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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
发表期刊PHASE TRANSITIONS
卷号90期号:10页码:1025-1033
文章类型Review
摘要The 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.
关键词Pinnoite Phase Transformation Sulfate-type Salt Lake Dilution Method
WOS标题词Science & Technology ; Physical Sciences
收录类别SCI
语种英语
WOS研究方向Crystallography ; Physics
WOS类目Crystallography ; Physics, Condensed Matter
WOS记录号WOS:000417418000009
引用统计
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/6406
专题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
作者单位1.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
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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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