Study on Extraction Behavior of Re(VII) with Bis-triamide Extractants
Study on Extraction Behavior of Re(VII) with Bis-triamide Extractants
复制标题
双三酰胺萃取剂萃取Re(VII)行为的研究
DOI：
10.1080/07366299.2021.2016935
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发表时间：
2021-12
影响因子：
2
通讯作者：
Chuanqin Xia
中科院分区：
文献类型：
--
作者：
Xiaoyuan Zhou;Rulei Wu;Jinyang Kang;Yu Fan;Chao Huang;Yongdong Jin;Chuanqin Xia
合成了含有两个叔胺基团和六个酰胺基团的三种双三胺萃取剂L1、L2和L3，研究了在煤油-硝酸体系中，接触时间、硝酸浓度、盐和不同的酸对Re(VI)萃取行为的影响。结果表明，萃取动力学允许体系在2分钟内达到平衡。当硝酸浓度为1.0×10-2m ol/L，L浓度为1.0×10-2m o l/L时，L_1和L_2萃取Re(VI)的DRE分别为28.9和47.3。NaNO_3和NaClO_4浓度的增加会导致Dre的减小，且NaClO_4的抑制作用更明显。在HNO_3、HCl、H_2SO_4三种酸体系中，HNO_3对Re(Vi)的萃取抑制作用最为明显，因为在三种阴离子中，NO_3-−具有最大的标准吉布斯水化能(ΔGh°)。L3能从Re(VI)/U(VI)溶液中选择性地萃取Re(VI)，当L3和HNO3的浓度均为1.0×10-2mol/L时，L3的SF Re/U为1.06×103。斜率法和萃取量分析表明，萃合物由一个双三酰胺分子和一个ReO4-离子组成，热力学研究表明，萃取反应为吸热自发过程。
ABSTRACT In this paper, three bis-triamide extractants L1, L2 and L3 containing two tertiary amines groups and six amide groups were synthesized and the effects of contact time, HNO3 concentration, salts, different acids on the extraction behavior of Re(VII) were studied in the kerosene-HNO3 system. The results established that the extraction kinetics allow the system to reach equilibrium within 2 minutes. When HNO3 is 1.0 × 10–2 mol/L and the concentration of L is 1.0 × 10–2 mol/L, the DRe of L1 and L2 for the extraction of Re(VII) are 28.9, 47.3, respectively. The increase of NaNO3 and NaClO4 concentration will lead to the decrease of D Re, and the inhibition by NaClO4 is more significant. Among the three acid systems (HNO3, HCl, H2SO4), HNO3 had the most obvious inhibition on extraction of Re(VII) because NO3 − has the largest standard Gibbs hydration energy value (ΔGh°) among three anions. L3 could extract Re(VII) selectively from Re(VII)/U(VI) solution, the SF Re/U of L3 is 1.06 × 103 when the concentration of L3 and HNO3 are both 1.0 × 10–2 mol/L. According to slope method and extraction capacity analysis, the extraction compound is composed of one bis-triamide molecule and one ReO4 – ion, and thermodynamic studies showed that the extraction reaction is an endothermic and spontaneous process.
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影响因子：
1.6
作者：
Q. Chen;A. Aarkrog;H. Dahlgaard;Sven Poul Nielsen;Elis Holm;H. Dick;K. Mandrup
通讯作者：
Q. Chen;A. Aarkrog;H. Dahlgaard;Sven Poul Nielsen;Elis Holm;H. Dick;K. Mandrup
使用双三酰胺萃取剂对钍 (IV) 进行选择性萃取和络合研究：合成、溶剂萃取、EXAFS 和 DFT
影响因子：
4.6
作者：
Kang J.;Wu R.;Li L.;Hu H.;Fan Y.;Jin Y.;Huang C.;Chen J.;Xu C.;Xia C.
通讯作者：
Xia C.
新型萃取剂双三酰胺：从硝酸介质中合成和选择性萃取钍 (IV)
影响因子：
8.6
作者：
Li Long;Pan Ning;Guo Xinghua;Ding Jie;Wu Rulei;Ding Songdong;Wang Ruibing;Jin Yongdong;Huang Chao;Xia Chuanqin
通讯作者：
Xia Chuanqin
影响因子：
1.6
作者：
T. Omori;Y. Muraoka;H. Suganuma
通讯作者：
T. Omori;Y. Muraoka;H. Suganuma
影响因子：
2
作者：
P. Moeyaert;T. Dumas;D. Guillaumont;P. Solari;C. Lefebvre;A. Thevenet;C. Sorel;P. Moisy
通讯作者：
P. Moeyaert;T. Dumas;D. Guillaumont;P. Solari;C. Lefebvre;A. Thevenet;C. Sorel;P. Moisy