Ceramic Foam with Gradient of Porosity in Heterogeneous Catalysis
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Apr 28, 2011
app pub date -
May 13, 2009
filing date -
May 13, 2008
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Abstract
/g, a grain size between 100 nm and 20 microns and a skeleton densification above 95%. One process to obtain this architecture can be based on the preparation of a ceramic foam with porosity gradient comprising: choosing at least one polymeric sponge, impregnation of the polymeric sponge by a ceramic slurry, drying of the impregnated sponge, pyrolysing the organics including the polymeric sponge, and sintering, and characterized in that we realize a pre-step to obtain a continuous and/or discontinuous porosity gradient.
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