Abstract

The dependence of the induction period on supersaturation during the nucleation of CaCO₃ and CaSO₄ ∙ 2H₂O is experimentally determined and the interfacial tension values are measured. Using the constant concentration method, the kinetics of crystal growth of both salts is studied, the dependences of the crystal growth rate on solution supersaturation are obtained, and the kinetic order of the growth reaction is determined. Possible mechanisms of nucleation and growth are considered. The kinetics of transformation of the solid phase during the entire process of reagent precipitation is studied. The evolutionary curves are compared with the calculation results for the previously proposed models. It is shown that the model dependences can be used to verify and adjust experimental data.

中文翻译：

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水溶液中碳酸钙和硫酸钙晶体成核和生长的动力学

摘要

CaCO ₃和CaSO ₄ ∙2H ₂成核过程中诱导期对过饱和的依赖性通过实验确定O，并测量界面张力值。使用恒定浓度法，研究了两种盐的晶体生长动力学，获得了晶体生长速率对溶液过饱和的依赖性，并确定了生长反应的动力学顺序。考虑了成核和生长的可能机制。研究了试剂沉淀整个过程中固相转变的动力学。将演化曲线与先前提出的模型的计算结果进行比较。结果表明，模型相关性可用于验证和调整实验数据。