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Synthesis of N-(2-ethylhexyl)-pyridine-4-carboxamide and its synergistic behaviors with dinonylnaphthalene sulfonic acid for the selective extraction of nickel and cobalt

文献类型：期刊论文

作者Liu, Wensen2; Su, Hui3,4; Zhang, Jian3,4,5; Wang, Lina3,4; Liu, Yahui3,4; Liang, Jie2; Zhu, Zhaowu1,3,4
刊名SEPARATION AND PURIFICATION TECHNOLOGY
出版日期2022-04-01
卷号286页码:11
关键词Synergistic solvent extraction Nickel Cobalt Laterite
ISSN号1383-5866
DOI10.1016/j.seppur.2021.120385
英文摘要The hydrometallurgical process for the recovery of nickel and cobalt requires a complex and expensive impurity removal process. Solvent extraction is widely used in industry for the separation, purification, and concentration of metals. However, current commercial extractants encounter some difficulties when cobalt and nickel are extracted from solutions containing a large amount of impurities such as manganese and calcium. There is an urgent need to develop new reagents for the selective extraction of Ni and Co. In this study, N-(2-ethylhexyl)pyridine-4-carboxamide (NEHPCA) was synthesized, and the metal extraction capacity of its synergistic solvent extraction (SSX) system with dinonylnaphthalene sulfonic acid (DNNSA) and tributyl phosphate (TBP) modifier was examined. The experimental results show that the selectivity of the new SSX system has the order Cu > Ni > Co > Zn > Mn > Ca > Al asymptotic to Cr (III) asymptotic to Mg asymptotic to Fe (III), with excellent selectivity for nickel and cobalt. Using an organic phase composed of 0.7 M NEHPCA, 0.35 M DNNSA, and 0.2 M TBP under 1:1O/A operation, after three stage theoretical extraction, more than 99% of nickel and cobalt can be recovered from a synthetic leaching solution of nickel laterite ore. Mechanistic studies showed that NEHPCA and water molecules participate in the internal coordination of metals, and DNNSA provided coordination anions to achieve charge balance, forming the Ni complex in this SSX system which existed most likely in the form of [Ni(NEHPCA)(2)(H2O)(4)](DNNS)2 in the organic phase.
WOS关键词LATERITE LEACH SOLUTIONS ; SOLVENT-EXTRACTION ; PYRIDINECARBOXYLATE ESTERS ; SULFATE-SOLUTIONS ; METAL-IONS ; RECOVERY ; MIXTURES ; SEPARATION ; MAGNESIUM ; SYSTEM
资助项目National Natural Science Foundation of China[51774260] ; Beijing Municipal Natural Science Foundation[2202053] ; Key Program of Innovation Academy[IAGM-2019-A15] ; Chinese Academy of Sciences
WOS研究方向Engineering
语种英语
WOS记录号WOS:000808564400002
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; Beijing Municipal Natural Science Foundation ; Key Program of Innovation Academy ; Chinese Academy of Sciences
源URL[http://ir.ipe.ac.cn/handle/122111/53879]  
专题中国科学院过程工程研究所
通讯作者Liang, Jie; Zhu, Zhaowu
作者单位1.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China
2.China Univ Min & Technol Beijing, Sch Chem & Environm Engn, Beijing 100083, Peoples R China
3.Natl Engn Res Ctr Green Recycling Strateg Met Reso, Beijing 100190, Peoples R China
4.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
5.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 101408, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Wensen,Su, Hui,Zhang, Jian,et al. Synthesis of N-(2-ethylhexyl)-pyridine-4-carboxamide and its synergistic behaviors with dinonylnaphthalene sulfonic acid for the selective extraction of nickel and cobalt[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2022,286:11.
APA Liu, Wensen.,Su, Hui.,Zhang, Jian.,Wang, Lina.,Liu, Yahui.,...&Zhu, Zhaowu.(2022).Synthesis of N-(2-ethylhexyl)-pyridine-4-carboxamide and its synergistic behaviors with dinonylnaphthalene sulfonic acid for the selective extraction of nickel and cobalt.SEPARATION AND PURIFICATION TECHNOLOGY,286,11.
MLA Liu, Wensen,et al."Synthesis of N-(2-ethylhexyl)-pyridine-4-carboxamide and its synergistic behaviors with dinonylnaphthalene sulfonic acid for the selective extraction of nickel and cobalt".SEPARATION AND PURIFICATION TECHNOLOGY 286(2022):11.

入库方式： OAI收割

来源：过程工程研究所

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