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 | |
| State | Published - 2015 |
| Externally published | Yes |
Bibliographical note
KAUST Repository Item: Exported on 2021-11-04Acknowledged 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.
ASJC Scopus subject areas
- General Materials Science