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Synthesis and formation mechanism of pinnoite in sulfated-type boron concentrated brine by dilution method
Peng, Jiaoyu1,2; Bian, Shaoju1,3; Lin, Feng1,2; Wang, Liping1,2; Dong, Yaping1,2; Li, Wu1,3
2017
Source PublicationPHASE TRANSITIONS
Volume90Issue:10Pages:1025-1033
SubtypeReview
AbstractThe synthesis of pinnoite (MgB2O(OH)(6)) in boron-containing brine was established with a novel dilution method. Effects of temperature, precipitation time, boron concentration and mass dilution ratio on the formation of pinnoite were investigated. The products obtained were characterized by X-ray diffraction (XRD), Raman, thermogravimetric and differential scanning calorimeter (TG-DSC), and scanning electron microscopy. The transformation mechanism of pinnoite with different dilution ratios was assumed by studying the crystal growth of pinnoite. The results showed that pinnoite was synthesized above 60 degrees C in the diluted brine. There were two reaction steps - precipitation of amorphous solid and the formation of pinnoite crystals - during the whole reaction process of pinnoite when the dilution ratio is more than 1.0 at 80 degrees C. While in the 0.5 diluted brine, only one reaction step of pinnoite crystal formation was observed and its transformation mechanism was discussed based on dissociation of polyborates in brine. Besides, the origin of pinnoite mineral deposited on salt lake bottom was proposed.
KeywordPinnoite Phase Transformation Sulfate-type Salt Lake Dilution Method
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS Research AreaCrystallography ; Physics
WOS SubjectCrystallography ; Physics, Condensed Matter
WOS IDWOS:000417418000009
Citation statistics
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6406
Collection青海盐湖研究所知识仓储
盐湖资源综合利用工程技术中心
盐湖资源与化学实验室
Affiliation1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining, Qinghai, Peoples R China
2.Qinghai Engn & Technol Res Ctr Comprehens Utiliz, Xining, Qinghai, Peoples R China
3.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Resources Chem Qinghai Prov, Xining, Qinghai, Peoples R China
Recommended Citation
GB/T 7714
Peng, Jiaoyu,Bian, Shaoju,Lin, Feng,et al. Synthesis and formation mechanism of pinnoite in sulfated-type boron concentrated brine by dilution method[J]. PHASE TRANSITIONS,2017,90(10):1025-1033.
APA Peng, Jiaoyu,Bian, Shaoju,Lin, Feng,Wang, Liping,Dong, Yaping,&Li, Wu.(2017).Synthesis and formation mechanism of pinnoite in sulfated-type boron concentrated brine by dilution method.PHASE TRANSITIONS,90(10),1025-1033.
MLA Peng, Jiaoyu,et al."Synthesis and formation mechanism of pinnoite in sulfated-type boron concentrated brine by dilution method".PHASE TRANSITIONS 90.10(2017):1025-1033.
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