Bo You, Jun Yang, Guo-ping Yong, Shao-min Liu, Wei Xie, Qing-de Su. Influence of Preparation Conditions on Structural Stability of Ordered Mesoporous Carbons Synthesized by Evaporation-induced Triconstituent Co-assembly Method[J]. Chinese Journal of Chemical Physics , 2011, 24(3): 365-372. doi: 10.1088/1674-0068/24/03/365-372
Citation: Bo You, Jun Yang, Guo-ping Yong, Shao-min Liu, Wei Xie, Qing-de Su. Influence of Preparation Conditions on Structural Stability of Ordered Mesoporous Carbons Synthesized by Evaporation-induced Triconstituent Co-assembly Method[J]. Chinese Journal of Chemical Physics , 2011, 24(3): 365-372. doi: 10.1088/1674-0068/24/03/365-372

Influence of Preparation Conditions on Structural Stability of Ordered Mesoporous Carbons Synthesized by Evaporation-induced Triconstituent Co-assembly Method

doi: 10.1088/1674-0068/24/03/365-372
Funds:  This work was supported by the National Natural Science Foundation of China (No.20872135).
  • Received Date: 2011-03-07
  • Various ordered mesoporous carbons (OMCs) have been prepared by evaporation-induced triconstituent co-assembly method. Their mesostructural stability under different carbon content, aging time and acidity were conveniently monitored by X-ray diffraction, transmis-sion electron microscopy, and N2 sorption isotherms techniques. The results show mesostruc-tural stability of OMCs is enhanced as the carbon content increases from 36% to 46%, further increasing carbon content deteriorates the mesostructural stability. Increasing aging time from 0.5 h to 5.0 h make the mesostructural stability go through an optimum (2.0 h) and gradually reduce framework shrinkage of the OMCs. Highly OMCs can only be obtained in the acidity range of 0.2~1.2 mol/L HCl, when the acidity is near the isoelectric point of silica, the resulting OMCs have the best mesostructure stability. Under the optimum condi-tion, the carbon content of 46%, aging time of 2.0 h, and 0.2 mol/L HCl, the resulting OMCs have the best mesostructure stability and the highest BET surface areas of 2281 m2/g.
  • 加载中
  • 加载中
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Article Metrics

Article views(1700) PDF downloads(1121) Cited by()

Proportional views
Related

Influence of Preparation Conditions on Structural Stability of Ordered Mesoporous Carbons Synthesized by Evaporation-induced Triconstituent Co-assembly Method

doi: 10.1088/1674-0068/24/03/365-372
Funds:  This work was supported by the National Natural Science Foundation of China (No.20872135).

Abstract: Various ordered mesoporous carbons (OMCs) have been prepared by evaporation-induced triconstituent co-assembly method. Their mesostructural stability under different carbon content, aging time and acidity were conveniently monitored by X-ray diffraction, transmis-sion electron microscopy, and N2 sorption isotherms techniques. The results show mesostruc-tural stability of OMCs is enhanced as the carbon content increases from 36% to 46%, further increasing carbon content deteriorates the mesostructural stability. Increasing aging time from 0.5 h to 5.0 h make the mesostructural stability go through an optimum (2.0 h) and gradually reduce framework shrinkage of the OMCs. Highly OMCs can only be obtained in the acidity range of 0.2~1.2 mol/L HCl, when the acidity is near the isoelectric point of silica, the resulting OMCs have the best mesostructure stability. Under the optimum condi-tion, the carbon content of 46%, aging time of 2.0 h, and 0.2 mol/L HCl, the resulting OMCs have the best mesostructure stability and the highest BET surface areas of 2281 m2/g.

Bo You, Jun Yang, Guo-ping Yong, Shao-min Liu, Wei Xie, Qing-de Su. Influence of Preparation Conditions on Structural Stability of Ordered Mesoporous Carbons Synthesized by Evaporation-induced Triconstituent Co-assembly Method[J]. Chinese Journal of Chemical Physics , 2011, 24(3): 365-372. doi: 10.1088/1674-0068/24/03/365-372
Citation: Bo You, Jun Yang, Guo-ping Yong, Shao-min Liu, Wei Xie, Qing-de Su. Influence of Preparation Conditions on Structural Stability of Ordered Mesoporous Carbons Synthesized by Evaporation-induced Triconstituent Co-assembly Method[J]. Chinese Journal of Chemical Physics , 2011, 24(3): 365-372. doi: 10.1088/1674-0068/24/03/365-372

Catalog

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return