文献类型：期刊文献

英文题名：Characterization of carbon nanofiber composites synthesized by shaping process

作者：Li, Ping[1]; Zhao, Tie-Jun[1]; Zhou, Jing-Hong[1]; Sui, Zhi-Jun[1]; Dai, Ying-Chun[1]; Yuan, Wei-Kang[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem React Engn, UNILAB, Shanghai 200237, Peoples R China

年份：2005

卷号：43

期号：13

起止页码：2701

外文期刊名：CARBON

收录：;EI(收录号：2005339296555);WOS:【SCI-EXPANDED(收录号:WOS:000232535200008)】；

语种：英文

外文关键词：catalytically grown carbon; carbon composites; carbonization; chemical structure; texture

摘要：Catalytically grown carbon nanofibers (CNFs) are shaped into pellets in desired size and configuration by a conventional molding process so as to extend the potential applications of CNFs in industrial heterogeneous catalysis. After shaping, a novel carbon nanofiber composite with sufficient mechanical strength is produced, in which isolated CNFs are connected by a carbon network formed through polymer binder carbonization. Characterization of the synthesized CNF composite is performed by using HRTEM, XRD, Raman, N-2 physisorption, TPD and TGA. A comparison of the textural and structural properties, as well as the surface chemistry is made amongst the CNFs, the CNF composite, and a commercial coal-based activated carbon, in order to attain a comprehensive understanding of the CNF composite. The results show that the CNF composite preserves the mesoporous texture of the CNFs which will be beneficial to those reactions of mass transfer control. The modification effect of oxidative treatments on physicochemical properties of the CNF composite is also investigated. More surface oxygen-containing groups are introduced to the composite by treating the material either in boiling HNO3 solution or in static air at 400 degrees C. (C) 2005 Elsevier Ltd. All rights reserved.