membrane area of about 300 cm2 was used for efficient C3H6/C3H8 separation.

Original languageEnglish (US)
Pages (from-to)21909-21914
Number of pages6
JournalAngewandte Chemie - International Edition
Volume59
Issue number49
DOIs
StatePublished - Dec 1 2020

Keywords

  • ZIF-8
  • membranes
  • plate-and-frame module
  • propylene/propane separation
  • semi-solid processing

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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