275046 Synthesis and Characterization of ZIF-8 Membrane with Exceptionally High Propylene / Propane Separation Performance

Tuesday, October 30, 2012: 4:35 PM
403 (Convention Center )
Hyuk Taek Kwon, chemical engineering, texas A & M university, college station, TX, Sagar Lonkar, chemical engineering, Texas A & M university and Hae-Kwon Jeong, Chemical Engineering, Texas A & M University, College Station, TX

Synthesis and characterization of ZIF-8 Membrane with exceptionally high propylene / propane separation performance

Hyuk Taek Kwon1, Sagar Lonkar1, and Hae-Kwon Jeong*1,2

1Artie McFerrin Department of Chemical Engineering and 2Materials Science and Engineering Program

Texas A&M University, College Station, TX 77843-3122

* Corresponding author: hjeong7@mail.che.tamu.edu

Metal-organic-frameworks (MOFs) have attracted intense research interest due to their potential application such as small-molecule separation1, storage2, catalysis3, and others. Membrane-based gas separation is one of the most intriguing applications where MOFs can play a role due to their regular and sub-molecular size of pore structure, recognition and binding ability of specific molecules4.

Several MOF membranes have been synthesized and tested for gas separation5. Despite their potentials, most of MOF membranes reported showed rather unimpressive separation performances mainly due to the flexible nature of their frameworks6 as well as the likely poor microstructure. Recently Lai and co-worker have synthesized ZIF-8 membrane with exceptional hydrocarbon separation capability. The superior performance is likely due to improved microstructure7, confirming the importance of controlling microstructure. Besides, there is also a strong need to develop a new synthesis method to prepare MOF membranes in a commercially-viable manner.

Here, we would like to present one-step in-situ route to prepare ZIF-8 membrane, which is highly reproducible. The formation of defect-free ZIF-8 membrane was completed within a couple of hours with exceptional mechanical stability. Most importantly, the membranes showed the exceptionally high separation performance of propylene / propane. We will also present synthesis of other MOF membranes such as HKUST-1 and ZIF-7.

References and Notes

1.         J.-R. Li, R. J. Kuppler and H.-C. Zhou, Chemical Society Reviews 38 (5), 1477-1504 (2009).

2.         L. J. Murray, M. Dinca and J. R. Long, Chemical Society Reviews 38 (5), 1294-1314 (2009).

3.         J. Lee, O. K. Farha, J. Roberts, K. A. Scheidt, S. T. Nguyen and J. T. Hupp, Chemical Society Reviews 38 (5), 1450-1459 (2009).

4.         M. Eddaoudi, J. Kim, N. Rosi, D. Vodak, J. Wachter, M. O'Keeffe and O. M. Yaghi, Science 295 (5554), 469-472 (2002).

5.         M. Shah, M. C. McCarthy, S. Sachdeva, A. K. Lee and H.-K. Jeong, Industrial & Engineering Chemistry Research 51 (5), 2179-2199 (2011).

6.         H. Bux, F. Liang, Y. Li, J. Cravillon, M. Wiebcke and J. r. Caro, Journal of the American Chemical Society 131 (44), 16000-16001 (2009).

7.         Y. Pan and Z. Lai, Chemical Communications 47 (37), 10275-10277 (2011).

 


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