Insight into lithium carbonate crystallization in the mild reaction system LiCl-NH3 center dot H2O-CO2 by stabilizing the solution with NH3 center dot H2O

doi:10.1016/j.jcrysgro.2019.05.020

	Insight into lithium carbonate crystallization in the mild reaction system LiCl-NH3 center dot H2O-CO2 by stabilizing the solution with NH3 center dot H2O
	Tian, Menghua 1,2; Wang, Zhi 1,2; Cao, Jianwei 1; Guo, Jianwei 1,2; Gong, Xuzhong 1,2
刊名	JOURNAL OF CRYSTAL GROWTH
	2019-08-15
卷号	520 页码:46-55
关键词	Absorption Diffusion Supersaturated solutions Growth from solutions Lithium compounds
ISSN号	0022-0248
DOI	10.1016/j.jcrysgro.2019.05.020
英文摘要	In this work, a novel method was utilized for the gas-liquid reactive crystallization of Li2CO3 in a LiCl-NH3 center dot H2O-CO2 system and the time-dependences of crystallization parameters were investigated carefully. The results indicated that [NH4+] had great influence on the Li2CO3 precipitation process, and that it could inhibit the recarbonation of the Li2CO3 crystals, thus simplifying the carbonation process. Increasing the concentration of NH3 center dot H2O can improve the CO2 absorption efficiency and stabilize the metastable solution with enlarged metastable zone width (MSZW), and the existence of NH3 center dot H2O made the absorption of CO2 more sensitive to temperature. The crystallization rate was improved by increasing the temperature, while the supersaturation (S) restricted the increase of the crystallization rate at temperatures below 60 degrees C. The kinetics was estimated to provide insight into the mechanism controlling the crystallization, and the apparent activation energy was found to be 23.55 kJ/mol, which indicated that the crystallization of Li2CO3 from the LiCl-NH3 center dot H2O-CO2 system was controlled by a combination of surface reaction and diffusion.
资助项目	National Key R&D Program of China[2018YFC1901801] ; National Science Foundation of China[51422405]
WOS关键词	CALCIUM-CARBONATE ; CO2 ABSORPTION ; MASS-TRANSFER ; PRECIPITATION ; LI2CO3 ; MAGNESIUM ; SIZE ; TRANSFORMATION ; EXTRACTION ; KINETICS
WOS研究方向	Crystallography ; Materials Science ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000470111100007
资助机构	National Key R&D Program of China ; National Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/29921]
专题	中国科学院过程工程研究所
通讯作者	Wang, Zhi
作者单位	1.Chinese Acad Sci, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Tian, Menghua,Wang, Zhi,Cao, Jianwei,et al. Insight into lithium carbonate crystallization in the mild reaction system LiCl-NH3 center dot H2O-CO2 by stabilizing the solution with NH3 center dot H2O[J]. JOURNAL OF CRYSTAL GROWTH,2019,520:46-55.
APA	Tian, Menghua,Wang, Zhi,Cao, Jianwei,Guo, Jianwei,&Gong, Xuzhong.(2019).Insight into lithium carbonate crystallization in the mild reaction system LiCl-NH3 center dot H2O-CO2 by stabilizing the solution with NH3 center dot H2O.JOURNAL OF CRYSTAL GROWTH,520,46-55.
MLA	Tian, Menghua,et al."Insight into lithium carbonate crystallization in the mild reaction system LiCl-NH3 center dot H2O-CO2 by stabilizing the solution with NH3 center dot H2O".JOURNAL OF CRYSTAL GROWTH 520(2019):46-55.