BÆRERKATALYSATOR OG FREMGANGSMÅDE TIL FREMSTILLING AF ET PORØST GRAFITISERET CARBONMATERIALE BELAGT MED METALNANOPARTIKLER

BÆRERKATALYSATOR OG FREMGANGSMÅDE TIL FREMSTILLING AF ET PORØST GRAFITISERET CARBONMATERIALE BELAGT MED METALNANOPARTIKLER

A known method for producing porous graphitized carbon material covered with metal nanoparticles involves infiltrating a porous template framework of inorganic material with a carbon precursor. After thermal treatment of the precursor, the template is removed and the particulate porous carbon materi...

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Bibliographische Detailangaben
Hauptverfasser: NEUMANN, Christian, LÄSSIG, Walter, PRZIBILLA, Gabriele, Neuschütz, Mark, WALTER, Richard, Breuer, Christian, EWEINER, Florian, BECKER, Jörg, KIEMEL, Rainer, PIHAN, Sascha
Format: Patent
Sprache:dan
Schlagworte:
BASIC ELECTRIC ELEMENTS
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
ELECTRICITY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
THEIR RELEVANT APPARATUS
TRANSPORTING
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Zusammenfassung:A known method for producing porous graphitized carbon material covered with metal nanoparticles involves infiltrating a porous template framework of inorganic material with a carbon precursor. After thermal treatment of the precursor, the template is removed and the particulate porous carbon material is covered with a catalytically active substance. According to the invention, in order to keep the proportion of the noble metal loading at a low level, the thermal treatment of the precursor first involves carbonization, and the material is not graphitized into graphitized, particulate, porous carbon material until the template has been removed. The graphitized carbon material has a hierarchical pore structure with a pore volume of at least 0.5 cm3/g and at least 75% of the pore volume is apportioned to macropores with, size 100 to 5000 nm. Before covering with catalytically active substance, the carbon material is subjected to an activation treatment in an oxidizing atmosphere.