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菱镁矿气泡模板法制备三水碳酸镁晶体及其生长机理

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文章导航 > 矿产保护与利用 > 2022 > 42(2): 114-119

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刘珈伊, 王余莲, 时天骄, 王琪浩, 朱益斌, 张俊, 于雨, 袁志刚. 菱镁矿气泡模板法制备三水碳酸镁晶体及其生长机理[J]. 矿产保护与利用, 2022, 42(2): 114-119. doi: 10.13779/j.cnki.issn1001-0076.2022.02.015
引用本文: 刘珈伊, 王余莲, 时天骄, 王琪浩, 朱益斌, 张俊, 于雨, 袁志刚. 菱镁矿气泡模板法制备三水碳酸镁晶体及其生长机理[J]. 矿产保护与利用, 2022, 42(2): 114-119. doi: 10.13779/j.cnki.issn1001-0076.2022.02.015
shu
LIU Jiayi, WANG Yulian, SHI Tianjiao, WANG Qihao, ZHU Yibin, ZHANG Jun, YU Yu, YUAN Zhigang. Preparation and Growth Mechanism of Nesquehonite Crystal Crystals by Bubble Template Method with Magnesite[J]. Conservation and Utilization of Mineral Resources, 2022, 42(2): 114-119. doi: 10.13779/j.cnki.issn1001-0076.2022.02.015
Citation: LIU Jiayi, WANG Yulian, SHI Tianjiao, WANG Qihao, ZHU Yibin, ZHANG Jun, YU Yu, YUAN Zhigang. Preparation and Growth Mechanism of Nesquehonite Crystal Crystals by Bubble Template Method with Magnesite[J]. Conservation and Utilization of Mineral Resources, 2022, 42(2): 114-119. doi: 10.13779/j.cnki.issn1001-0076.2022.02.015
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菱镁矿气泡模板法制备三水碳酸镁晶体及其生长机理

  • 沈阳理工大学 材料科学与工程学院，辽宁 沈阳 110159

  • 基金项目:
    国家自然科学基金(51804200)
详细信息
    作者简介: 刘珈伊(1995-)，男，河北秦皇岛人，硕士研究生，主要研究方向为菱镁矿制备三水碳酸镁、碱式碳酸镁及其理论研究。E-mail: liujiayizz07@163.com
    通讯作者: 王余莲(1986-)，女，湖南衡阳人，博士，副教授，主要研究方向为矿物材料的制备及应用研究。E-mail: ylwang0908@163.com

  • 中图分类号: TD985;TQ132.2

Preparation and Growth Mechanism of Nesquehonite Crystal Crystals by Bubble Template Method with Magnesite

  • School of Materials Science and Engineering, Shenyang Ligong University, Shenyang 110159, Liaoning, China

More Information

    摘要

  • 以菱镁矿为原料，采用气泡模板法制备三水碳酸镁(MgCO3·3H2O)晶体，探究CO2、空气、N2三种气泡对晶体物相组成与形貌的影响。结果表明: CO2、空气、N2辅助下，所得产物为形貌不同的三水碳酸镁晶体，N2气泡对产物形貌具有调控作用。当通入尺寸为1 μm的N2气泡60 min时，获得光滑棒状与放射状晶体; N2气泡通入时间为120 min时，产物为多面体状与放射状晶体。N2气泡充当泡界模板，晶体沿着气泡表面生长形成新的棒状三水碳酸镁分枝，最终构筑成不规则多面体状和放射状三水碳酸镁晶体。

    Nesquehonite (MgCO3·3H2O) crystals were prepared by the method for bubble template using magnesite as raw material. The effects of CO2, air and N2 bubbles on the phase composition and morphology of the crystals were investigated. The results showed that the products obtained are nesquehonite crystals with different morphologies under the assistance of CO2, air and N2. When N2 bubbles with a size of 1 μm are introduced for 60 min, the obtained products are smooth rod-like and radial crystals; when bubbles are introduced for 120 min, the obtained products are polyhedral and radial crystals. The N2 bubbles were used as bubble boundary templates, and the crystals grew along the surface of the bubbles to form new rod-like branches of nesquehonite. Finally, irregular polyhedral and radial nesquehonite crystals were constructed.

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  • 图 1  不同气泡辅助下所得产物的XRD图谱

    Figure 1. 

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    图 2  不同气泡辅助下所得产物SEM图像

    Figure 2. 

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    图 3  通入不同尺寸N2气泡所得产物的SEM图像

    Figure 3. 

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    图 4  N2气泡通入不同时间所得产物的SEM图像

    Figure 4. 

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    图 5  N2气泡辅助下产物的XPS全图谱和Mg 1s、O 1s、C 1s高分辨谱图

    Figure 5. 

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    图 6  N2气泡辅助下MgCO3·3H2O晶体生长示意图

    Figure 6. 

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    表 1  菱镁矿与其煅烧所得轻烧氧化镁的化学组成

    Table 1.  Chemical composition of the magnesite and light-burned magnesia  /%

    组分 MgO SiO2 CaO TFe
    宽甸菱镁矿 47.61 0.66 0.50 -
    轻烧氧化镁 82.70 7.86 1.50 0.34
    下载: 导出CSV
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收稿日期:  2022-03-02
刊出日期:  2022-04-25

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