Study of silica templates in the rice husk and the carbon-silica nanocomposites produced from rice husk
作者： Yu.V. Larichev , P.M. Yeletsky , V.A. Yakovlev
DOI: 10.1016/J.JPCS.2015.07.025
关键词: Fluidized bed 、 Particle 、 Carbon 、 Chemical engineering 、 Materials science 、 Nanocomposite 、 Husk 、 Nanoparticle 、 Particle size 、 Carbonization
摘要: Abstract Carbon–silica nanocomposites obtained by rice husk carbonization in a fluidized-bed reactor using deep oxidation copper–chromium catalyst were studied. Dispersion characteristics of the silica phase these systems determined small-angle X-ray scattering (SAXS) full contrast technique. SiO2 was found initial as compact nanoparticles having wide size distribution. This distribution consists narrow fraction with particle sizes from 1 to 7 nm and wider 8 22 nm. Oxidative heat treatment fluidized bed presence decreased small particles increased large ones. It demonstrated that carbon matrix can be selectively for deliberate design porous materials desired properties.
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