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Structural changes in carbon aerogels with high temperature treatment
Authors:Yohko Hanzawa  Hiroaki Hatori  Noriko YoshizawaYoshio Yamada
Affiliation:a Japan Science and Technology Corporation, Kawaguchi Center Building 12 F, 4-1-8 Hon-cho, Kawaguchi, Saitama 332-0012, Japan
b National Institute of Advanced Industrial Science and Technology, 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
Abstract:The structural change of carbon aerogels at high temperatures up to 2800°C has been investigated. Change in microtexture of fine particles, which constitute carbon aerogels derived from phenolic resin, was of a typical non-graphitized carbon. The microporosity decreased with an increase of heat-treatment temperature, and disappeared at 2000°C. The mesoporosity still remained even after heat-treatment up to 2800°C, though 50% of mesopore volume was lost because of the fusion of the particles with the change of carbon microtexture.
Keywords:A  Carbon aerogel  B  Heat treatment  C  Adsorption  D  Porosity  Textures
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