| 胡敏酸在高岭土上的吸附行为 |
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| 引用本文： | 李爱民,朱燕,代静玉.胡敏酸在高岭土上的吸附行为[J].岩石矿物学杂志,2005,24(2):145-150. |
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| 作者姓名： | 李爱民 朱燕 代静玉 |
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| 作者单位： | 南京农业大学,资源与环境科学学院,环境工程系,江苏,南京,210095 |
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| 基金项目： | 国家自然科学基金重点资助项目 (4 0 2 3 10 16) |
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| 摘 要： | 研究了胡敏酸在高岭土上的吸附行为 ,并运用X衍射、红外光谱和热重等分析方法 ,对复合前后的高岭土进行分析。结果表明 ,连续洗涤 6次后 ,可获得稳定的胡敏酸高岭土复合体 ;胡敏酸在高岭土上的吸附符合Fruendlich吸附模式 ,Kf 为 0 .85 7;高岭土胡敏酸复合体的红外光谱出现了明显的C—H振动吸收峰 ;吸附行为主要表现为化学吸附 ,发生在铝的表面羟基吸附位上
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| 关 键 词： | 高岭土 胡敏酸 吸附行为 X衍射 红外光谱 热重分析 |
| 文章编号： | 1000-6524(2005)02-0145-06 |
The adsorption behavior of humic acid on kaolin |
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| LI Ai-min,ZHU Yan and DAI Jing-yu.The adsorption behavior of humic acid on kaolin[J].Acta Petrologica Et Mineralogica,2005,24(2):145-150. |
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| Authors: | LI Ai-min ZHU Yan and DAI Jing-yu |
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| Abstract: | In this paper, the adsorption behavior of humic acid (HA) on kaolin was investigated and the characteristics of HA-kaolin complexes were studied by means of X-ray diffraction pattern,TGA and IR. According to the results obtained,when the HA-kaolin complexes are washed six times,the HA can be stably combined with the kaolin; the Fruendlich-type equation can describe the adsorption isotherm of HA on kaolin well,and the K_f of HA on kaolin is 0.857; there exist apparent absorption peaks of hydrocarbon in the IR; chemical adsorption plays a major role in the interaction between HA and kaolinite, and the adsorption behavior mainly takes place on the hydroxyl sites of aluminum. |
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| Keywords: | kaolin humic acid adsorption behavior XRD IR TGA |
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