欢迎登录材料期刊网

材料期刊网

高级检索

研究了1 173 K高温改性处理对沥青基活性炭纤维吸附性能、孔径分布、微孔结构和表面化学的影响.低温(77 K)N2吸附结果表明热处理后活性炭纤维比表面积略有下降,通过密度函数理论解析活性炭纤维全孔范围的孔分布得出活性炭纤维表面孔径大于1.0 nm的微孔明显减少,微孔孔径更加集中于0.5 nm~1.0 nm,从而提高了活性炭纤维的碘吸附值.X射线衍射分析表明活性炭纤维是乱层石墨结构,热处理使活性炭纤维类石墨微晶碳层面的层间距下降,X光电子能谱分析表明热处理后活性炭纤维表面的含氧官能团C=O和COOH的含量变化不大,而呈碱性酚羟基C-OH含量的明显下降使活性炭纤维表面碱性降低.

参考文献

[1] Muniz J. .Low temperature selective catalytic reduction of NO over modified activated carbon fibres[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2000(1):27-36.
[2] Wan Y Z;Wang Y L;Cheng G X .Preparation and characterization of activated carbon fibers supporting silver loaded mesopprous molecular sieves[J].Carbon,2001,39:1065-1616.
[3] Alcanizmonge J.;Cazorlaamoros D.;Linaressolano A.;Delacasalillo MA. .METHANE STORAGE IN ACTIVATED CARBON FIBRES[J].Carbon: An International Journal Sponsored by the American Carbon Society,1997(2):291-297.
[4] Osmond N M .Activated carbon fiber adsorbent materials[J].Adsorption Science and Technology,2000,18(06):529-539.
[5] 梅华,胡成刚,刘晓勤,姚虎卿.活性炭表面氧化改性对负载铜(Ⅰ)吸附剂及其乙烯吸附性能的影响[J].新型炭材料,2002(04):33-37.
[6] 张丽丹,赵晓鹏,马群,王琪,郭坤敏.改性活性炭对苯废气吸附性能的研究[J].新型炭材料,2002(02):41-44.
[7] 马青兰,王增长,李敏敏,许并社.活性炭净化废水处理研究[J].新型炭材料,2002(01):59-61.
[8] Dela M A;Alcaniz J;Raymundo E .Molecular sieve properties general purpose carbon fibres[J].CARBON,1998,36(09):1353-1360.
[9] Oka H;Kawano S .The modification of in activated carbon fibres by chemical vapour deposition and its effects on molecular sieve selectivity[J].CARBON,1998,36(04):377-382.
[10] Mangun C L;Benak K R;Economy J et al.Surface chemistry,pore size and adsorption properties of activated carbon fibres and precurors treated with ammonia[J].Carbon,2001,39:1809-1820.
[11] Chung Tsair-Wang;Chung Chin-Chun .Increase in the amount of adsorption on modified activated carbon by using neutron flux irradiation[J].Chemical Engineering Science,1999(12):1803-1809.
[12] 荣海琴,郑经堂.改性PAN-ACFs对甲醛吸附性能的初步研究[J].新型炭材料,2001(01):44-48.
[13] 杨全红;郑经堂;王茂章 等.二次炭化对PAN-ACF结构和性能的影响[J].离子交换与吸附,1999,15(05):385-390.
[14] Blanco Lopez M C;Martinez-Alonso A;Tascon J M D .Microporous texture of activated carbon fibres prepared from Nomex aramid fibres[J].Microporous and Mesoporous Materials,2000,34:171-179.
上一张 下一张
上一张 下一张
计量
  • 下载量()
  • 访问量()
文章评分
  • 您的评分:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%