Biswas, Shyam Prosad

Van Der Voort, Pascal

English

Ghent University Academic Bibliography

 Structural, Sorption and Thermal Analyses of Porous Isostructural MIL-47-X (X = -F, -Cl, -Br, -CH3, -OH) Metal-Organic Frameworks Shyam Biswas and Pascal Van Der Voort; Department of Inorganic and Physical Chemistry, COMOC: Center for Ordered Materials, Organometallics and Catalysis Ghent University, Ghent, Belgium  Metal-organic frameworks (MOFs) have attracted a great deal of interest due to their applications in gas storage/separation and catalysis.[1] The functionalization of such solids achieved either by employing pre-functionalized linkers or by postsynthetic modification, affects their sorption, selectivity or breathing property as well as thermal and chemical stability.[2] Herein, we report on the structural, sorption and thermal analyses of functionalized MIL-47-X (X = -F, -Cl, -Br, -CH3, -OH) solids, prepared by using modified terephthalate linkers. The compounds were synthesized in a rapid microwave-assisted hydrothermal route (170 ºC, 30 min, 100 W). Thermogravimetric analyses show high thermal stability (330-385 ºC). The cell parameter determination from X-ray powder diffraction (XRPD) data (Fig. 1a) confirms their structural similarity with parent MIL-47. The thermally activated solids exhibit significant microporosity (Fig. 1b, SBET = 305-872 m2 g-1).                           Fig. 1. (left) XRPD patterns, and (right) N2 sorption isotherms for MIL-47-X solids.  [1] (a) Chem. Soc. Rev. 2009, 38, 1201-1508. (b) Chem. Rev. 2012, 112, 673-1268. [2] S. Biswas, T. Ahnfeldt, N. Stock, Inorg. Chem. 2011, 50, 9518-9526.  

Structural, sorption and thermal analyses of porous isostructural MIL-47-X (X = -F, -Cl, -Br, -CH3, -OH) metal-organic frameworks

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Structural, sorption and thermal analyses of porous isostructural MIL-47-X (X = -F, -Cl, -Br, -CH3, -OH) metal-organic frameworks

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Ghent University Academic Bibliography