| 苹果酸杂质存在条件下的乳酸锌结晶提纯 |
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| 引用本文： | 张相洋,钟亮,钱刚,周兴贵,袁渭康. 苹果酸杂质存在条件下的乳酸锌结晶提纯[J]. 化工学报, 2010, 61(7): 1815-1820 |
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| 作者姓名： | 张相洋 钟亮 钱刚 周兴贵 袁渭康 |
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| 作者单位： | 化学工程联合国家重点实验室(华东理工大学),上海,200237;化学工程联合国家重点实验室(华东理工大学),上海,200237;化学工程联合国家重点实验室(华东理工大学),上海,200237;化学工程联合国家重点实验室(华东理工大学),上海,200237;化学工程联合国家重点实验室(华东理工大学),上海,200237 |
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| 基金项目： | 上海市科委国际科技合作项目 |
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| 摘 要： | 研究了苹果酸杂质存在条件下溶液结晶过程参数对乳酸锌晶体产品收率、纯度、晶体结构和形态的影响。结果表明,溶液结晶过程参数对乳酸锌晶体结构和形态没有明显影响,但与纯乳酸锌晶体相比,苹果酸的引入增加了乳酸锌晶体的长径比。晶体纯度的下降与产品收率的上升为近似线性关系,但如结晶过程中发生大量二次成核,晶体产品的纯度将显著下降。
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| 关 键 词： | 乳酸锌 苹果酸 成核 晶体生长 晶种 晶习 |
| 收稿时间： | 2010-04-13 |
| 修稿时间： | 2010-4-20 |
Purification of zinc lactate by crystallization in presence of malic acid |
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| ZHANG Xiangyang,ZHONG Liang,QIAN Gang,ZHOU Xinggui,YUAN Weikang. Purification of zinc lactate by crystallization in presence of malic acid[J]. Journal of Chemical Industry and Engineering(China), 2010, 61(7): 1815-1820 |
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| Authors: | ZHANG Xiangyang ZHONG Liang QIAN Gang ZHOU Xinggui YUAN Weikang |
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| Abstract: | Crystallization of zinc lactate in the presence of malic acid as an impurity was investigated, and the effects of operating variables on the final solid product yield, purity, crystal structure and habit were studied. The results showed that the structure and habit of the impure crystals were hardly changed under different operating conditions, while their length-diameter ratios increased comparing with the pure zinc lactate crystals. Moreover, the solid purity decreased linearly with the increasing yield. However, the purity decreased significantly when substantial secondary nucleation occurred in crystallization. |
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| Keywords: | zinc lactate malic acid nucleation crystal growth seed crystal habit |
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