对羟基苯甲酸修饰的后交联树脂的制备及吸附性能研究化学工程与工艺毕业.docx

TOC \o 1-5 \h \z 摘要 1 关键词 1 Abstract 1 Keywords 2 引言 3 \o Current Document 实验部分 3 \o Current Document 2.1仪器与试剂 3 \o Current Document 2.2树脂的制备 3 \o Current Document 2.3树脂结构表征和性能测定 4 \o Current Document 树脂的红外光谱 4 树脂孔结构的测定 4 \o Current Document 2.3.3树脂对茶碱的吸附热力学 4 \o Current Document 2.3.4树脂对茶碱的吸附动力学研究 4 \o Current Document 结果与讨论 4 3」 树月旨的制备 4 3.2树脂的红外光谱 5 \o Current Document 3.3树脂的孔结构 5 3.4树脂对茶碱的吸附热力学 7 3.4.1树脂对茶碱的吸附等温线 7 树脂对茶碱的吸附热力学 8 3.5树脂对茶碱的吸附动力学 9 结论 10 参考文献 11 致谢 12 对羟基苯甲酸修饰的后交联树脂的制备及吸附性能 研究 摘 要：用二氯乙烷为溶剂，用FeCh为催化剂，使氯球和对疑基苯甲酸在超声条件下 发生Friedel-Crafts反应，制得了对拜基苯甲酸修饰的后交联树脂，对比研究对軽基苯甲酸修 饰的后交联树脂、XAD-4树脂对茶碱的吸附性能。测定了对拜基苯甲酸修饰的后交联树脂、 XAD-4树脂的红外光谱和孔结构；测定了对拜基苯甲酸修饰的后交联树脂、XAD-4树脂对茶 碱在不同温度下的吸附等温线，利用热力学函数关系计算出了吸附焰、自由能和爛；测定了 对耗基苯甲酸修饰的后交联树脂、XAD-4树脂对茶碱的吸附动力学。实验表明：对拜基苯甲 酸修饰的后交联树脂对茶碱的吸附性能明显优于XAD-4树脂;对拜基苯甲酸修饰的后交联树 脂对茶碱的吸附等温线符合Langmuir方程；与XAD-4树脂比较，对瓮基苯甲酸修饰的后交 联树脂对茶碱的吸附焰、口市能、爛更负；对拜基苯甲酸修饰的后交联树脂对茶碱的吸附动 力学数据符合Lagergren二级吸附速率方程，颗粒内扩散是吸附速率的主要控制步骤，吸附 速率同时还受液膜扩散的影响。 关键词：对疑基苯甲酸；后交联树脂；XAD-4树脂；茶碱；吸附热力学；吸附动力学 Synthesis of the Hypercrosslinked Resin Modified byp-Hydroxy Benzoic Acid and Its Adsorption PerformancesPENG Huan (Department of Chemistry and Environmental Engineerings Hunan City University,Yiyang413000) Abstract： The hypercrosslinked resin modified with p-hydroxy benzoic acid was synthesized with chloromethylated polystyrene and p-hydroxy benzoic acid by Friedel-Crafts reaction under the condition of ultrasound. Dichloroethane was used as solvent and ferric chloride was used as catalyst. The objective of this work was to study the comparison of the adsorption performances for theophylline onto the hypercrosslinked resin and XAD-4 resin. The IR spectra, the pore structure of the hypercrosslinked resin and XAD-4 resin were measured. The adsorption isotherms of theophylline at different temperatures were studied. Isothermal adsorption enthalpy, Gibbs free energy and entropy were calculated according to thermodynamic equations. The adsorption kinetics of theophylline onto