期刊
FUEL
卷 88, 期 1, 页码 19-26出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2008.08.004
关键词
Activated carbon fibers; Porosity; Chemical activation; Phosphoric acid; Oxidation resistance
资金
- Ministry of Science and Education of Spain [CTQ2006/11322, PPQ2003-07160]
Activated carbon fibers were prepared by chemical activation of hemp fibers with phosphoric acid at different carbonization temperatures and impregnation ratios. Surface properties of the activated carbons fibers were significantly influenced by the activation temperature and the impregnation ratio. An increase of either of these parameters produced a high development of the porous structure of the fibers. Activated carbon fibers with apparent surface area of 1350 m(2)/g and mesopore volume of 1.25 cm(3)/g were obtained at 550 degrees C with an impregnation ratio of 3. The activated carbon fibers presented a high oxidation resistance, due to the presence of phosphorus compounds on the carbon surface. The oxidation resistance results suggest that C-O-PO3 and mainly C-PO3 and C-P groups act as a physical barrier, blocking the active carbon sites for the oxidation reaction. (c) 2008 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据