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  • Title: UiO-67-type Metal-Organic Frameworks with Enhanced Water Stability and Methane Adsorption Capacity.
    Author: Øien-Ødegaard S, Bouchevreau B, Hylland K, Wu L, Blom R, Grande C, Olsbye U, Tilset M, Lillerud KP.
    Journal: Inorg Chem; 2016 Mar 07; 55(5):1986-91. PubMed ID: 26894842.
    Abstract:
    The structure and properties of two new UiO-67-type metal-organic frameworks, along with their linker synthesis and powder and single crystal synthesis, are presented. The new MOFs, UiO-67-Me and UiO-67-BN, are based on 3,3'-dimethylbiphenyl and 1,1'-binaphthyl linker scaffolds, and show a much higher stability to water than the thoroughly investigated UiO-67, which is based on the biphenyl scaffold. On the basis of structure models obtained from single crystal X-ray diffraction, it is seen that these linkers are partly shielding the Zr cluster. The new materials have higher density than UiO-67, but show a higher volumetric adsorption capacity for methane. UiO-67-BN exhibits excellent reversible water sorption properties, and enhanced stability to aqueous solutions over a wide pH range; it is to the best of our knowledge the most stable Zr-MOF that is isostructural to UiO-67 in aqueous solutions.
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