期刊论文

Wang, Jing-Song

中文

中国环境科学

1000-6923

2015

35

3

770-776

21177053,11175081:国家自然科学基金 12K091:湖南省高等学校创新平台开放基金 NHCXTD07:南华大学科技创新团队项目

本校为第一且通讯机构

以对羟基苯甲酸为原料,通过化学修饰合成得到上沿羧基化的杯[6]芳烃羟肟衍生物,即5,11,17,23,29,35-六羧基-37,38,39,40,41,42-六羟肟酸甲氧基杯[6]芳烃(HHMHC),采用IR对其结构性能进行表征,并探讨了溶液初始pH值、初始重金属离子(Cu~(2+)、Ni~(2+))浓度、萃取时间、温度等因素对HHMHC萃取重金属离子的影响.结果表明,在温度为30℃时HHMHC萃取Ni~(2+)和Cu~(2+)的最佳pH值分别为5.0、6.0,萃取平衡时间均为30min.用准二级动力学模型(R~2>0.99)和Freundlich等温模型(R~2>0.999)均可较好的拟合其萃取过程,通过计算萃取过程的热力学参数,得到Gibbs自由能(ΔG~0)和焓变(ΔH~0)均小于0,表明萃取反应是一...

5, 11, 17, 23, 29, 35-hexacarboxy-37, 38, 39, 40, 41, 42-hexa-methoxy-hydroxamic calyx[6]arene (HHMHC) was synthesized by modifying p-hydroxybenzoic acid, and characterized by IR. The effects of pH, Cu2+and Ni2+initial concentration, extraction time and temperature on the calixarenes extraction behavior of Cu2+and Ni2+were investigated. The results showed that the maximum extraction were observed under the experiment conditions of 30 with a contact time of 30 min, a pH of 6.0(Cu2+), 5.0(Ni2+), when the initial concentration of Cu2+and Ni2+was 5 mg/L. The extration of Cu(II) and Ni(II) onto HHM...