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Polymer-Derived Ordered Mesoporous Silicon-Boron-Carbon-Nitrogen (Si/B/C/N) Ceramics

S. Bernard, P. Miele

Journal of Ceramic Science and Technology, Vol. 4, No. 2 (2013), pp. 113-122

DOI: 10.4416/JCST2013-00001

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Abstract

Ordered mesoporous silicon-based non-oxide ceramics are attracting increasing interest thanks to their outstanding high-temperature stability and their anticipated robustness. In this category of materials, periodic ordered silicon-boron-carbon-nitrogen (Si/B/C/N) frameworks represent an excellent opportunity for use in harsh environments in key fields like heterogeneous catalysis and/or hydrogen storage. In this review, the nanocasting approach to these materials is summarized on the basis of the synthesis of boron-modified polysilazanes, the solution infiltration of carbonaceous and silica templates, the pyrolysis of the composites followed by the template removal step. The as-obtained micron-sized powders are characterized and potential applications discussed.

Keywords

SiBCN, mesoporous powder, non-oxide ceramics, polymer-derived ceramics, nanostructured ceramics

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