Synthesis and formation mechanism of pinnoite in sulfated-type boron concentrated brine by dilution method

doi:10.1080/01411594.2017.1288230

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	Synthesis and formation mechanism of pinnoite in sulfated-type boron concentrated brine by dilution method
	Peng, Jiaoyu; Bian, Shaoju; Lin, Feng; Wang, Liping; Dong, Yaping; Li, Wu
第一作者	Peng, Jiaoyu
	2017
发表期刊	PHASE TRANSITIONS
ISSN	0141-1594
卷号	90 期号:10 页码:1025-1033
关键词	Pinnoite Phase Transformation Sulfate-type Salt Lake Dilution Method
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.
DOI	10.1080/01411594.2017.1288230
语种	英语
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
推荐引用方式 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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