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Synthesis of Hierarchically Porous SiCN Materials and Pd Catalysts based on it for the Oxidation of Methane
Author(s) -
Schwarz Stefan,
Friedrich Martin,
Motz Günter,
Kempe Rhett
Publication year - 2015
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201500559
Subject(s) - materials science , mesoporous material , catalysis , chemical engineering , porosity , methane , ceramic , carbon fibers , silicon , specific surface area , bet theory , polymer , palladium , incipient wetness impregnation , nanotechnology , composite material , organic chemistry , metallurgy , chemistry , selectivity , composite number , engineering
Polymer derived silicon carbon nitride (SiCN) ceramics are versatile materials with broad potential applications in industry and technology. Their high stability towards thermomechanical and chemical stress makes them a promising support material in heterogeneous catalysis. Due to the challenging process of synthesizing high‐surface‐area porous SiCN only a few examples of porous SiCN based catalysts are reported. Herein, we present a simple and efficient route to obtain mesoporous SiCN containing materials by impregnation of activated carbon with a polymeric silazane precursor. Oxidative removal of the template yields high‐surface‐area SiCN materials with a BET surface area from 200–470 m 2 · g –1 and high content of mesopores from 70–99 %. By incipient wetness impregnation with palladium, efficient catalysts for the total oxidation of methane were obtained.