Effect of impurity ions on the primary nucleation of ammonium alum precipitated from aqueous solution

doi:10.1016/j.powtec.2020.10.072

	Effect of impurity ions on the primary nucleation of ammonium alum precipitated from aqueous solution
	Qu, Min 1; You, Shaowei 2; Liu, Pengfei 2
刊名	POWDER TECHNOLOGY
	2021-02-01
卷号	379 页码:217-222
关键词	Primary nucleation Induction time Metastable zone width FBRM
ISSN号	0032-5910
DOI	10.1016/j.powtec.2020.10.072
英文摘要	Ammonium alum is an important powder material for producing high purity alumina. It is usually obtained by crystallization from aqueous solution, but impurity ions in solution have a great effect on the quality of final product particles. Effects of sodium, potassium and iron ions on the primary nucleation of ammonium alum were studied by measuring induction time and metastable zone width using focused beam reflectance measurement (FBRM). It was found that potassium ion or iron ion enhanced the nucleation, whereas sodium ion had no obvious effect. Analysis about the mechanism of impurity incorporation showed that, due to the isomorphous substitution, potassium ion or iron ion were easily incorporated into ammonium alum crystals. Moreover, potassium ion was more easily incorporated into crystal than iron ion. (C) 2020 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[21908230] ; Major Scientific and Technological Innovation Project of Shandong Province, China[2019JZZY010405] ; Henan Transfer Project of CAS Scientific and Technological Achievements[2019103] ; Tianjin Science and Technology Program[18YFYSZC00170]
WOS关键词	METASTABLE ZONE WIDTH ; CALCIUM-SULFATE ; CRYSTALLIZATION KINETICS ; SIZE DISTRIBUTION ; POTASSIUM ALUMS ; INDUCTION TIME ; SODIUM ; COCRYSTALLIZATION ; HEMIHYDRATE ; MECHANISM
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000608250100007
资助机构	National Natural Science Foundation of China ; Major Scientific and Technological Innovation Project of Shandong Province, China ; Henan Transfer Project of CAS Scientific and Technological Achievements ; Tianjin Science and Technology Program
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/43315]
专题	中国科学院过程工程研究所
通讯作者	You, Shaowei
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Qu, Min,You, Shaowei,Liu, Pengfei. Effect of impurity ions on the primary nucleation of ammonium alum precipitated from aqueous solution[J]. POWDER TECHNOLOGY,2021,379:217-222.
APA	Qu, Min,You, Shaowei,&Liu, Pengfei.(2021).Effect of impurity ions on the primary nucleation of ammonium alum precipitated from aqueous solution.POWDER TECHNOLOGY,379,217-222.
MLA	Qu, Min,et al."Effect of impurity ions on the primary nucleation of ammonium alum precipitated from aqueous solution".POWDER TECHNOLOGY 379(2021):217-222.