高等学校化学学报

高等学校化学学报 ›› 1989, Vol. 10 ›› Issue (11): 1119.

• 研究论文 • 上一篇    下一篇

硅烷化活性炭的表面性质

赵振国1, 沈钟2, 陈丽特2, 邵长生2   

  1. 1. 北京大学物理化学研究所;
    2. 江苏化工学院化工系
  • 收稿日期:1988-04-20 出版日期:1989-11-24 发布日期:1989-11-24
  • 通讯作者: 赵振国
  • 基金资助:

    国家自然科学基金

The Surface Properties of the Silanized Active Carbon

Zhao Zhenguo1, Shen Zhong2, Chen Lite2, Shao Changsheng2   

  1. 1. Department of Chemistry, Peking University, Beijing;
    2. Department of Chemical Engineering, Jiangsu Institute of Technology, Changzhou
  • Received:1988-04-20 Online:1989-11-24 Published:1989-11-24

PDF (PC)

被引次数

20

摘要： 测定了活性炭经三甲基氯硅烷蒸气处理后比表面、比孔容、平均孔径等的变化;研究了硅烷化炭表面的润湿性质和吸附性质.结果表明,随活性炭与三甲基氯硅烷反应时间的延长,其比表面和比孔容急剧减小,而孔径分布和平均孔径无明显变化;硅烷化后炭表面的疏水性明显增强;硅烷化炭自水中对正丁醇的吸附量增大.

关键词: 活性炭, 表面改性, 润湿, 吸附

Abstract: The specific surface area, specific pore volume and the average pore radius of the silanized active carbon were determined.The wetting and adsorption properties of the same active carbon were studied.The results indicate.(1) with the lapse of the time of the reaction between the active carbon and ClSi(CH3)3 vapor, the specific surface area and specific pore volume decrease greatly, but the average pore radius and pore size distribution are nearly unchanged; (2) the hydrophobicity of the silanized active carbon is stronger than that of the original carbon; (3) the adsorption of butanol from water onto the active carbon increases with the silanization.The above-mentioned results can be explained by the surface reaction between the surface oxygenated groups of the active carbon and the ClSi(CH3)3 vapor.

Key words: Active carbon, Surface modification, Wetting, Adsorption

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