A Model for Simultaneous Homogeneous and Heterogeneous Nucleation

✍ Scribed by Toshiyuki Nomura; Manuel Alonso; Yasuo Kousaka; Ken Tanaka

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 392 KB
• Volume: 203
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1998.5530

✦ Synopsis

ing size-distributed cells and assuming that homogeneous A modified cell-model is proposed to describe the process of nucleation could only take place (simultaneously with hetsimultaneous homogeneous and heterogeneous nucleation. The erogeneous nucleation) in large cells. In the present work, modification consists in considering that the seed particles are besides a summary of the model presented in those two randomly distributed in the system and in assuming that homogepapers, a simple analysis will also be presented which perneous nucleation can only occur in those places where the interparmits the estimation of the number fraction of cells where ticle distance is large. The model predicts the relative extent of homogeneous nucleation takes place. The theoretical predichomogeneous and heterogeneous nucleation as a function of the tions will be compared with experimental results obtained operating conditions (concentration of seed particles and monofor different seed particle size and monomer concentration.

mers and seed-to-nucleus size ratio). The calculations are in very good agreement with the results obtained in liquid-phase nucleation experiments.