期刊论文

Synthesis of novel calix[4]arene phosphate derivative and its extraction performance for uranium(VI)

Peng, G.-W.

中文

中国有色金属学报

1004-0609

2019

29

3

659-664

10.19476/j.ysxb.1004.0609.2019.03.24

51574152:国家自然科学基金 11705085:国家自然科学基金 2016M602418:中国博士后科学基金 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 2017CT5006:湖南省中央引导地方科技发展专项资金资助项目 :湖南省环境保护厅科研项目

本校为第一且通讯机构

以氯磷酸二苯酯作为取代基,通过取代反应对杯[4]芳烃下沿进行修饰,合成出一种新型杯[4]芳烃磷酸酯衍生物,并采用傅立叶红外光谱对其表征。考察 pH 值、萃取剂浓度、萃取时间、萃取温度对杯[4]芳烃磷酸酯衍生物萃取 U(Ⅵ)的影响。结果表明:在铀的初始浓度为 5 mg/ L 时,杯[4]芳烃磷酸酯衍生物萃取铀的最佳条件是pH 值为 4.0,温度为 25 ℃,萃取剂浓度为 0.20 g/L,萃取平衡时间为 2 h。杯[4]芳烃磷酸酯衍生物对铀的萃取过程符合准二级反应动力学模型。此外,在有多种共存离子的情况下,杯[4]芳烃磷酸酯衍生物表现出对 U(Ⅵ)良好的选择性萃取能力。

Diphenyl chlorophosphate was used as the substituent to react with the calix[4]arene to synthesize a novel calix[4]arene phosphate derivative. The calix[4]arene phosphate derivative was characterized by FT-IR. The effects of pH value, concentration of extractant, extraction time and temperature on the extraction of U(Ⅵ) by calix[4]arene phosphate derivatives were investigated. The results show that the optimum conditions for the extraction of uranium by calix[4]arene phosphate derivative are as follows. The pH value is 4.0, the temperature is ...