| 淀粉接枝聚丙烯酸高吸水树脂吸附CuSO_4的行为和动力学 |
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| 引用本文： | 杨瑞成,申鹏,杨娟,夏渊,吴量.淀粉接枝聚丙烯酸高吸水树脂吸附CuSO_4的行为和动力学[J].陕西化工,2010(12):1823-1826,1829. |
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| 作者姓名： | 杨瑞成 申鹏 杨娟 夏渊 吴量 |
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| 作者单位： | 兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,甘肃兰州730050 |
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| 基金项目： | 甘肃省教育厅开放基金项目（SKL05011） |
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| 摘 要： | 以淀粉和丙烯酸为原料,用水溶液聚合法制备淀粉接枝聚丙烯酸高吸水树脂（St-g-PAA）,在20～40℃研究St-g-PAA对CuSO4的吸附行为。结果表明,St-g-PAA对CuSO4的室温吸附行为符合Freundlish关系,等温吸附表达式为：Γe=0.06c0.3（g/g）,其吸附过程具有一级反应特征,反应速率常数为：k=6.92×10-9×exp（35.418 4 kJ/RT）,吸附过程的表观活化能Ea=-35.418 4 kJ/mol,具有反应温度低、吸附速度快的特点。
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| 关 键 词： | 淀粉 聚丙烯酸高吸水树脂 吸附 动力学 CuSO4 |
CuSO_4-adsorption behavior of the starch grafted polyacrylic acid superabsorbent and its kinetics |
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| YANG Rui-cheng,SHEN Peng,YANG Juan,XIA Yuan,WU Liang.CuSO_4-adsorption behavior of the starch grafted polyacrylic acid superabsorbent and its kinetics[J].Applied Chemical Industry,2010(12):1823-1826,1829. |
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| Authors: | YANG Rui-cheng SHEN Peng YANG Juan XIA Yuan WU Liang |
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| Affiliation: | (State Key Laboratory of Gansu Advanced Non-ferrous Metal Meterials,Lanzhou University of Technology,Lanzhou 730050,China) |
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| Abstract: | With starch and acrylic acid as raw marerials,the starch grafted polyacrylic acid（St-g-PAA） superabsorbent was prepared by aqueous solution.The adsorption behavior of CuSO4 by the starch grafted polyacrylic acid was tested and studied at 20～40 ℃.The results showed that the adsorption behavior of CuSO4 by nanocomposite at room temperature was in accordance to Freundlish relationship with an equilibrium absorbing capacity of Γe=0.06c0.3（g/g）,at unit mass the adsorptional process followed after the one-order reaction.The reaction rate constant was k=6.92×10-9exp（35.41 kJ/RT） with the apparent energy Ea=-35.41 kJ/mol.The reaction temperature is low,the adsorption speed is fast. |
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| Keywords: | starch polyacrylic acid superabsorbent adsorption kinetics CuSO4 |
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