L 77 Linnikov, O. D. Spontaneous crystallization of sodium chloride from aqueous-ethanol solutions. Part 1. Kinetics and mechanism of the crystallization process [Текст] / O. D. Linnikov // Crystal Research and Technology. - 2006. - Vol. 41, № 1. - С. 10-17. - Библиогр. : с. 17 (12 назв.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ХЛОРИД НАТРИЯ -- КРИСТАЛЛИЗАЦИЯ Аннотация: The kinetics of spontaneous crystallization of sodium chloride from aqueous-ethanol solutions were studied. During the crystallization the electrical conductance and optical transmission of the supersaturated solutions were measured automatically. For monitoring of the total surface of growing potassium chloride crystals at the crystallization the turbidimetric method was used. The growth rate and activation energy were determined. The crystal growth rate was proportional to supersaturation. When the volume fraction of ethanol in solution increased from 14.85 to 29.72%, the activation energy of the growth process did not change and was about 50 kJ⋅mol-1. Aggregation of the crystals was found. The aggregation kinetics of the crystals may be described approximately by the famous Smoluchowski equation for coagulation of colloidal particles Полный текст |