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Updated: Jul 26, 2026
12:59
A System to Create Stable Nanoparticle Aerosols from Nanopowders
Published on: July 26, 2016
Simple Model of Aerosol Particle Formation by the Evaporation-Condensation Method
1Chemical Engineering Department, Osaka Prefecture University, 1-1 Gakuencho, Sakai, 599-8531, Japan
Journal of Colloid and Interface Science
|November 18, 2000
Summary
This study extends a homogeneous nucleation model to gas-phase systems, accurately predicting aerosol particle formation. The model
Area of Science:
- Engineering
- Chemical Engineering
- Aerosol Science
Background:
- Homogeneous nucleation models are crucial for predicting particle formation.
- Previous work established a model for liquid-phase nucleation.
- Gas-phase nucleation presents unique challenges due to different physical regimes.
Purpose of the Study:
- To extend the homogeneous nucleation model to gas-phase systems.
- To establish a relationship between particle characteristics and operating conditions in gas-phase nucleation.
- To validate the extended model with experimental data.
Main Methods:
- Developed a homogeneous nucleation model for gas-phase systems.
- Incorporated free molecular regime considerations for critical nuclei.
- Conducted experiments using dioctyl sebacate particles generated via evaporation-condensation.
Main Results:
- The extended model accurately predicts the number concentration and mean volume diameter of nucleated aerosol particles.
- Experimental results show excellent agreement with model predictions.
- Accounting for monomer and particle losses to system walls was crucial for accuracy.
Conclusions:
- The extended homogeneous nucleation model is effective for gas-phase systems.
- Gas-phase nucleation is influenced by higher diffusion velocities and critical supersaturation ratios compared to liquid phase.
- The model provides a valuable tool for understanding and controlling aerosol formation in various applications.
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