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Investigations on Mg-borate kinetics and mechanisms during evaporation, dilution and crystallization by Raman spectroscopy
Peng, Jiaoyu1,2; Chen, Jing1,2,4; Dong, Yaping1,2; Li, Wu1,3
2018-06-15
发表期刊SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷号199页码:367-375
文章类型Article
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.
关键词Raman Spectrum Boron-concentrated Brine Evaporation Dilution Borates Transformation Mechanism
WOS标题词Science & Technology ; Technology
关键词[WOS]SALT LAKE BRINE ; AQUEOUS-SOLUTION ; POLYBORATE EQUILIBRIA ; BORIC-ACID ; FT-IR ; POLYANIONS ; CHEMISTRY ; IONS
收录类别SCI
语种英语
WOS研究方向Spectroscopy
WOS类目Spectroscopy
WOS记录号WOS:000432767100046
出版者PERGAMON-ELSEVIER SCIENCE LTD
引用统计
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/6719
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
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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.
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