头孢唑林钠结晶热力学 - 淘金者论文 关键词】 头孢唑林钠； 结晶； 热力学； 介稳区 [gap=688]KEY WORDS Cefazolin sodium pentahydrate; Crystallization; Thermodynamics; Metastable zone
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Firstly, the metastable zone width was measured through experiments and predicted by theoretical computation respectively. The results of the two methods were comparable and could provide a criterion for the control of the supersaturation in the industrial crystallization.
本文首先用实验测定了杀虫单结晶体系的介稳区宽度，并在此基础上针对有机高粘度、扩散控制的结晶过程进行了介稳区宽度的理论计算，两者结果较为接近，说明此计算方法是可行的，能够为工业结晶提供一个可靠的过饱和度范围。
参考来源 - 杀虫单结晶过程研究With the increase of agitiation velocity , the width of metasable zone is becoming narrow when the cooling speed is fixed .
随冷却速度的加快，介稳区宽度也在增加。
参考来源 - 优先结晶法拆分对羟基苯甘氨酸The influence of power ultrasond on the solventing-out crystallization of andrographolide was investigated. The effect of ultrasound on homogeneous nucleation was studied by measuring the induction time and metastable zone width,the main size and shape of results crystal.
将超声波引入穿心莲内酯溶析结晶过程中,考察功率超声波对诱导期、介稳区、晶体粒度和品型的影响,研究结果表明在超声波的作用下穿心莲内酯在乙醇水溶液中结晶诱导期缩短,介稳区宽度明显变窄,经分析,超声波在溶液中传播时引起的振动和能量变化加速了晶核的形成,空化产生的射流作用又使得滞留层变薄,降低了成核阻力。
参考来源 - 功率超声在溶析结晶中的应用·2,447,543篇论文数据，部分数据来源于NoteExpress
醋酸钙杂质的存在使木糖溶液介稳区变窄，晶体生长速率加快。
The metastable zone is narrowed, and the crystal growth rate is increased in the presence of calcium acetate as an impurity.
结果表明：磷酸二氢铵溶液的介稳区宽度随溶液饱和温度的升高而线性下降；
The results showed that MZW of ADP decreased with the rise of saturation temperature linearly.
采用激光法测定了甘氨酸的结晶介稳区，并分别考察了降温速率和搅拌速率对其介稳性质的影响；
The metastable zone was measured by laser method and the effects of cooling rate and agitation speed were investigated experimentally.
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