Zeolitic imidazolate framework membranes made by ligand-induced permselectivation

Xiaoli Ma, Prashant Kumar, Nitish Mittal, Alexandra Khlyustova, Prodromos Daoutidis, Andre Mkhoyan, Michael Tsapatsis

Research output: Contribution to journalArticlepeer-review

359 Scopus citations

Abstract

Zeolitic imidazolate framework (ZIF) membranes are emerging as a promising energy-efficient separation technology. However, their reliable and scalable manufacturing remains a challenge. We demonstrate the fabrication of ZIF nanocomposite membranes by means of an all-vapor-phase processing method based on atomic layer deposition (ALD) of ZnO in a porous support followed by ligand-vapor treatment. After ALD, the obtained nanocomposite exhibits low flux and is not selective, whereas after ligand-vapor (2-methylimidazole) treatment, it is partially transformed to ZIF and shows stable performance with high mixture separation factor for propylene over propane (an energy-intensive high-volume separation) and high propylene flux. Membrane synthesis through ligand-induced permselectivation of a nonselective and impermeable deposit is shown to be simple and highly reproducible and holds promise for scalability.

Original languageEnglish (US)
Pages (from-to)1008-1011
Number of pages4
JournalScience
Volume361
Issue number6406
DOIs
StatePublished - Sep 7 2018

Bibliographical note

Publisher Copyright:
© 2017 The Authors.

MRSEC Support

  • Shared

PubMed: MeSH publication types

  • Journal Article
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

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