无机金属锂离子筛材料制备方法研究进展

Research progress on preparation methods of inorganic metal lithium ion sieve materials

无机金属锂离子筛材料制备方法较多,也是最有潜力进行工业化制备生产并实际应用的吸附提锂材料。由于不同制备方法具有各自的技术特点与局限性,所制备出的离子筛材料在形态、选择性、吸附容量及结构稳定性等方面也各有不同,总结归纳出这些制备方法的技术优势与不足及离子筛材料的特点,对设计制备综合性能优异的离子筛材料具有重要的意义。本文综述了固相反应法、溶胶-凝胶法、共沉淀法、水热法等几种常见方法制备无机金属锂离子筛的研究工作进展,主要探讨了这些制备方法所制备的无机金属锂离子筛的微结构、性状、结晶度、吸附容量等综合性能,并重点论述了对应制备方法的技术优势与不足,还分析了不同制备方法制备吸附性能优异无机金属锂离子筛材料的技术瓶颈,并结合技术方法特点提出了针对不同方法制备吸附性能优异离子筛材料可采取的一些方法措施,以期推动无机金属锂离子筛材料规模化生产制备并实际应用。

There are many preparation methods for inorganic metal lithium ion sieve materials,and it is also a type of Li-adsorption material with the most potential for industrial production and practical application.Due to the different preparation methods have their own technical characteristics and limitations,the so-prepared ion sieve materials are different in the morphology,selectivity,adsorption capacity and structural stability.It has important significance to sum up the technical advantages and shortcomings of these preparation methods as well as the characteristics of so-prepared materials for the design and preparation of ion sieve materials with excellent comprehensive performance.In this paper,the preparation research progress of inorganic metal lithium ion sieve by solid phase reaction,sol-gel,co-precipitation,hydrothermal and other common methods were reviewed.The microstructure,properties,crystallinity and adsorption capacity of the inorganic metal ion sieve materials prepared by these preparation methods were mainly discussed as well as the technical advantages and disadvantages of the corresponding preparation method.The technical bottleneck of different preparation methods to prepare inorganic metal lithium ion sieve materials with excellent adsorption performance were also analyzed.Finally,some strategies for preparing ion sieve materials with excellent adsorption performance by different preparation methods were put forward in order to promote the large-scale production and practical application of inorganic metal lithium ion sieve materials.