华南理工大学学报(自然科学版) ›› 2009, Vol. 37 ›› Issue (3): 34-37.

• 材料科学与技术 • 上一篇    下一篇

微纤包覆活性炭复合材料的制备与结构特性

张会平 高连连 鄢瑛   

  1. 华南理工大学 化学与化工学院, 广东 广州 510640
  • 收稿日期:2007-10-25 修回日期:2008-09-25 出版日期:2009-03-25 发布日期:2009-03-25
  • 通信作者: 张会平(1964-),男,教授,主要从事吸附与催化、环境保护和精细化工的研究. E-mail:hpzhang@scut.edu.cn
  • 作者简介:张会平(1964-),男,教授,主要从事吸附与催化、环境保护和精细化工的研究.
  • 基金资助:

    国家自然科学基金资助项目(20876053)

Preparation and Structural Characteristics of Activated Carbon Composite Enwrapped by Microfibers

Zhang Hui-ping  Gao Lian-lian  Yan Ying   

  1. School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2007-10-25 Revised:2008-09-25 Online:2009-03-25 Published:2009-03-25
  • Contact: 张会平(1964-),男,教授,主要从事吸附与催化、环境保护和精细化工的研究. E-mail:hpzhang@scut.edu.cn
  • About author:张会平(1964-),男,教授,主要从事吸附与催化、环境保护和精细化工的研究.
  • Supported by:

    国家自然科学基金资助项目(20876053)

摘要: 采用湿法造纸工艺和烧结工艺,以竹纤维、陶瓷纤维和微米尺度活性炭颗粒为原材料制备了一种新型的微纤包覆活性炭复合材料.通过SEM分析复合材料的表观结构,结果表明陶瓷纤维之间的结合处被很好地烧结在一起,形成一个三维网状结构,活性炭颗粒被微纤网状结构很好地包覆起来.通过美国ASAP-2020吸附仪,测定了所用活性炭及所制备复合材料的氮气吸附等温线和孔径分布,结果表明所用活性炭材料的BET比表面积为690m2/g,所制备微纤复合材料的BET比表面积为428m2/g,所包覆活性炭的BET比表面积为638m2/g,可以恢复到原活性炭颗粒的92.5%.

关键词: 复合材料, 微纤维, 活性炭, 吸附, 结构特性

Abstract:

A new kind of activated carbon composite enwrapped by microfibers was prepared via the wet papermaking process and the sintering process, by using bamboo fibers, ceramic fibers and micron-sized activated carbon as the materials. The apparent structure of the composite was then analyzed by means of SEM, finding that the junctures of ceramic fibers are completely sintered together to form a three-dimension network, and that activated carbon is well enwrapped by the microfibrous network. Moreover, the nitrogen adsorption isotherms and pore size distributions of both the original activated carbon and the composite were measured using an ASAP-2020 adsorption apparatus. The results show that the BET specific surface areas of the original activated carbon and the composite are re- spectively 690 m2/g and 428 m2/g, and that the activated carbon enwrapped in the composite keeps a high BET specific surface area of 638 m2/g, which is 92.5% of the original.

Key words: composite, microfiber, activated carbon, adsorption, structural characteristic