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Calcium Carbonate Precipitation in Ultrasonic Field

Domenii publicaţii > Stiinte ingineresti + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: C. Mateescu, M. Mocioi, C. Sarbu, R. Isopescu, I. Chilibon

Editorial: P.J. Janssens, I.H. ter Horst, S. Jiang, ISBN: 1-58603-658-0, 13th International Workshop on Industrial Crystallization, BIWIC 2006, Delft, Nederlands, 13-15 Sept 2006, p.193-200, 2006.

Rezumat:

An unconventional synthesis method, implying ultrasonic field, was tested in order to improve the properties of CaCO3 precipitated via liquid-liquid route.
Working parameters for calcium carbonate precipitation in the absence of ultrasonic field so that the solid material displays aragonite morphology were established.
The evolution of the precipitation reaction in ultrasonic field provided a solid phase with aragonite morphology slightly impurified with vaterite.
Grain size distribution was significantly improved. The solid phase presents an important fraction of nanometer size particles.

Cuvinte cheie: Calcium Carbonate, Ultrasonic Field