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| 硫酸锶晶体生长动力学研究 | |
| 引用本文： | 李彩虹,刘进荣,袁希钢. 硫酸锶晶体生长动力学研究[J]. 无机盐工业, 2005, 37(3): 14-16 |
| 作者姓名： | 李彩虹 刘进荣 袁希钢 |
| 作者单位： | 1. 天津大学化学工程研究所,天津,300072;内蒙古工业大学化工学院 2. 内蒙古工业大学化工学院 3. 天津大学化学工程研究所,天津,300072 |
| 摘 要： | 为了从控制晶体生长角度，说明制备纳米硫酸锶沉淀体系中存在的EDTA对产品粒径的影响作用，根据过程机理，用恒组成法研究硫酸锶晶体生长动力学。根据叠加模型和弱化模型，建立体系中有EDTA存在时，硫酸锶沉淀过程的晶体生长动力学模型。结果表明，硫酸锶沉淀过程中晶体生长属于表面反应控制机理。EDTA存在能降低晶体生长速率，有利于减小粉体粒径。 |
| 关 键 词： | 晶体生长 硫酸锶 恒组成法 EDTA |
| 文章编号： | 1006-4990(2005)03-0014-03 |
| 修稿时间： | 2004-11-08 |
Study on crystal growth kinetics for SrSO4 |
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| Li Caihong,Liu Jinrong,Yuan Xigang. Study on crystal growth kinetics for SrSO4[J]. Inorganic Chemicals Industry, 2005, 37(3): 14-16 | |
| Authors: | Li Caihong Liu Jinrong Yuan Xigang |
| Affiliation: | Li Caihong~ |
| Abstract: | In order to illuminate the effect of EDTA on product size from crystal growth point of view, the crystal kinetics of SrSO_(4) precipitation was investigated according to the mechanism preparing nano-SrSO_4 powder by method of constant composition. The crystal growth kinetic model for SrSO_4 precipitation process was established according to superposition model and weak interaction model when there was EDTA in the system. The results showed that the growth rate for SrSO_4 precipitation agreed with surface-reaction-limited mechanism.EDTA can inhibit the SrSO_4 crystal growth, as a result it was in favor of reducing powder size. |
| Keywords: | crystal growth SrSO_4 constant composition EDTA |
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