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Study on the thermodynamic properties of adsorption of ethyl benzoate and diethyl phthalate by phenolic resin adsorbents
查看参考文献13篇
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文摘
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This paper presents experimental observations on the adsorption of individual solutes by a simple thermodynamic framework, and the equilibrium adsorption of ethyl benzoate and diethyl phthalate on phenolic resin adsorbent in hexane solutions within the temperature range of 293-313 K. The experimental results show that the Freundlich adsorption law is applicable to the adsorption of ethyl benzoate and diethyl phthalate on the adsorbent, since all the correlative factors R' are larger than 0.99. The negative values of all the isosteric adsorption enthalpies for ethyl benzoate and diethyl phthalate indicate that they undergo exothermic processes, while their magnitudes (19-28 kJ/mol) manifest a hydrogen bonding sorption process. Other thermodynamic properties: the free energy changes and the entropy change associated with the adsorption have been calculated from the Gibbs adsorption equation and the Gibbs-Helmholtz equation. |
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来源
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Chinese Journal of Polymer Science
,2004,22(3):239-245 【核心库】
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关键词
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phenolic resin adsorbent
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adsorption
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ethyl benzoate
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diethyl plithalate
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地址
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1.
Shenyang College of Chemical Technology, Shenyang, 110021
2.
南开大学, 吸附分离功能高分子材料国家重点实验室, 天津, 300071
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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0256-7679 |
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学科
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化学 |
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基金
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国家自然科学基金
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国家自然科学基金
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文献收藏号
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CSCD:1846323
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