钴镍萃取过程中萃合物配位结构的研究进展

发布时间：2018-05-27 09:08

本文选题：钴镍萃取 + 配合物结构　；参考：《稀有金属》2017年07期

【摘要】：介绍了钴镍冶金的现状和发展方向,论述了钴镍萃取与分离工艺的特点和优势,指出了当前在钴镍萃取与分离方面存在的问题,说明了钴镍萃取反应过程中萃合物空间配位结构研究的必要性;总结了钴镍的物理化学性质、配位数和空间配位结构,讨论了不同配体对钴镍配合物的空间构型的影响,并运用配位场理论,分别从晶体场配位理论和价键理论两个方面分析了不同萃取体系下钴镍配合物的空间构型存在差异的原因;综述了单一萃取体系和协同萃取体系下钴镍的配位数和空间配位结构及其研究方法的国内外最新进展,并利用配位场理论解释了不同萃取体系下钴镍萃合物的差异;指出了当前在钴镍萃合物的配位结构研究方面存在的不足,展望了未来钴镍萃合物结构研究的潜在方法和发展方向,为钴镍萃取工艺实践提供了理论指导。
[Abstract]:The present situation and development trend of cobalt and nickel metallurgy are introduced. The characteristics and advantages of cobalt nickel extraction and separation process are discussed. The problems existing in the extraction and separation of cobalt and nickel are pointed out. The necessity of studying the spatial coordination structure of the complex during the extraction reaction of cobalt and nickel was explained, the physicochemical properties, coordination number and space coordination structure of cobalt and nickel were summarized, and the effects of different ligands on the spatial configuration of cobalt nickel complexes were discussed. Using the coordination field theory, the reasons for the difference of the space configuration of cobalt and nickel complexes in different extraction systems were analyzed from two aspects of crystal field coordination theory and valence bond theory, respectively. The recent progress in coordination number, spatial coordination structure and research methods of cobalt and nickel in single extraction system and synergistic extraction system were reviewed, and the differences of cobalt and nickel extractant in different extraction systems were explained by coordination field theory. This paper points out the shortcomings in the study of coordination structure of cobalt and nickel extraction compounds, and looks forward to the potential methods and development direction of the structure study of cobalt and nickel extraction complexes in the future, which provides theoretical guidance for the practice of cobalt and nickel extraction process.
【作者单位】：北京有色金属研究总院生物冶金国家工程实验室;
【基金】：国家国际科技合作专项项目(2014DFA90920)资助
【分类号】：O641.4;O658.2

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