Preparation and characterization of petroleum‐pitch‐based carbon aerogels |
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| Authors: | Xianhua Zeng Dingcai Wu Ruowen Fu |
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| Affiliation: | 1. Materials Science Institute, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry and Chemical Engineering, Sun Yat‐Sen University, Guangzhou 510275, People's Republic of China;2. Institute of Optoelectronic and Functional Composite Materials, Sun Yat‐Sen University, Guangzhou 510275, People's Republic of China |
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| Abstract: | Carbon aerogels were prepared by the sol–gel polymerization of petroleum pitches followed by ambient‐pressure drying and then carbonization. Furfural and sulfuric acid were found to be the best crosslinking agent and best catalyst for the reaction system, respectively. It was necessary to add acetic acid as a cosolvent, and the volume ratio of toluene to acetic acid played an important role in the mass densities of the samples. The average diameters of the nanonetwork particles of the typical carbon aerogels thus obtained were about 30–40 nm, and their surface areas were over 360 m2/g. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009 |
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| Keywords: | crosslinking density microstructure |
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