Tracking thermal-induced amorphization of a zeolitic imidazolate framework via synchrotron in situ far-infrared spectroscopy
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چکیده
منابع مشابه
Amorphization of the prototypical zeolitic imidazolate framework ZIF-8 by ball-milling.
We report the rapid amorphization of the prototypical substituted zeolitic imidazolate framework, ZIF-8, by ball-milling. The resultant amorphous ZIF-8 (a(m)ZIF-8) possesses a continuous random network (CRN) topology with a higher density and a lower porosity than its crystalline counterpart. A decrease in thermal stability upon amorphization is also evident.
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Zeolitic imidazolate frameworks (ZIFs) are a new class of nanoporous compounds which consist of tetrahedral clusters of MN4 (M ) Co, Cu, Zn, etc.) linked by simple imidazolate ligands.1,2 As a subfamily of metal-organic frameworks (MOFs), ZIFs exhibit the tunable pore size and chemical functionality of classical MOFs. At the same time, they possess the exceptional chemical stability and rich st...
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Importance of Framework Flexibility and Guest-Induced Instability Pu Zhao,† Giulio I. Lampronti,† Gareth O. Lloyd,‡,∥ Michael T. Wharmby, Seb́astien Facq,† Anthony K. Cheetham, and Simon A. T. Redfern*,† †Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, United Kingdom ‡Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, ...
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The search for efficient water oxidation catalysts (WOCs) is of paramount importance in energy and environmental fields, but there exists no good non-noble catalyst that works under acidic and alkaline conditions. Intensive investigations have recently focused on cobalt based complex/solid catalysts. Here, we have introduced a new type of cobalt-based WOC made of metal-organic frameworks where ...
متن کاملMechanochemical dry conversion of zinc oxide to zeolitic imidazolate framework.
Mechanochemical dry conversion that only uses zinc oxide and an imidazole ligand proved to be effective and reliable for fabrication of a zeolitic imidazolate framework with a polycrystalline grain boundary and a core-shell structure. The zinc oxide crystals are converted into a zeolitic imidazolate framework to a depth of approx. 10 nm below the surface.
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ژورنال
عنوان ژورنال: Chemical Communications
سال: 2017
ISSN: 1359-7345,1364-548X
DOI: 10.1039/c7cc01985h