摘要
采用微化学反应法连续制备纳米碳酸锂,利用XRD、SEM和激光粒度仪对不同工艺条件制备的碳酸锂的粒径、产率和形貌进行了分析。结果表明,采用微反应法可连续制得平均粒径约为178nm的均匀类球形碳酸锂,产率可达90.01%;实验最佳工艺条件为:反应物浓度C碳酸钠=6mol/L,C氯化锂=3mol/L,C碳酸钠∶C氯化锂=2∶1,进料流量F=40mL/min,反应温度T=20℃。对比传统液相沉淀法与微反应法,微反应法制备碳酸锂的过程连续、产率高,得到的碳酸锂粒径更小、分布更均匀。
The nanosized lithium carbonate was continuously synthesized via microreaction method. The particle size,yield and morphology of lithium carbonate prepared by different process conditions were analyzed by XRD,SEM and laser particle size analyzer. The results show that the uniform spherical lithium carbonate with an average particle size of ca. 178 nm and yield of 90.01% can be continuously synthesized via the microreaction method. The optimum experimental conditions in microreactor are as follows:reactant concentration C Sodium carbonate=6 mol/L, C Lithium chloride=3 mol/L,C Sodium carbonate∶C Lithium chloride =2∶1,feed flow rate F=40 mL/min,reaction temperature T=20 ℃. Compared with the traditional liquid phase precipitation method,the process of synthesizing lithium carbonate via the microreaction method is continuous with higher yield,and the lithium carbonate has smaller particle size and more homogeneous.
作者
游立
王雪梅
曹建新
刘飞
YOU Li;WANG Xue-mei;CAO Jian-xin;LIU Fei(College of Chemistry and Chemical Engineering,Guizhou University,Guiyang 550025,China;Key Laboratory of Green Chemicals and Clean Energy Technology of Guizhou Province,Guiyang 550025,China;Industrial Waste Efficient Utilization Engineering Research Center of Guizhou provence,Guizhou University,Guiyang 550025,China)
出处
《人工晶体学报》
EI
CAS
北大核心
2019年第5期961-967,共7页
Journal of Synthetic Crystals
基金
贵州省绿色化工与清洁能源技术重点实验室建设项目(黔科合计Z字[2013]4006)
贵州省能源资源转化催化技术科技创新人才团队项目(黔科合支撑[2018]5607号)
贵州省研究生科研立项基金(KYJJ2017021)
关键词
纳米Li2CO3
微反应
连续合成
液相沉淀法
nanosized Li2CO3
microreaction
continuously synthesize
liquid phase precipitation
作者简介
游立(1992-),男,贵州省人,硕士研究生。E-mail:jy_liyou@126.com;通讯作者:曹建新,教授,E-mail:jxcao@gzu.edu.cn;通讯作者:刘飞,教授,E-mail:ce.feiliu@gzu.edu.cn。
