| 间苯二酚改性单宁基酚醛树脂对咖啡因的吸附 |
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| 引用本文： | 邹婷,周倩,袁花,张黔安,苏万里,彭志远.间苯二酚改性单宁基酚醛树脂对咖啡因的吸附[J].吉首大学学报(自然科学版),2017,38(3):64-68. |
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| 作者姓名： | 邹婷 周倩 袁花 张黔安 苏万里 彭志远 |
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| 作者单位： | （吉首大学化学化工学院，湖南 吉首 416000） |
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| 基金项目： | 国家自然科学基金资助项目(31360161） |
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| 摘 要： | 以马占相思单宁为原料，间苯二酚为改性试剂，制备间苯二酚改性的单宁基酚醛树脂，考察改性单宁基酚醛树脂对咖啡因的吸附特性.单宁基酚醛树脂经过间苯二酚改性，能有效改善其对咖啡因的吸附性能.改性单宁基酚醛树脂对咖啡因的吸附量随着温度的升高而下降，吸附过程为放热反应.改性单宁基酚醛树脂对咖啡因的等温吸附过程符合Freundlich等温吸附方程，吸附动力学过程符合准二级吸附动力学模型.
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| 关 键 词： | 间苯二酚 单宁 酚醛树脂 咖啡因 吸附 |
Adsorption of Tannin-Based Phenolic Resin Modified by Resorcinol for Caffeine |
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| ZOU Ting,ZHOU Qian,YUAN Hua,ZHANG Qianan,SU Wanli,PENG Zhiyuan.Adsorption of Tannin-Based Phenolic Resin Modified by Resorcinol for Caffeine[J].Journal of Jishou University(Natural Science Edition),2017,38(3):64-68. |
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| Authors: | ZOU Ting ZHOU Qian YUAN Hua ZHANG Qianan SU Wanli PENG Zhiyuan |
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| Institution: | (College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,Hunan China) |
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| Abstract: | Tannin-based phenolic resin modified by resorcinol was prepared from Acacia mangium tannin.The adsorption property of resin for caffeine was investigated.The results showed that the adsorption performance of tannin-based phenolic resin was improved by the modification with resorcinol.The adsorption capacity decreased with the increase of the temperature,and the adsorption process was exothermic.The isothermal adsorption of phenolic resin for caffeine was in agreement with the Freundlich isotherm equation.Pseudo-second-order kinetic model can be used to interpret the adsorption kinetics. |
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| Keywords: | resorcinol tannin phenolic resin caffeine adsorption |
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