Nucleation of Quiet Supersaturated Potassium Chloride Solutions.

Preckshot, George W.; Brown, George Granger

doi:10.1021/ie50510a038

Cited by 32 publications

(18 citation statements)

References 7 publications

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“…Most of published experimental data on nucleation of crystal at crystallization in solutions are indirect, i.e. were obtained at measurements of circumstantial parameters of crystallization process (for example, the electrical conductance or light scattering of solution at crystallization) [10][11][12][13]. These data indicate that nucleation at crystallization from solutions is described by equations of classical crystallization theory [14][15][16][17][18].…”

Section: Theorymentioning

confidence: 99%

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Spontaneous crystallization of potassium chloride from aqueous and aqueous‐ethanol solutions; Part 3: Model of the crystallization process

Linnikov¹

2006

Cryst. Res. Technol.

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A model of spontaneous crystallization process was proposed. The model describes kinetics of the crystallization process after the end of the induction period. To test the model the published earlier data on crystallization and aggregation kinetics of potassium chloride at its spontaneous crystallization from supersaturated aqueous and aqueous-ethanol solutions were used. It was found excellent coincidence of the experimental and theoretical data on concentration of the salt and the total number of crystals in solution at crystallization. Somewhat change for the worse was at the theoretical calculations of crystal size distribution at the end of the crystallization process. It indicated that the ways of calculation of size of crystals and their weight fraction in deposit were very approximate. The model allows predicting with satisfactory accuracy kinetics of crystallization using such general parameters of potassium chloride as the specific surface energy and the height of the nucleus-bridges between crystals at coalescence. It needs further test of the model for other salts.

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Section: Theorymentioning

confidence: 99%

“…where C i is the initial concentration (before crystallization, at τ=0) of supersaturated solution of salt (kg⋅m -3 ). One can solve simultaneously equations (7), (9), (10) and then obtain an expression for crystallization rate of salt from solution after the end of the induction period:…”

Section: Theorymentioning

confidence: 99%

Spontaneous crystallization of potassium chloride from aqueous and aqueous‐ethanol solutions; Part 3: Model of the crystallization process

Linnikov¹

2006

Cryst. Res. Technol.

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“…Unfortunately, comparison of the found value of σ with published data is difficult since the late ones are not very numerous. Thus, we found only three works [25][26][27] where the specific surface energy of potassium chloride was determined experimentally.…”

Section: Experimental Conditionsmentioning

confidence: 99%

Spontaneous crystallization of potassium chloride from aqueous and aqueous‐ethanol solutions Part 2: Mechanism of aggregation and coalescence of crystals

Linnikov

2004

Cryst. Res. Technol.

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Published data on aggregation kinetics of potassium chloride crystals at its spontaneous crystallization from supersaturated aqueous and aqueous-ethanol solutions were analysed. It was found that the crystals coalesced through contact nucleus-bridges according to the mechanism proposed by Polak. The kinetics of aggregation were described by the Smoluchowski equation for coagulation of colloidal particles. The kinetic coefficient of aggregation process depended on supersaturation, temperature of solution and other characteristics of system. The specific surface energy of potassium chloride 0.98 mJ/m 2 was found.

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“…and (4) (5) where the upper limit of the summation is taken to infinity, since the number of solute molecules in the critical nucleus is considered to be infinite in a saturated solution.…”

Section: Theoreticalmentioning

confidence: 99%

Studies of the Estimation of the Interfacial Energy of Embryo in Solid-Liquid Systems

Nakai¹

1969

Bulletin of the Chemical Society of Japan

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A novel method for the estimation of the interfacial energy of an embryo from the solubility data in solid-liquid systems has been proposed. The distribution function of embryos in solutions derived thermodynamically has been used as the base for the present treatment. The interfacial energies were calculated numerically for three different combinations of solute and solvent, namely, water-inorganic salt, water-organic compound, and organic solvent-organic compound. A fairly good linear relationship was observed between the interfacial energies calculated and the temperatures over the whole temperature range of solubility data. The semiempirical equation describing the relationship between the interfacial energy of the embryo and the temperature in the solid-liquid system was found to be exactly the same as that between the surface energy of the liquid in contact with gas through a free surface and the temperature. The size dependence of the interfacial energy has also been briefly described.

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Nucleation of Quiet Supersaturated Potassium Chloride Solutions.

Cited by 32 publications

References 7 publications

Spontaneous crystallization of potassium chloride from aqueous and aqueous‐ethanol solutions; Part 3: Model of the crystallization process

Spontaneous crystallization of potassium chloride from aqueous and aqueous‐ethanol solutions; Part 3: Model of the crystallization process

Spontaneous crystallization of potassium chloride from aqueous and aqueous‐ethanol solutions Part 2: Mechanism of aggregation and coalescence of crystals

Studies of the Estimation of the Interfacial Energy of Embryo in Solid-Liquid Systems

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