Investigations on Mg-borate kinetics and mechanisms during evaporation, dilution and crystallization by Raman spectroscopy

	Investigations on Mg-borate kinetics and mechanisms during evaporation, dilution and crystallization by Raman spectroscopy
	Peng, Jiaoyu 1,2; Chen, Jing 1,2,4; Dong, Yaping 1,2; Li, Wu 1,3
刊名	SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
	2018-06-15
卷号	199 页码:367-375
关键词	Raman Spectrum Boron-concentrated Brine Evaporation Dilution Borates Transformation Mechanism
文献子类	Article
英文摘要	Raman spectra of boron-concentrated, diluted, and corresponding mother solutions of brine were recorded at 298.15 K. The main polyborate anions present and their interactions in brine during evaporation and dilution were proposed according to the Raman spectra. The polyborate anions B(OH)(3), B3O3(OH)(-)(4),B5O6(OH)(-)(4), and B6O7(OH)(2)(-)(6) were found to be the main forms in boron-concentrated brine with B303(OH)4 ion being the principal form. Diluting brines with water accelerated depolymerization of B5O6(OH)(-)(4) and B6O7(OH)(2-)(6) anions into B (OH)(3) and B3O3(OH)(-)(4) ions and generated OH- ions, causing the pH of the solutions to increase from 42 to almost 8.0. Mg-borates precipitated from all diluted solutions could be classified as either hexaborates or triborates. A mechanism of solid phase transformation was also proposed and discussed based on Raman spectra analysis and solid species and solution pH data. (C) 2018 Elsevier B.V. All rights reserved.
WOS关键词	SALT LAKE BRINE ; AQUEOUS-SOLUTION ; POLYBORATE EQUILIBRIA ; BORIC-ACID ; FT-IR ; POLYANIONS ; CHEMISTRY ; IONS
WOS研究方向	Spectroscopy
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000432767100046
内容类型	期刊论文
源URL	[http://ir.isl.ac.cn/handle/363002/6718]
专题	中国科学院青海盐湖研究所
通讯作者	Dong, Yaping
作者单位	1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Qinghai, Peoples R China 2.Qinghai Engn & Technol Res Ctr Comprehens Utiliza, Xining 810008, Qinghai, Peoples R China 3.Key Lab Salt Lake Resources Chem Qinghai Prov, Xining 810008, Qinghai, Peoples R China 4.Univ Chinese Acad Sci, Beijing 10049, Peoples R China
推荐引用方式 GB/T 7714	Peng, Jiaoyu,Chen, Jing,Dong, Yaping,et al. Investigations on Mg-borate kinetics and mechanisms during evaporation, dilution and crystallization by Raman spectroscopy[J]. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,2018,199:367-375.
APA	Peng, Jiaoyu,Chen, Jing,Dong, Yaping,&Li, Wu.(2018).Investigations on Mg-borate kinetics and mechanisms during evaporation, dilution and crystallization by Raman spectroscopy.SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,199,367-375.
MLA	Peng, Jiaoyu,et al."Investigations on Mg-borate kinetics and mechanisms during evaporation, dilution and crystallization by Raman spectroscopy".SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 199(2018):367-375.