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Spontaneous crystallization of sodium chloride from aqueous‐ethanol solutions – Part 2: Mechanism of aggregation and coalescence of crystals
Author(s) -
Linnikov Oleg D.
Publication year - 2006
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200510545
Subject(s) - supersaturation , crystallization , chemistry , aqueous solution , kinetics , sodium , coagulation , coalescence (physics) , chloride , colloid , chemical engineering , inorganic chemistry , organic chemistry , psychiatry , astrobiology , psychology , physics , quantum mechanics , engineering
Abstract Published data on aggregation kinetics of sodium chloride crystals at its spontaneous crystallization from supersaturated aqueous‐ethanol solutions were analysed. It was found that the crystals coalesced through contact nucleus‐bridges between them 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 the system. The specific surface energy of sodium chloride 0.95 mJ/m 2 was found. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)