| 加压碳化法制备微纳米棒状碳酸钙 |
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| 引用本文：王爽,燕溪溪,苏晴,黎晨欣,申韬艺,肖容慧,王利军.加压碳化法制备微纳米棒状碳酸钙[J].上海第二工业大学(中文版),2021,(2):123-130 |
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| 基金项目:宁波市 3315 资本引才计划 (2020C-04-T) 资助 |
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| 中文摘要:以六偏磷酸钠作为晶型控制剂, 在碳化法的基础上采用加压的方式制备出分散度较好、粒径可达到微纳米
级别的碳酸钙, 形貌呈明显的棒状。研究了反应温度、反应时间、六偏磷酸钠的添加量、氢氧化钙的浓度等实验条
件对制备碳酸钙样品的影响, 得出制备的最佳条件。分别利用 X 射线衍射仪 (XRD)、扫描电子显微镜 (SEM)、粒度
分析仪等测试方式对合成产品的微观结构和形貌进行表征。结果表明: 在反应温度为 10 ℃, 氢氧化钙浓度为 2%,
六偏磷酸钠添加量为氢氧化钙质量的 2%, 反应时间为 4 h 的条件下, 所制备出的棒状碳酸钙的分散度和均一性最
好。同时, 实验制备的微纳米棒状碳酸钙的平均直径约 0.5 μm, 长度为 1～2 μm。 |
| 中文关键词:加压碳化 六偏磷酸钠 微纳米技术 棒状碳酸钙 |
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| Preparation of Micro-Nano Rod-Shaped Calcium Carbonate by Pressurized Carbonization Method |
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| Abstract:Sodium hexametaphosphate is used as the crystal form control agent. Using the pressurized method on the basis of carbonization, calcium carbonate with a good dispersion degree and particle size of micro-nano-level was prepared. The morphology is
obviously rod-shaped. The effects of experimental conditions such as reaction temperature, reaction time, addition amount of sodium
hexametaphosphate and calcium hydroxide concentration on the preparation of calcium carbonate samples were studied, and the best
conditions for preparation were obtained. X-ray diffractometer (XRD), scanning electron microscope (SEM), particle size analyzer and
other test methods were used to characterize the microstructure and morphology of the synthesized products. The results show that under
the conditions of reaction temperature of 10 ℃, calcium hydroxide concentration of 2%, sodium hexametaphosphate addition of 2% by
mass of calcium hydroxide, and reaction time of 4 h, the dispersed degree and uniformity of prepared rod-shaped calcium carbonate are
the best. At the same time, the experimentally prepared micro-nano rod-shaped calcium carbonate has an average diameter of approximately 0.5 μm and a length of 1 to 2 μm. |
| keywords:high-pressure carbonization sodium hexametaphosphate micro-nano technology rod-shaped calcium carbonate |
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