| 超高交联吸附树脂吸附对硝基苯乙酮的热力学研究 |
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| 引用本文： | 唐树和,王京平.超高交联吸附树脂吸附对硝基苯乙酮的热力学研究[J].离子交换与吸附,2004,20(5):452-457. |
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| 作者姓名： | 唐树和 王京平 |
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| 作者单位： | 盐城师范学院化学系,盐城,224002 |
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| 基金项目： | 江苏省教育厅自然科学研究基金资助项目。项目号:04KJB150153 |
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| 摘 要： | 比较两种超高交联聚苯乙烯吸附树脂NJ-8、AM-1与Amberlite XAD-4(以下简称XAD-4)对对硝基苯乙酮的静态吸附行为，根据吸附等温线研究了吸附热力学性质．在298～318K和研究的浓度范围内，NJ-8，AM-1、XAD-4对对硝基苯乙酮的吸附平衡数据符合Freundlich吸附等温方程．结果表明：吸附为放热过程，适当降低温度有利于吸附．计算了对硝基苯乙酮在NJ-8，AM-1、XAD-4树脂上的吸附焓变、自由能变，吸附熵变．对吸附行为作了合理的解释。
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| 关 键 词： | 超高交联吸附树脂 静态吸附 吸附热力学 对硝基苯乙酮 |
| 文章编号： | 1001-5493(2004)05-0452-06 |
| 修稿时间： | 2004年3月4日 |
THE ADSORPTION THERMODYNAMICS OF P-NITROACETOPHENONE ON NEW HYPERCROSSLINKED POLYMERIC RESINS |
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| TANG Shuhe,WANG Jingping.THE ADSORPTION THERMODYNAMICS OF P-NITROACETOPHENONE ON NEW HYPERCROSSLINKED POLYMERIC RESINS[J].Ion Exchange and Adsorption,2004,20(5):452-457. |
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| Authors: | TANG Shuhe WANG Jingping |
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| Institution: | TANG Shuhe WANG Jingping Department of Chemistry of Yancheng Teachers College,Yancheng 224002,China |
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| Abstract: | A comparison the adsorption properties of the hypercrosslinked polymeric resins NJ-8, AM-1 and Amberlite XAD-4 toward p-nitroacetophenone was made, including the static equilibrium adsorption isotherms and the adsorption thermodynamic properties. Equilibrium data for the adsorption of p-nitroacetophenone from aqueous solutions by NJ-8, AM-1 and Amberlite XAD-4 adsorbents within temperature range of 298-318K and investigative concentration range had been obtained and were correlated with Freundlich equation. Freundlich adsorption isotherms and isosteric enthalpy change of adsorption indicate that the process of adsorption of p-nitroacetophenone from aqueous solution by NJ-8, AM-1 and Amberlite XAD-4 is an exothermic process. Estimations of the isosteric enthalpy change of adsorption, free energy change, and entropy change of adsorption are reported, and the adsorption behaviors are reasonably interpreted. |
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| Keywords: | Hypercrosslinked polymeric resin Static adsorption behavior Adsorption thermodynamics p-nitroacetophenone |
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