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Pt@MOF‐177: Synthesis, Room‐Temperature Hydrogen Storage and Oxidation Catalysis
Author(s) -
Proch Sebastian,
Herrmannsdörfer Justus,
Kempe Rhett,
Kern Christoph,
Jess Andreas,
Seyfarth Lena,
Senker Jürgen
Publication year - 2008
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200801043
Subject(s) - catalysis , platinum , chemistry , magic angle spinning , hydrogen , powder diffraction , adsorption , hydrogen storage , nuclear chemistry , materials science , crystallography , inorganic chemistry , nuclear magnetic resonance spectroscopy , organic chemistry
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 °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.