| 不同矿化时间下水杨酸对碳酸钙晶体生长的影响 |
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| 引用本文： | 朱虹,张群,许文娟. 不同矿化时间下水杨酸对碳酸钙晶体生长的影响[J]. 安庆师范学院学报(自然科学版), 2011, 17(2): 68-70,74 |
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| 作者姓名： | 朱虹 张群 许文娟 |
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| 作者单位： | 安庆师范学院 化学化工学院,安徽安庆,246011;安庆师范学院 化学化工学院,安徽安庆,246011;安庆师范学院 化学化工学院,安徽安庆,246011 |
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| 基金项目： | 国家自然科学基金(No.20871001)资助 |
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| 摘 要： | 以有机小分子水杨酸为添加剂对碳酸钙晶体的生长进行调控,并用X-射线粉末衍射(XRD)、扫描电子显微镜(SEM)和热重分析(TGA)方法对碳酸钙晶体的晶型和形貌进行了表征。结果显示,当pH值为7.0,加入0.04 mmoL水杨酸时,反应6小时和12小时后碳酸钙晶体的晶型为球霰石和方解石的混合晶型;而当矿化时间延长到24小时后,球霰石的晶型几乎消失,产物基本为方解石。
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| 关 键 词： | 矿化时间 水杨酸 碳酸钙 晶体生长 |
Effects of 2-hydroxybenzoic Acid on Growth of Calcium Carbonate Crystallite in Different Mineralization Time |
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| ZHU Hong,ZHANG Qun,XU Wen-juan. Effects of 2-hydroxybenzoic Acid on Growth of Calcium Carbonate Crystallite in Different Mineralization Time[J]. Journal of Anqing Teachers College(Natural Science Edition), 2011, 17(2): 68-70,74 |
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| Authors: | ZHU Hong ZHANG Qun XU Wen-juan |
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| Affiliation: | ZHU Hong,ZHANG Qun,XU Wen-juan(Department of Chemistry and Chemical Engineering,Anqing Normal College,Anqing,Anhui 246011) |
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| Abstract: | In this paper,2-hydroxybenzoic acid is used as additive to control the crystallization of CaCO3.The polymorph and morphology of crystals are characterized by X-ray diffraction(XRD)、scanning electron microscopy(SEM) and thermogravimetric analysis(TGA).As the results have shown,both spherical vaterite and calcite are produced after 6h and 12h when the amount of 0.04mmoL of 2-hydroxybenzoic acid is added and the pH reached 7.0.When the mineralization time is 24h,however,only calcite crystals are formed while spherical vaterite crystals almost disappeared. |
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| Keywords: | mineralization time 2-hydroxybenzoic acid calcium carbonate crystal growth |
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