摘要
Lithium carbonate (Li_(2)CO_(3)) was synthesised by adding sodium (Na) and magnesium (Mg) ions into a lithium chloride solution at different concentrations,followed by the addition of an appropriate sodium carbonate solution.Then,the morphology,purity and particle size of Li_(2)CO_(3) crystals were investigated.The Na and Mg ions had negligible and remarkable effects,respectively,on the product purity;however they both greatly influenced its morphology.Their effects on the nucleation and growth rates,the radial distribution function and the diffusion behaviour of the synthesised Li_(2)CO_(3) were investigated via molecular dynamics methods;the Na ions slowed down the crystal nucleation and growth rates,while the Mg ions accelerated them.Moreover,the Mg ions rendered the system short-range ordered and long-range disordered and also increased the diffusion coefficient.The results of this study showed that Mg ions are one of the most important factors influencing the purity and yield of Li_(2)CO_(3).
作者
MA Yanfang
XIANG Shaoji
CUI Zhenhua
LI Kanshe
ZHANG Zhihong
马艳芳;XIANG Shaoji;CUI Zhenhua;李侃社;ZHANG Zhihong(Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining 810008,China;Qinghai Province Key Laboratory of Resources and Chemistry of Salt Lakes,Xining 810008,China;Chemistry and Chemical Engineering College of Xi'an University of Science and Technology,Xi'an 710054,China;Innovation Academy for Green Manufacture,Chinese Academy of Sciences,Beijing 100190,China;Key Laboratory of Organofluorine Chemistry,Shanghai Institute of Organic Chemistry,University of Chinese Academy of Sciences,Chinese Academy of Sciences,Shanghai 200032,China)
基金
Funded by the 2017 CAS“Light of West China”Program,Innovation Academy for Green Manufacture,CAS(No.IAGM2020C01)
Key R&D and Transformation Projects in Qinghai Province(No.2019-GX-167)。
作者简介
MA Yanfang(马艳芳),Assoc.Researcher,E-mail:mayanfang@sl.ac.cn;Corresponding author:LI Kanshe(李侃社),Assoc.Prof.,Ph D,E-mail:likanshe@xust.edu.cn。
