Pt@MOF-177: synthesis, room-temperature hydrogen storage and oxidation catalysis.
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.
Proch
Sebastian
S
Lehrstuhl für Anorganische Chemie II, Universität Bayreuth, Universitätsstrasse 30, 95440 Bayreuth, Germany
Herrmannsdörfer
Justus
J
Kempe
Rhett
R
Kern
Christoph
C
Jess
Andreas
A
Seyfarth
Lena
L
Senker
Jürgen
J
D000438:Alcohols / Q000737:chemistry; D000447:Aldehydes / Q000138:chemical synthesis / Q000737:chemistry; D002384:Catalysis; D006859:Hydrogen / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods / Q000592:standards; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry; D010316:Particle Size; D010984:Platinum / Q000737:chemistry*; D012015:Reference Standards; D013499:Surface Properties; D013696:Temperature
D000438:Alcohols; D000447:Aldehydes; D009942:Organometallic Compounds; D010984:Platinum; D006859:Hydrogen; D010100:Oxygen