The gas-phase loading of (Zn4O(btb)2)8 (MOF-177; H3btb=1,3,5-benzenetribenzoic acid) with the volatile platinum precursor (Me3PtCp') (Cp'=methylcyclopentadienyl) was confirmed by solid state 13C magic angle spinning (MAS)-NMR spectroscopy. Subsequent reduction of the inclusion compound (Me3PtCp')4 rate at MOF-177 by hydrogen at 100 bar and 100 C for 24 h was carried out and gave rise to the formation of platinum nanoparticles in a size regime of 2-5 nm embedded in the unchanged MOF-177 host lattice as confirmed by transmission electron microscopy (TEM) micrographs and powder X-ray diffraction (PXRD). The room-temperature hydrogen adsorption of Pt rate at MOF-177 has been followed in a gravimetric fashion (magnetic suspension balance) and shows almost 2.5 wt % in the first cycle, but is decreased down to 0.5 wt % in consecutive cycles. The catalytic activity of Pt rate at MOF-177 towards the solvent- and base-free room temperature oxidation of alcohols in air has been tested and shows Pt rate at MOF-177 to be an efficient catalyst in the oxidation of alcohols.
Pt rate at MOF-177: synthesis, room-temperature hydrogen storage and oxidation catalysis
Chemistry - A European Journal ; 14 , 27 ; 8204-8212
2008
9 Seiten, 33 Bilder, 1 Tabelle, 113 Quellen
Article (Journal)
English
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