| 机械化学法合成羟基磷灰石过程中的"爆炸式"反应 |
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| 引用本文： | 赵中伟,王明. 机械化学法合成羟基磷灰石过程中的"爆炸式"反应[J]. 功能材料, 2007, 38(3): 499-501 |
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| 作者姓名： | 赵中伟 王明 |
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| 作者单位： | 中南大学,冶金科学与工程学院,湖南,长沙,410083 |
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| 摘 要： | 应用机械化学原理,研究了在振动磨样机中由磷酸二氢钙(MCPM)和氢氧化钙合成羟基磷灰石(HAP)过程的动力学机制,并建立了相应的动力学模型.结果表明,合成过程为生成中间产物二水磷酸氢钙(DCPD)的两步式反应,其中第二步反应在第一步反应结束后才开始,并且在很短的时间内(＜30s)迅速完成,即发生了"爆炸式"反应,反应过程可用类Avrami方程进行表征.探讨了发生"爆炸式"反应的可能机理.
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| 关 键 词： | 机械化学 羟基磷灰石 " 爆炸式" 反应 动力学 |
| 文章编号： | 1001-9731（2007）03-0499-03 |
| 修稿时间： | 2006-08-30 |
The explosive reaction on the synthesis of hydroxyapatite by mechanochemical method |
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| ZHAO Zhong-wei,WANG Ming. The explosive reaction on the synthesis of hydroxyapatite by mechanochemical method[J]. Journal of Functional Materials, 2007, 38(3): 499-501 |
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| Authors: | ZHAO Zhong-wei WANG Ming |
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| Affiliation: | School of Metallurgical Science and Engineering,Central South University,Changsha .410083,China |
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| Abstract: | The kinetic mechanism of the synthesis of hydroxyapatite(HAP) from monocalcium phosphate(MCPM) and calcium oxide in vibratory mill was studied by using mechanochemical principle,and a corresponding kinetic model was established.The results showed that the synthesis reaction was biphasic,because of the presence of the intermediate product dicalcium phosphate dehydrate(DCPD).The second step reaction occurred just at the end of the first one and ended rapidly in less than 30s,which was called as explosive reaction.The pseudo-Avrami equation was used to describe the reaction processes.The possible mechanism of the explosive reaction was also discussed in the paper. |
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| Keywords: | mechanochemistry hydroxyapatite explosive reaction kinetics |
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