Tailoring the Transport Properties of Zeolitic Imidazolate Frameworks by Post-Synthetic Thermal Modification

Chen Zhang; William J. Koros

doi:10.1021/acsami.5b07769

Tailoring the Transport Properties of Zeolitic Imidazolate Frameworks by Post-Synthetic Thermal Modification

Chen Zhang, William J. Koros

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

Understanding how to control transport properties of zeolitic imidazolate frameworks (ZIFs) is critical to extend ZIF-based membranes and adsorbents to a wide spectrum of gas and vapor separations. In this work, we report a facile post-synthetic thermal modification (PSTM) technique to tailor ZIFs' transport properties by balancing diffusivity and diffusion selectivity. With controllable dissociation of framework methyl groups from a precursor ZIF (ZIF-8), we have prepared thermally modified ZIFs showing substantially increased n-butane diffusivity and attractive n/iso-butane diffusion selectivity. Hybrid ZIF/polymer mixed-matrix membranes formed using these thermally modified ZIFs are expected to deliver attractive butane isomer separation performance. Membranes based on such materials can potentially be used to retrofit refinery alkylation units for producing premium gasoline blending stocks.

Original language	English (US)
Pages (from-to)	23407-23411
Number of pages	5
Journal	ACS Applied Materials & Interfaces
Volume	7
Issue number	42
DOIs	https://doi.org/10.1021/acsami.5b07769
State	Published - 2015
Externally published	Yes

ASJC Scopus subject areas

General Materials Science

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10.1021/acsami.5b07769

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title = "Tailoring the Transport Properties of Zeolitic Imidazolate Frameworks by Post-Synthetic Thermal Modification",

abstract = "Understanding how to control transport properties of zeolitic imidazolate frameworks (ZIFs) is critical to extend ZIF-based membranes and adsorbents to a wide spectrum of gas and vapor separations. In this work, we report a facile post-synthetic thermal modification (PSTM) technique to tailor ZIFs' transport properties by balancing diffusivity and diffusion selectivity. With controllable dissociation of framework methyl groups from a precursor ZIF (ZIF-8), we have prepared thermally modified ZIFs showing substantially increased n-butane diffusivity and attractive n/iso-butane diffusion selectivity. Hybrid ZIF/polymer mixed-matrix membranes formed using these thermally modified ZIFs are expected to deliver attractive butane isomer separation performance. Membranes based on such materials can potentially be used to retrofit refinery alkylation units for producing premium gasoline blending stocks.",

author = "Chen Zhang and Koros, {William J.}",

note = "KAUST Repository Item: Exported on 2021-11-04 Acknowledged KAUST grant number(s): KUS-I1-011-21 Acknowledgements: W.J.K. acknowledges financial support from Roberto C. Goizueta, Chair for Excellence in Chemical Engineering, King Abdullah University of Science and Technology (Award KUS-I1-011-21), and Office of Basic Energy Science of the U.S. Department of Energy (Grant DE-FG02-04ER15510). This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

year = "2015",

doi = "10.1021/acsami.5b07769",

language = "English (US)",

volume = "7",

pages = "23407--23411",

journal = "ACS Applied Materials & Interfaces",

issn = "1944-8244",

publisher = "American Chemical Society",

number = "42",

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T1 - Tailoring the Transport Properties of Zeolitic Imidazolate Frameworks by Post-Synthetic Thermal Modification

AU - Zhang, Chen

AU - Koros, William J.

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PY - 2015

Y1 - 2015

N2 - Understanding how to control transport properties of zeolitic imidazolate frameworks (ZIFs) is critical to extend ZIF-based membranes and adsorbents to a wide spectrum of gas and vapor separations. In this work, we report a facile post-synthetic thermal modification (PSTM) technique to tailor ZIFs' transport properties by balancing diffusivity and diffusion selectivity. With controllable dissociation of framework methyl groups from a precursor ZIF (ZIF-8), we have prepared thermally modified ZIFs showing substantially increased n-butane diffusivity and attractive n/iso-butane diffusion selectivity. Hybrid ZIF/polymer mixed-matrix membranes formed using these thermally modified ZIFs are expected to deliver attractive butane isomer separation performance. Membranes based on such materials can potentially be used to retrofit refinery alkylation units for producing premium gasoline blending stocks.

AB - Understanding how to control transport properties of zeolitic imidazolate frameworks (ZIFs) is critical to extend ZIF-based membranes and adsorbents to a wide spectrum of gas and vapor separations. In this work, we report a facile post-synthetic thermal modification (PSTM) technique to tailor ZIFs' transport properties by balancing diffusivity and diffusion selectivity. With controllable dissociation of framework methyl groups from a precursor ZIF (ZIF-8), we have prepared thermally modified ZIFs showing substantially increased n-butane diffusivity and attractive n/iso-butane diffusion selectivity. Hybrid ZIF/polymer mixed-matrix membranes formed using these thermally modified ZIFs are expected to deliver attractive butane isomer separation performance. Membranes based on such materials can potentially be used to retrofit refinery alkylation units for producing premium gasoline blending stocks.

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DO - 10.1021/acsami.5b07769

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EP - 23411

JO - ACS Applied Materials & Interfaces

JF - ACS Applied Materials & Interfaces

IS - 42

ER -

Tailoring the Transport Properties of Zeolitic Imidazolate Frameworks by Post-Synthetic Thermal Modification

Abstract

ASJC Scopus subject areas

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