高等学校化学学报 ›› 2015, Vol. 36 ›› Issue (6): 1126.doi: 10.7503/cjcu20150130

• 物理化学 • 上一篇    下一篇

纤维素制备渗氮炭材料用于脱除烟气中的SO2

程尚增1,2, 郭倩倩1,2, 黄张根1(), 申文忠1, 韩小金1   

  1. 1. 中国科学院山西煤炭化学研究所, 煤转化国家重点实验室, 太原 030001
    2. 中国科学院大学, 北京 100049
  • 收稿日期:2015-02-05 出版日期:2015-06-10 发布日期:2015-04-28
  • 作者简介:联系人简介: 黄张根, 男, 博士, 研究员, 主要从事燃煤烟气净化方面的研究. E-mail:zghuang@sxicc.ac.cn
  • 基金资助:
    国家自然科学基金(批准号: 21177136, 21106174)和中国科学院战略性先导科技专项基金(批准号: XDA07030300)资助

Cellulose Generated Carbon Materials with Nitrogen Doping for the Desulfurization of Flue Gas

CHENG Shangzeng1,2, GUO Qianqian1,2, HUANG Zhanggen1,*(), SHEN Wenzhong1, HAN Xiaojin1   

  1. 1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry,Chinese Academy of Sciences, Taiyuan 030001, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2015-02-05 Online:2015-06-10 Published:2015-04-28
  • Contact: HUANG Zhanggen E-mail:zghuang@sxicc.ac.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21177136, 21106174) and the Strategic Priority Research Program of the Chinese Academy of Sciences(No;XDA07030300)

摘要:

以纤维素为原料制备了孔结构发达和含氮量较高的渗氮炭材料, 并将其应用于烟气脱硫. 通过改变制备温度和尿素添加量等, 研究了影响脱硫性能的主要含氮官能团. 结果表明, 含氮基团可以有效提高炭材料的脱硫性能. 采用氮气吸附、 元素分析和X射线光电子能谱等表征方法分析了炭材料的孔结构、 含氮量和表面含氮基团的分布. 结果表明, 吡啶氮在炭材料脱硫过程中起主要作用, 吡啶氮既可以促进SO2的吸附, 又能促进SO2向SO3的催化氧化.

关键词: 炭材料, 脱硫, 含氮官能团, 纤维素, 尿素

Abstract:

Nitrogen-doped carbon materials with well developed pore structure and high nitrogen content were prepared from cellulose and characterized by N2 adsorption, element analysis and X-ray photoelectron spectroscopy, then applied to SO2 removal. The role of nitrogen-containing groups in the desulfurization was studied by changing the calcination temperature and amount of urea. It is found that the nitrogen-containing groups, especially pyridine nitrogen, could effectively improve the activity of carbon materials towards SO2 removal. Such a result is closely related to the pyridine nitrogen enhancing SO2 adsorption and its oxidation to SO3.

Key words: Carbon material, Desulfurization, Nitrogen-containing group, Cellulose, Urea

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