期刊论文

Preparation of functionalized calix [4] arene symmetrical sulfide derivative and its adsorption behavior uranium(Ⅵ)

Peng, G.-W.

中文

中国有色金属学报

1004-0609

2019

29

2

422-428

10.19476/j.ysxb.1004.0609.2019.02.25

51574152:国家自然科学基金 11205084:国家自然科学基金 2017JJ2232:湖南省自然科学基金 2017JJ3262:湖南省自然科学基金 2017JJ4009:湖南省自然科学基金

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以1,3-二溴丙烷对对叔丁基杯[4]芳烃的下沿进行修饰,再利用 Na_2S·9H_2O合成制备一种新型的吸附材料杯[4]芳烃对称硫醚衍生物,并研究其吸附铀的主要影响因素,即U(Ⅵ)溶液pH值、吸附剂投入量、铀初始浓度及反应时间,分析其吸附过程的反应动力学和等温吸附规律。结果表明:当温度为25 ℃时,杯[4]芳烃对称硫醚衍生物吸附铀的最佳条件是pH值为4.0,铀初始浓度为20 mg/L,杯[4]芳烃对称硫醚衍生物加入量为20 mg以及吸附平衡时间为6 h。杯[4]芳烃对称硫醚衍生物对铀的吸附动力学符合准二级动力学模型,吸附过程为化学吸附,相关系数为0.9998;Langmuir、D-R和 Freundlich等温线均可较好地拟合吸附过程,说明...

By modifying the lower edge of tert butyl calix [4] arene with 1, 3-dibromopropane, and then utilizing Na2S•9H2O to prepare a new type of absorption material, that is calix [4] arene symmetric sulfide derivatives. The main influence factors of the uranium adsorption, such as pH value of U(Ⅵ) solution, input of adsorbent, initial concentration of uranium and reaction time, were explored, finally the reaction kinetics and adsorption isothermal law of adsorption process were analyzed. The results show that, the best condition of uranium adsorpti...