Pt@MOF-177: synthesis, room-temperature hydrogen storage and oxidation catalysis |
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Authors: | Proch Sebastian Herrmannsdörfer Justus Kempe Rhett Kern Christoph Jess Andreas Seyfarth Lena Senker Jürgen |
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Institution: | 1. Lehrstuhl für Anorganische Chemie II, Universit?t Bayreuth, Universit?tsstrasse 30, 95440 Bayreuth (Germany), Fax: (+49)?921‐55‐2157;2. Lehrstuhl für Chemische Verfahrenstechnik, Universit?t Bayreuth, Universit?tsstrasse 30, 95440 Bayreuth (Germany);3. Lehrstuhl für Anorganische Chemie I, Universit?t Bayreuth, Universit?tsstrasse 30, 95440 Bayreuth (Germany) |
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Abstract: | The gas-phase loading of Zn(4)O(btb)(2)](8) (MOF-177; H(3)btb=1,3,5-benzenetribenzoic acid) with the volatile platinum precursor Me(3)PtCp'] (Cp'=methylcyclopentadienyl) was confirmed by solid state (13)C magic angle spinning (MAS)-NMR spectroscopy. Subsequent reduction of the inclusion compound Me(3)PtCp'](4)@MOF-177 by hydrogen at 100 bar and 100 degrees 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@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@MOF-177 towards the solvent- and base-free room temperature oxidation of alcohols in air has been tested and shows Pt@MOF-177 to be an efficient catalyst in the oxidation of alcohols. |
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Keywords: | hydrogen storage metal–organic frameworks nanoparticles oxidation platinum |
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