Nitridized porous silicon

NHE OCP ONO OPS PCD PDS PL PLE PMMA PP PP PS PSG PSL PTFE PVC PVDF normal hydrogen electrode (= SHE) open circuit potential oxide-nitride-oxide dielectric oxidized porous silicon photoconductive decay photothermal displacement spectroscopy photoluminescence photoluminescence excitation spectroscopy polymethyl methacrylate passivation potential polypropylene porous silicon phosphosilicate glass porous silicon layer polytetrafluoroethylene polyvinyl chloride polyvinylidene fluoride... 

Potassium loaded on a porous silicon nitride has been reported as a superbase catalyst. With appropriate pre-treatment, the catalyst was found to be highly active for 2,3-dimethylbut-l-ene isomerisation yielding 2,3-dimethylbut-2-ene in close to 100% selectivity. In order for high activity to be demonstrated, 30 wt% potassium amide was loaded by impregnation. A trace of Fc203 was also added on impregnation. A silicon nitride synthesised via a silicon diimide precursor which was pre-treated at 1000°C was found to be best and the catalyst was activated by heating in vacuo. The possibility that this resulted in active potassium nitride species via ... 

Materials made of silicon nitride, silicon oxynitride, or sialon-bonded silicon carbide have high thermal shock and corrosion resistance and may be used for pump parts, acid spray nozzles, and in aluminum reduction cells (156—159). A very porous silicon carbide foam has been considered for surface combustion burner plates and filter media. It can also be used as a substrate carrying materials such as boron nitride as planar diffusion source for... 

Kawai, C., and Yamakawa, A., Machinability of high-strength porous silicon nitride ceramic, J. Ceram. Soc. Jap., 106(11) 1135-1137 (1998). 

Carbon as fugitive additive for porous silicon nitride processing... 

In addition to dense monolithic ceramics, porous silicon nitrides are gaining more importance in technological applications [24], Some porous silicon nitrides with high specific surface area have already been applied as catalysis supports, hot gas filters and biomaterials [25], There is an emerging tendency to facilitate silicon nitride as biomaterial, because of specific mechanical properties that are important for medical applications [25], Moreover, in a recent study it was shown that silicon nitride is a non-toxic, biocompatible ceramic which has the ability to propagate human bone cells in vitro [25], Bioglass and silicon nitride composites have already been realized to combine... 

Yang, J.-F., Deng, Z.-Y., Ohji, T., Fabrication and characterisation of porous silicon nitride ceramics using Yb203 as sintering additive, J. Eur. Ceram. Soc., 23, 2003, 371-378. 

Non-oxide ceramic materials such as silicon carbide has been used commercially as a membrane support material and studied as a potential membrane material. Silicon nitride has also the potential of being a ceramic membrane material. In fact, both materials have been used in other high-temperature structural ceramic applications. Oxidation resistance of these non-oxide ceramics as membrane materials for membrane reactor applications is obviously very important. The oxidation rate is related to the reactive surface area thus oxidation of porous non-oxide ceramics depends on their open porosity. The generally accepted oxidation mechanism of porous silicon nitride materials consists of two... 

Porous Silicon Carbide and Gallium Nitride Epitaxy, Catalysis, and Biotechnology Applications Edited by Randall M. Feenstra and Colin E.C. Wood 2008 John Wiley Sons, Ltd... 

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