RHYTHMIC CRYSTALLIZATION OF ASCORBIC-ACID PRECIPITATED FROM ITS METHANOL SOLUTIONS
RHYTHMIC CRYSTALLIZATION OF ASCORBIC-ACID PRECIPITATED FROM ITS METHANOL SOLUTIONS
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DOI：
10.1016/0021-9797(84)90250-9
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发表时间：
1984-01-01
影响因子：
9.9
通讯作者：
SENO, M
中科院分区：
文献类型：
--
作者：
IWAMOTO, K;MITOMO, S;SENO, M
作为耗散结构形成的一个例子，在抗坏血酸从甲醇溶液中沉淀过程中出现了有节奏的结晶。在该系统中，观察到大小螺距的规则同心圆。基于Mullins-Sekerka不稳定性的支化过程是自催化的，提出了支化晶体数量与过饱和度之间存在滞后关系的假设，并由此解释了有节奏的结晶过程。
As an example of the formation of dissipative structures, appearance of rhythmic crystallization during precipitation of ascorbic acid from its methanol solution is reported. In this system, regular concentric rings of large and small pitches were observed. The branching process by the Mullins-Sekerka instability proceeds autocatalytically, and the hypothesis of a hysteresis relation of the number of branched crystals to the degree of supersaturation is proposed and therefrom the rhythmic crystallization will be explained.