Stability improvement of Cu-3(BTC)(2) metal-organic frameworks under steaming conditions by encapsulation of a Keggin polyoxometalate

Center for Surface Chemistry and Catalysis, Department of Microbial and Molecular Systems, KU Leuven, Belgium 3000.
Chemical Communications (Impact Factor: 6.83). 06/2011; 47(28):8037-9. DOI: 10.1039/c1cc12341f
Source: PubMed


Cu(3)(BTC)(2) with an incorporated Keggin polyoxometalate was demonstrated to be stable under steaming conditions up to 483 K, while the isostructural HKUST-1 degrades and transforms into [Cu(2)OH(BTC)(H(2)O)](n)·2nH(2)O from 343 K onwards.

Download full-text


Available from: Breynaert Eric, Aug 11, 2014
  • Source
    • "In general, the chemical stabilities of Cu-paddlewheel based MOFs were improved compared to Zn 4 (í µí¼‡ 4 -O) based MOFs but are still insufficient for certain applications. For example, HKUST-1 was reported to undergo framework collapse under steaming conditions at temperatures above 343 K [12] "
    [Show abstract] [Hide abstract]
    ABSTRACT: Metal-organic frameworks (MOFs) are a new category of advanced porous materials undergoing study by many researchers for their vast variety of both novel structures and potentially useful properties arising from them. Their high porosities, tunable structures, and convenient process of introducing both customizable functional groups and unsaturated metal centers have afforded excellent gas sorption and separation ability, catalytic activity, luminescent properties, and more. However, the robustness and reactivity of a given framework are largely dependent on its metal-ligand interactions, where the metal-containing clusters are often vulnerable to ligand substitution by water or other nucleophiles, meaning that the frameworks may collapse upon exposure even to moist air. Other frameworks may collapse upon thermal or vacuum treatment or simply over time. This instability limits the practical uses of many MOFs. In order to further enhance the stability of the framework, many different approaches, such as the utilization of high-valence metal ions or nitrogen-donor ligands, were recently investigated. This review details the efforts of both our research group and others to synthesize MOFs possessing drastically increased chemical and thermal stability, in addition to exemplary performance for catalysis, gas sorption, and separation.
    Full-text · Article · Sep 2014
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: A Cu(II)-phenanthroline connected Strandberg-type polyoxometalate based proton conducting MOF, Cu(3)Mo(5)P(2), that contains one dimensional parallel water channels has been reported. Cu(3)Mo(5)P(2) shows proton conduction at room temperature as well as elevated temperature.
    Full-text · Article · Nov 2011 · Chemical Communications
  • [Show abstract] [Hide abstract]
    ABSTRACT: Synthesis of Metal-Organic Frameworks (MOF), highlighting routes to various MOF topologies, morphologies, and composites, is discussed. A systematic High-throughput (HT) investigation of Ni-based paddle wheel containing MOFs was conducted using H3BTC, H3BTB, and the mixedlinker system H2BDC/DABCO. The kinetics of crystallizations of both MOFs was examined by the Gualtieri model, which allowed separation of the nucleation and growth regimes. In a recent report on IRMOF-1, the MW-assisted method yielded higher quality crystals with better CO 2 adsorption properties, compared to the ambient pressure dynamic CE synthesis. Zn-based, mixed-linker MOFs with the composition [M 2(dicarboxylate) 2 (diamine)] exhibit pillared-layered structures, i.e., 2D metal carboxylate sheets containing inorganic paddle wheel units are pillared by ditopic amines.
    No preview · Article · Nov 2011 · Chemical Reviews
Show more