| L—抗坏血酸结晶成核的研究 |
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| 引用本文： | 张杰 王胜春. L—抗坏血酸结晶成核的研究[J]. 河北化工, 2002, 0(4): 28-30 |
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| 作者姓名： | 张杰 王胜春 |
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| 作者单位： | [1]唐山中惠资产评估有限公司，河北唐山063000 [2]河北理工学院化工系，河北唐山063009 |
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| 摘 要： | 介绍了L－抗坏血酸在水和水－低碳醇混合溶剂中结晶成核的测定方法，同时还研究了甲醇，乙醇，异丙醇对其成核的影响。应用Kubota提出的成核模型，对加晶种操作过程进行了详细考察，按照不同的降温速率，测得溶液的极限过冷度，从而确定了有关动力学参数。讨论了温度对常数kb和指数n的影响。
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| 关 键 词： | L－抗坏血酸 结晶 成核 研究 醇－水物质 |
Study on Nucleation of L-ascorbic Acid |
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| ZHANG Jie,WANG Sheng-chun. Study on Nucleation of L-ascorbic Acid[J]. Hebei Chemical Engineering and Industry, 2002, 0(4): 28-30 |
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| Authors: | ZHANG Jie WANG Sheng-chun |
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| Affiliation: | ZHANG Jie1,WANG Sheng-chun2 |
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| Abstract: | It is presented the measurements of nucleation kinetics in L-ascorbic acid-water and L-ascorbic acid-alcohol-water systems.The influence of methanol,ethanol and isoproanol was studied.The model of nucleation for seeded solutions,proposed by Kubota,was used to describe the process.Constants in the equation were determined from measurement of critical supercooling of examined solution.The influence of temperature on constants was also discussed. |
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| Keywords: | L-ascorbic acid crystallization nucleation alcohol-water system |
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