碳酸钙微球的制备及其机理  

Synthesis and mechanism research of calcium carbonate microspheres

作　　者：陈继伟[1] 沈娟[1] 胡文远[1] 金波[2] 齐永成[1] CHEN Jiwei SHEN Juan HU Wenyuan JIN Bo QI Yongcheng(School of Materials Science and Engineering State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology Mianyang 621010, China)

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010 [2]西南科技大学四川省非金属国家重点实验室,四川绵阳621010

出　　处：《中国粉体技术》2016年第6期69-74,共6页China Powder Science and Technology

基　　金：国家自然科学基金项目;编号:21201142

摘　　要：为了制备出形貌更好的碳酸钙微球,以氯化钙和碳酸钠为原料,通过乙醇溶液和添加柠檬酸2种不同的方法制备。利用场发射扫描电镜、X射线衍射和傅里叶变换红外光谱等方法对制备的产物进行分析。结果表明,50%体积分数的乙醇溶液与1.0 mol·L-1柠檬酸调控下都能制备出形貌良好的碳酸钙微球,采用柠檬酸制备的碳酸钙微球成球性较好,制备的碳酸钙微球均由不同的晶型构成。实验通过改变反应条件进一步探索了在柠檬酸控制下碳酸钙微球的成球机理。In order to prepare a better morphology of calcium carbonate microspheres, calcium chloride and sodium carbonate were used as raw materials, and two different ways were used to prepared calcium carbonate microspheres. The products were characterized by Field emission scanning electron microscope, X-ray diffraction and Fourier transform infrared spectroscopy. Results show that under the control of the volume fraction of 50 % ethanol and 1.0 mol/L citric acid solution can prepared good morphology of calcium carbonate microsphres, and the morphology of as-prepared calcium carbonate microspheres better by adding citric acid than the other method, and the as-prepared samples by two methods were composed by different crystal forms. The mechanism is also discussed through changing the reaction conditions.

关 键 词：碳酸钙 微球 乙醇 柠檬酸 

分 类 号：O611[理学—无机化学]