Studies on nucleation phenomena occurring in aqueous solutions supersaturated with calcium sulfate. II. The induction time

Autor:	Douglas Martin Keller, O. E. Hileman, Ronald E. Massey
Rok vydání:	1978
Předmět:	Crystallography Supersaturation Aqueous solution chemistry Organic Chemistry Nucleation Thermodynamics Induction time chemistry.chemical_element General Chemistry Calcium Catalysis
Zdroj:	Canadian Journal of Chemistry. 56:3096-3103
ISSN:	1480-3291 0008-4042
DOI:	10.1139/v78-506
Popis:	The results of a set of experiments designed to delineate the effects of changes in temperature and supersaturation levels on the length of the time interval between establishing those levels and the detection of a steady-state nucleation rate of CaSO4•2H2O from solution are reported. The data were obtained using the droplet technique coupled with insitu generation of SO42− at such a rate that the system experienced a near step function change in the driving force with time. A theoretical model for the length of the time interval is derived and compared with the data. Empirical modeling studies led to a rather different functional relationship that is compared with a theoretical model discussed in the literature by Frisch and Carlier. The functional form of an equation relating together the lag time and the subsequent nucleation rate exhibited by a given system is proposed.
Databáze:	OpenAIRE
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