Investigation of solute nucleation in levitated solution droplets
An experimental technique that involves the use of a single micrometer-sized particle suspended electrodynamically in a laser beam has been developed and shown to have great potential for studying crystal nucleation from aqueous electrolyte solutions. Critical supersaturations required for the onset of solute crystallization have been determined for the NaCl-H/sub 2/O and the (NH/sub 4/)/sub 2/SO/sub 4/-H/sub 2/O systems. The data so obtained are used, in conjunction with nucleation theory and electrolyte solution thermodynamics, to deduce the interfacial free energy, shape, and size of the critical nucleus. For both systems, the critical nucleus is a compact microcrystal composed of only a few unit cells. 36 references, 5 figures, 2 tables.
- Research Organization:
- Brookhaven National Lab., Upton, NY
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5975174
- Journal Information:
- J. Colloid Interface Sci.; (United States), Journal Name: J. Colloid Interface Sci.; (United States) Vol. 98:2; ISSN JCISA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
AEROSOLS
ALKALI METAL COMPOUNDS
AMMONIUM COMPOUNDS
AMMONIUM SULFATES
CHLORIDES
CHLORINE COMPOUNDS
COLLOIDS
CRYSTAL GROWTH
CRYSTALLIZATION
DATA
DISPERSIONS
ELECTROMAGNETIC RADIATION
EXPERIMENTAL DATA
HALIDES
HALOGEN COMPOUNDS
HYDRATES
INFORMATION
LASER RADIATION
NUCLEATION
NUMERICAL DATA
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
RADIATIONS
SODIUM CHLORIDES
SODIUM COMPOUNDS
SOLS
SULFATES
SULFUR COMPOUNDS
THERMODYNAMICS