Vapor-liquid nucleation: the solid touch
Michal Yarom1, Abraham Marmur1
1Department of Chemical Engineering, Technion-Israel Institute of Technology, Haifa, Israel.
Advances in Colloid and Interface Science
|August 31, 2014
Summary
This review clarifies vapor-liquid nucleation, focusing on homogeneous and heterogeneous processes. It details nucleation concepts, thermodynamic principles, and the impact of surfaces and mixtures on phase formation.
Area of Science:
- Thermodynamics
- Physical Chemistry
- Materials Science
Background:
- Vapor-liquid nucleation is a fundamental process across many scientific fields.
- Existing literature often presents scattered case studies with unclear fundamental concepts, particularly for heterogeneous nucleation involving solid surfaces.
- A comprehensive thermodynamic discussion is needed to clarify these concepts.
Purpose of the Study:
- To provide a comprehensive thermodynamic discussion of homogeneous and heterogeneous nucleation in vapor-liquid systems.
- To clarify fundamental nucleation concepts, emphasizing chemical potential and providing intuitive explanations.
- To review nucleating systems, the influence of solid geometry, and mixing effects on vapor-liquid equilibrium.
Main Methods:
- Thermodynamic analysis of nucleation processes.
- Review of existing literature on homogeneous and heterogeneous nucleation.
- Discussion of chemical potential, solid geometry effects, and mixture thermodynamics.
Main Results:
- Detailed thermodynamic explanations of nucleation, including the role of chemical potential.
- Analysis of how solid surface geometry influences new phase formation.
- Consideration of vapor-liquid equilibrium shifts due to mixing and non-volatile solutes.
Conclusions:
- The review offers a clearer thermodynamic framework for understanding vapor-liquid nucleation.
- It highlights the critical role of surfaces and mixtures in nucleation phenomena.
- Identifies areas requiring further research for more precise and accurate presentations.
Related Concept Videos
Phase Transitions: Vaporization and Condensation
16.8K
The physical form of a substance changes on changing its temperature. For example, raising the temperature of a liquid causes the liquid to vaporize (convert into vapor). The process is called vaporization—a surface phenomenon. Vaporization occurs when the thermal motion of the molecules overcome the intermolecular forces, and the molecules (at the surface) escape into the gaseous state. When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase...
16.8K
Liquid–Solid Solutions
121
The process of a solid dissolving in a liquid to form a solution is governed by the solubility limit, which is the maximum amount of the solid substance, or solute, that can be dissolved in a specific volume of the liquid or solvent. As the solute dissolves, it reaches a point where no more solute can be dissolved at a given temperature - this is known as the saturation point. However, if further solute is added and it manages to dissolve, the solution becomes supersaturated. Supersaturated...
121
Vaporization
33.2K
The physical form of a substance changes by changing its temperature. For example, raising the temperature of a liquid causes the liquid to vaporize (convert into vapor). The process is called vaporization—a surface phenomenon. For vaporization to occur, kinetic energy must be greater than the intermolecular forces that keep molecules bonded. The amount of energy needed to vaporize a quantity of liquid at a given pressure and a constant temperature is called the heat of vaporization. When...
33.2K
Recrystallization: Solid–Solution Equilibria
4.1K
Recrystallization is a purification technique used to separate impurities from solid compounds. In this technique, no chemical reactions occur. Instead, it exploits physical properties only, specifically, the solubility differences between the desired compound and impurities, either at a single temperature or at different temperatures, and under other selected conditions. The solid-solution equilibrium (solubility equilibrium) of each component in the solution represents a binary phase...
4.1K
Distillation: Vapor–Liquid Equilibria
4.0K
Distillation is a separation technique that takes advantage of the boiling point properties of disparate elements in a mixture. To perform distillation, we begin by heating a miscible mixture of two liquids with a significant difference in boiling points (at least 20°C). As the solution heats up and reaches the bubble point of the more volatile component, some molecules of the more volatile component transition into the gas phase and travel upward into the condenser, which is a glass tube...
4.0K
Two Components: Liquid–Liquid Systems
167
A pressure-composition phase diagram explicitly describes the behavior of an ideal solution of two volatile liquids under varying pressures and compositions. A pressure-composition diagram has two main curves. The bubble point curve represents the plot of pressure versus liquid mole fraction. It indicates the pressure at which the first bubble of vapor forms from the liquid phase as the system pressure decreases.The dew point curve is the pressure versus vapor mole fraction. It indicates the...
167


