| 纳米及微米级六角片状氢氧化镁的制备 |
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| 引用本文： | 宋雪雪,李丽娟,姬连敏,刘志启,聂锋,曾忠民,宋富根,时东,彭小五,张利诚,李慧芳. 纳米及微米级六角片状氢氧化镁的制备[J]. 盐湖研究, 2018, 26(2): 66-74, 80 |
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| 作者姓名： | 宋雪雪 李丽娟 姬连敏 刘志启 聂锋 曾忠民 宋富根 时东 彭小五 张利诚 李慧芳 |
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| 作者单位： | 中国科学院青海盐湖研究所中国科学院盐湖资源综合高效利用重点实验室;青海省盐湖资源综合利用工程技术中心 |
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| 基金项目： | 青海省科技厅科技成果转化专项(2016-GX-145)；青海省科技厅国际科技合作计划(2015-HZ-812) |
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| 摘 要： | 以氯化钠为底料,水氯镁石和氢氧化钠为原料,不添加任何添加剂,采用双柱沉淀—水热法制备粒度分布均匀、分散性良好的氢氧化镁。研究了进料速度、2N_(Mg)/N_(Na)、物料浓度、水热温度、水热时间等因素对氢氧化镁粒径、形貌、过滤性能的影响。通过粒度分析仪、X射线衍射仪、低真空扫描电子显微镜对产品的粒度分布、结构和形貌进行了表征。结果表明,本研究得到的样品分散性好,粒度分布均匀,形貌为规则的六角片状,粒径为400~600 nm的纳米级氢氧化镁或者1~2μm的微米级氢氧化镁。
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| 关 键 词： | 水热改性 纳米氢氧化镁 六角片状 |
| 收稿时间： | 2016-12-06 |
| 修稿时间： | 2018-01-29 |
Preparation of Nano and Micron-sized Hexagonal Magnesium Hydroxide |
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| SONG Xue-xue,LI Li-juan,JI Lian-min,LIU Zhi-qi,NIE Feng,ZENG Zhong-min,SONG Fu-gen,SHI Dong,PENG Xiao-wu,ZHANG Li-cheng and LI Hui-fang. Preparation of Nano and Micron-sized Hexagonal Magnesium Hydroxide[J]. Journal of Salt Lake Research, 2018, 26(2): 66-74, 80 |
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| Authors: | SONG Xue-xue LI Li-juan JI Lian-min LIU Zhi-qi NIE Feng ZENG Zhong-min SONG Fu-gen SHI Dong PENG Xiao-wu ZHANG Li-cheng LI Hui-fang |
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| Affiliation: | Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences,Xining,810008,China;Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources,Xining,810008,China,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences,Xining,810008,China;Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources,Xining,810008,China,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences,Xining,810008,China;Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources,Xining,810008,China,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences,Xining,810008,China;Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources,Xining,810008,China,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences,Xining,810008,China;Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources,Xining,810008,China,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences,Xining,810008,China;Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources,Xining,810008,China,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences,Xining,810008,China;Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources,Xining,810008,China,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences,Xining,810008,China;Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources,Xining,810008,China,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences,Xining,810008,China,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences,Xining,810008,China and Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences,Xining,810008,China |
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| Abstract: | In this work, magnesium hydroxide with uniform morphology and particle size was synthesized via double injected precipitation-hydrothermal treatment method without any organic additive or catalyst using bischofite and NaOH solution as raw materials, NaCl solution as the substrate. The influence of feed speed, 2NMg/NNa, concentrations, hydrothermal temperatures, hydrothermal durations on the particle size, morphology and filtration property of magnesium hydroxide was investigated. The particle size and its distribution, crystal phase and morphology of the product were characterized by laser particle size analyzer, XRD and SEM. The experimental results indicated that the prepared sample was of Regular hexagonal plates, having a diameter of 400-600 nm or 1-2 um, and with even sizes and good dispersibility. |
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| Keywords: | Hydrothermal modification Nano-magnesium hydroxide Hexagonal |
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