High-Throughput Synthesis of Zeolitic Imidazolate Frameworks and Application to CO 2 Capture

American Association for the Advancement of Science (AAAS) - Tập 319 Số 5865 - Trang 939-943 - 2008
Rahul Banerjee1,2, Anh Phan1,2, Bo Wang1,2, Carolyn B. Knobler1,2, Hiroyasu Furukawa1,2, M. O’Keeffe1,2, Omar M. Yaghi1,2
1Center for Reticular Chemistry at California NanoSystems Institute, Department of Chemistry and Biochemistry, University of California at Los Angeles, 607 East Charles E. Young Drive, Los Angeles, CA 90095, USA.
2Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ 85287, USA

Tóm tắt

A high-throughput protocol was developed for the synthesis of zeolitic imidazolate frameworks (ZIFs). Twenty-five different ZIF crystals were synthesized from only 9600 microreactions of either zinc(II)/cobalt(II) and imidazolate/imidazolate-type linkers. All of the ZIF structures have tetrahedral frameworks: 10 of which have two different links (heterolinks), 16 of which are previously unobserved compositions and structures, and 5 of which have topologies as yet unobserved in zeolites. Members of a selection of these ZIFs (termed ZIF-68, ZIF-69, and ZIF-70) have high thermal stability (up to 390°C) and chemical stability in refluxing organic and aqueous media. Their frameworks have high porosity (with surface areas up to 1970 square meters per gram), and they exhibit unusual selectivity for CO 2 capture from CO 2 /CO mixtures and extraordinary capacity for storing CO 2 : 1 liter of ZIF-69 can hold ∼83 liters of CO 2 at 273 kelvin under ambient pressure.

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The work was supported by Badische Anilin und Soda Fabrik (BASF) Ludwigshafen for synthesis the U.S. Department of Energy (DEFG0206ER15813) for adsorption and separations studies and the U.S. Department of Defense (W911NF-061-0405) for equipment used for breakthrough experiments. Crystallographic data for the structures reported in this paper have been deposited with the Cambridge Crystallographic Data Centre under reference numbers CCDC 671067 to 671089. These data can be obtained free of charge via www.ccdc.cam.ac.uk/conts/retrieving.html (or from the Cambridge Crystallographic Data Centre 12 Union Road Cambridge CB2 1EZ UK).

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American Association for the Advancement of Science (AAAS)

Tập 319 Số 5865

939-943

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