Title :
Study on Pan-Based Activated Carbon Fiber Prepared by Different Activation Methods
Author :
Li, Quanming ; Zhang, Wanxi
Author_Institution :
Dept. of Mater. Sci. & Eng., Jilin Univ., Changchun
Abstract :
Activated carbon fibers (ACF) were prepared from polyacrylonitrile (PAN) precursor fibers by two methods: KOH activation at 400 -1000 degC and H3PO4 activation at 600-1400 V. H3PO4 activation yielded relatively poorly developed porosity regardless of the activation temperature, maintaining a low surface area (around 1000 m2g´) at very high burn-off while KOH activation provided high porosities above 650degC. The microstructures of samples were studied by means of nitrogen adsorption. The nitrogen isotherms were analyzed in detail using the routine BET method, characterize the pore size distribution by DFT (theory of density function).
Keywords :
adsorption; carbon fibres; materials preparation; porosity; porous materials; C; H3PO4 activation; KOH activation; PAN-based activated carbon fiber; nitrogen adsorption; polyacrylonitrile precursor fibers; pore size distribution; temperature 400 degC to 1400 degC; theory of density function; Cities and towns; Density functional theory; Inductors; Materials science and technology; Microstructure; Nitrogen; Optical fiber testing; Slurries; Temperature; Valves;
Conference_Titel :
Power and Energy Engineering Conference, 2009. APPEEC 2009. Asia-Pacific
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-2486-3
Electronic_ISBN :
978-1-4244-2487-0
DOI :
10.1109/APPEEC.2009.4918829
