The structural change of carbon aerogels at high temperatures up to 2800 degreesC has been investigated. Change in microtexture of fine particles, which constitute carbon aerogels derived from phenolic resin, was of atypical non-graphitized carbon. The microporosity decreased with an increase of heat-treatment temperature, and disappeared at 2000 degreesC. The mesoporosity still remained even after heat-treatment up to 2800 degreesC, though 50% of mesopore volume was lost because of the fusion of the particles with the change of carbon microtexture. (C) 2002 Elsevier Science Ltd. All rights reserved.
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Sichuan Univ Sci & Engn, Dept Mat & Chem Engn, Zigong 643000, Peoples R ChinaSichuan Univ Sci & Engn, Dept Mat & Chem Engn, Zigong 643000, Peoples R China
Jin, Yongzhong
Li, Binghong
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China Natl Chem Corp, China Carbon Black Inst, Zigong 643000, Peoples R ChinaSichuan Univ Sci & Engn, Dept Mat & Chem Engn, Zigong 643000, Peoples R China
Li, Binghong
Zhang, Zhi
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China Natl Chem Corp, China Carbon Black Inst, Zigong 643000, Peoples R ChinaSichuan Univ Sci & Engn, Dept Mat & Chem Engn, Zigong 643000, Peoples R China
Zhang, Zhi
Liu, Min
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China Natl Chem Corp, China Carbon Black Inst, Zigong 643000, Peoples R ChinaSichuan Univ Sci & Engn, Dept Mat & Chem Engn, Zigong 643000, Peoples R China
Liu, Min
Fan, Zhengping
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China Natl Chem Corp, China Carbon Black Inst, Zigong 643000, Peoples R ChinaSichuan Univ Sci & Engn, Dept Mat & Chem Engn, Zigong 643000, Peoples R China