| 氯碳酸镁盐的溶解、转化机制及动力学研究 |
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| 引用本文： | 夏树屏,童义平,高世扬.氯碳酸镁盐的溶解、转化机制及动力学研究[J].无机化学学报,1995,11(1):8-14. |
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| 作者姓名： | 夏树屏 童义平 高世扬 |
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| 作者单位： | 中国科学院青海盐湖研究所 |
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| 摘 要： | 采用ＮＨ４ＨＣＯ３溶液逐滴加入浓的ＭｇＣｌ２水溶液中，经回流沸腾制得氯碳酸镁盐的晶体２ＭｇＣＯ３．Ｍｇ（ＯＨ）２．ＭｇＣｌ２．６Ｈ２Ｏ。
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| 关 键 词： | 碳酸镁 溶解动力学 结晶 氯化镁 氢氧化镁 复盐 |
| 收稿时间： | 1/4/1994 12:00:00 AM |
STUDY ON KINETIC MECHANISM OF DISSOLUTION AND TRANSFORMATION OF Mg-CHLOROCARBONATE |
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| Xia Shuping,Tong Yiping and Gao Shiyang.STUDY ON KINETIC MECHANISM OF DISSOLUTION AND TRANSFORMATION OF Mg-CHLOROCARBONATE[J].Chinese Journal of Inorganic Chemistry,1995,11(1):8-14. |
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| Authors: | Xia Shuping Tong Yiping and Gao Shiyang |
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| Institution: | Qinghai Institute of Salt Lakes. Academic Sinica. Xining 810008 |
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| Abstract: | Mg-chlorocarbonate, 2MgCO3·Mg(OH)2·MgCl2·6H2O, was prepared by adding NH4HCO3, solution into boiling concentrated solution of MgCl2.The process of dissolution of this double salt has three stages: dissolution, induction and transformation. The inversion products were 4MgCO3·Mg(OH)2·mH2O. The value of m depends on temperature.The experiment showed that Mg-chlorocarbonate was transformated to final product 5MgO·CO2·5H2O. The experiment data of dissolution process have been fitted with STUMM EQUATION by computer and the kinetic equation of 4MgCO3·Mg(OH)2·mH2O with different water have been obtained. It indicated that the dissolution process may be controlled by diffusion. |
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| Keywords: | Mg-chlorocarbonate phase transformation mechanism dissolution kineticscrystallization kinetics |
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