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Crystals 2019, 9(1), 14; https://doi.org/10.3390/cryst9010014

Zeolitic Imidazolate Framework Membranes for Light Olefin/Paraffin Separation

1,* and 2,*
1
Department of Materials Science and Engineering, University of Wisconsin-Milwaukee, Milwaukee, WI 53211, USA
2
School of Environment and Chemical Engineering, Foshan University, Foshan 528000, China
*
Authors to whom correspondence should be addressed.
Received: 9 November 2018 / Revised: 18 December 2018 / Accepted: 21 December 2018 / Published: 25 December 2018
(This article belongs to the Special Issue MOF-Based Membranes)
Full-Text   |   PDF [6507 KB, uploaded 25 December 2018]   |  

Abstract

Propylene/propane and ethylene/ethane separations are performed by energy-intensive distillation processes, and membrane separation may provide substantial energy and capital cost savings. Zeolitic imidazolate frameworks (ZIFs) have emerged as promising membrane materials for olefin/paraffin separation due to their tunable pore size and chemistry property, and excellent chemical and thermal stability. In this review, we summarize the recent advances on ZIF membranes for propylene/propane and ethylene/ethane separations. Membrane fabrication methods such as in situ crystallization, seeded growth, counter-diffusion synthesis, interfacial microfluidic processing, vapor-phase and current-driven synthesis are presented. The gas permeation and separation characteristics and membrane stability are also discussed. View Full-Text
Keywords: metal-organic frameworks; zeolitic imidazolate frameworks; membranes; propylene/propane separation; ethylene/ethane separation metal-organic frameworks; zeolitic imidazolate frameworks; membranes; propylene/propane separation; ethylene/ethane separation
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Ma, X.; Liu, D. Zeolitic Imidazolate Framework Membranes for Light Olefin/Paraffin Separation. Crystals 2019, 9, 14.

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