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Ligand-Mediated Nucleation and Growth of Palladium Metal Nanoparticles
Published on: June 25, 2018
10.8K
Multicomponent condensation on the nucleation stage.
Anatoly E Kuchma1, Alexander K Shchekin1
1St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia.
The Journal of Chemical Physics
|February 10, 2019
Summary
This study analyzes supercritical droplet evolution during vapor condensation. It extends mean-field theory to model multicomponent nucleation and droplet growth in a closed system.
Area of Science:
- Physical Chemistry
- Chemical Engineering
- Thermodynamics
Background:
- Droplet formation and growth are critical in atmospheric and industrial processes.
- Previous work focused on single-component systems or gas bubble nucleation.
- Understanding multicomponent nucleation requires advanced theoretical models.
Purpose of the Study:
- To extend existing mean-field theory to model multicomponent nucleation and droplet growth.
- To analyze the evolution of supercritical droplets in a closed system with multiple condensing vapors.
- To determine vapor supersaturations and droplet size distributions over time.
Main Methods:
- Extension of mean-field theory for nucleation stage.
- Modeling of multicomponent nucleation and droplet growth under isothermal conditions.
- Analysis of a closed system with a fixed amount of condensing species.
Main Results:
- A theoretical approach was developed to predict vapor supersaturations.
- The distribution of supercritical droplet sizes as a function of time was determined.
- The model was illustrated using an ideal multicomponent solution.
Conclusions:
- The extended mean-field theory accurately describes multicomponent droplet nucleation and growth.
- The proposed approach provides insights into the dynamics of droplet ensembles.
- This work advances the understanding of phase transitions in multicomponent systems.
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