Kinetics and the difference for extraction of praseodymium and neodymium from nitrate aqueous solution by [A336][NO3] using the single drop technique
文献类型：期刊论文
| 作者 | Wang, Xiaoqin2,3; Huang, Kun2,3; Cao, Wenjuan1,2; Sun, Pan1,2; Song, Weiyuan1,2; Liu, Huizhou1,2 |
| 刊名 | CHINESE JOURNAL OF CHEMICAL ENGINEERING
 |
| 出版日期 | 2020-05-01 |
| 卷号 | 28期号:5页码:1326-1333 |
| 关键词 | Praseodymium Neodymium [A336][NO3] Kinetics Single drop technique |
| ISSN号 | 1004-9541 |
| DOI | 10.1016/j.cjche.2020.02.010 |
| 英文摘要 | The kinetics and the difference for Pr(III) and Nd(III) extraction front nitrate aqueous solution using trialkylmethylammonium nitrate ([A336][NO3) as extractant were investigated by the single drop technique. The dependence of the extraction rate of Pr(III) and Nd(III) on the concentrations of free Pr(III) and Nd(III) ions, the concentrations of NaNO3 and H+ in aqueous solutions, and the concentrations of [A336][NO3] in kerosene solutions were discussed and the corresponding extraction rate equations for Pr(III) and Nd(III) were obtained. These equations demonstrated that the reaction rate constant of Pr(III) with [A336][NO3] was double than that of Nd(III). The effect of the addition of diethylenetriaminepentaacetic acid (DTPA) on the difference in the extraction rate of Pr(III) and Nd(III) by [A336][NO3] was also investigated. It was revealed that the difference in the complex formation rates of Pr(Iii) and Nd(III) with DTPA made a significant impact on the difference in the extraction rates of Pr(III) and Nd(III) with [A336][NO3], The ratio of extraction rates of Pr(lII) to Nd(III) with [A336][NO3] was in proportion to the ratio of complex formation rates of Pr(III) to Nd(III) with DTPA. The extraction rate difference for Pr(III) and Nd(III) with [A 336][NO3] increased due to a higher complex formation rate constant of DTPA with the free and un-complexed Nd(III) ions in the aqueous nitrate solution than that with Pr(III) ions. Therefore, the addition of DTPA in the aqueous nitrate solution is an effective method to intensify the separation of Pr(III) and Nd(III) in kinetics. The study on the extraction mechanism indicated that both the extraction of Pr(III) and Nd(III) by [A336][NO3] were diffusion controlled, and the reactions obeyed S(N)2 mechanism. The present work highlights a possible approach to strengthen the kinetic separation of Pr(III) and Nd(III). (C) 2020 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved. |
| WOS关键词 | BIFUNCTIONAL IONIC LIQUID ; SOLVENT-EXTRACTION ; CHLORIDE MEDIUM ; NONEQUILIBRIUM EXTRACTION ; SELECTIVE EXTRACTION ; ACID ; SEPARATION ; MECHANISM ; KEROSENE ; COMPLEX |
| 资助项目 | National Natural Science Foundation of China[51574213] ; National Natural Science Foundation of China[51074150] ; Key Project of Chinese National Programs for Fundamental Research and Development (973 Program)[2012CBA01203] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000555486000015 |
| 出版者 | CHEMICAL INDUSTRY PRESS CO LTD |
| 资助机构 | National Natural Science Foundation of China ; Key Project of Chinese National Programs for Fundamental Research and Development (973 Program) |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/41600]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Huang, Kun |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Univ Sci & Technol Beijing, Sch Met & Ecol Engn, 30 Xueyuan Rd, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xiaoqin,Huang, Kun,Cao, Wenjuan,et al. Kinetics and the difference for extraction of praseodymium and neodymium from nitrate aqueous solution by [A336][NO3] using the single drop technique[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2020,28(5):1326-1333. |
| APA | Wang, Xiaoqin,Huang, Kun,Cao, Wenjuan,Sun, Pan,Song, Weiyuan,&Liu, Huizhou.(2020).Kinetics and the difference for extraction of praseodymium and neodymium from nitrate aqueous solution by [A336][NO3] using the single drop technique.CHINESE JOURNAL OF CHEMICAL ENGINEERING,28(5),1326-1333. |
| MLA | Wang, Xiaoqin,et al."Kinetics and the difference for extraction of praseodymium and neodymium from nitrate aqueous solution by [A336][NO3] using the single drop technique".CHINESE JOURNAL OF CHEMICAL ENGINEERING 28.5(2020):1326-1333. |
入库方式： OAI收割
来源：过程工程研究所
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