Colas, beers and sparkling wines are all concentrated solutions of carbon dioxide in aqueous solvents. Any such carbonated liquid is ordinarily conditioned inside a closed bottle or a metal can as a liquid-gas 2-phase system. At thermodynamic equilibrium, the partial pressure of carbon-dioxide in the gas phase and its concentration in the liquid are proportional (Henry's law). In practical conditions and use (transport, opening of the container, exterior temperature change, etc.), Henry's equilibrium can be perturbed. The goal of this paper is to describe and understand how the system responds to such perturbations and evolves towards a new equilibrium state. Formally, we investigate the dynamics around Henry's equilibrium of a closed system, through dedicated experiments and modeling. We focus on the response to a sudden pressure change and to mechanical shaking (the latter point inspired the article's title). Observations are rationalized through basic considerations including molecular diffusion, bubble dynamics (based on Epstein-Plesset theory) and chemi-convective hydrodynamic instabilities.
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http://dx.doi.org/10.1016/j.jcis.2014.10.008 | DOI Listing |
J Chem Phys
October 2024
Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, USA.
Chemical reactions and vapor-liquid equilibria for molten lithium hydroxide (LiOH) were studied using molecular dynamics simulations and a deep potential (DP) model. The neural network for the model was trained on quantum density functional theory data for a range of conditions. The DP model allows simulations over timescales of hundreds of ns, which provide equilibrium compositions for the systems of interest.
View Article and Find Full Text PDFChempluschem
January 2025
Chemical Engineering Department, University of Louisville, 216 Eastern Pkwy, Louisville, KY, 40208, USA.
Henry's law describes the vapor-liquid equilibrium for dilute gases dissolved in a liquid solvent phase. Descriptions of vapor-liquid equilibrium allow the design of improved separations in the food and beverage industry. The consumer experience of taste and odor are greatly affected by the liquid and vapor phase behavior of organic compounds.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
August 2024
Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand.
In this study, the high potential tertiary N-methyl-4-piperidinol or MPDL (0.25-1.00 M) was blended with 5 M monoethanolamine (MEA) to formulate 5.
View Article and Find Full Text PDFJ Chem Eng Data
June 2024
National Renewable Energy Laboratory (NREL), 15013 Denver West Parkway, Golden, Colorado 80401, United States.
During Li-ion battery operation, (electro)chemical side reactions occur within the cell that can promote or degrade performance. These complex reactions produce byproducts in the solid, liquid, and gas phases. Studying byproducts in these three phases can help optimize battery lifetimes.
View Article and Find Full Text PDFSci Rep
June 2024
Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, TN, 37831-6368, USA.
Henry's law constant, which describes the proportionality of dissolved gas to partial pressure of free gas in liquid-gas equilibrium systems, can also be applied to mass transport applications. In this work, we investigated an approach for determining the solubility of noble gases in a molten salt liquid utilizing the equilibrium concept of Henry's gas constant. Henry's gas constant is described as a mathematical function dependent on the van der Waals radius of the noble gas and the temperature of the molten salt.
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