AI Article Synopsis
- The solubility of carbon dioxide in different solvents has been studied, primarily looking at how it interacts through dispersion forces.
- The Hildebrand solubility parameter (δ) is a key concept for predicting CO2 dissolution, although its traditional definition is not directly applicable since CO2 is a gas at relevant temperatures.
- The study also addresses discrepancies in reported values for δ(CO2) and explores the use of Hansen solubility parameters and supercritical carbon dioxide as a solvent.
Article Abstract
The solubility of gaseous carbon dioxide in a variety of solvents has been extensively studied, the solute interacting with most solvents via dispersion forces. Hence, its Hildebrand solubility parameter, δ, may be used to predict its dissolution in liquids. The usual definition of δ involves Δ , the molar enthalpy of vaporization, strictly applicable to liquids. This expression is inapplicable for carbon dioxide, being a gas at the temperatures of technical interest (298 ≤ /K ≤ 333), and various indirect methods have been employed for the determination of δ(CO,). The appreciable polarizability of CO and its ability to accept hydrogen bonds from suitable donor solvents prompted the determination of its Hansen solubility parameters. Finally, supercritical carbon dioxide has been extensively used as a solvent so that its δ(scCO,,) is a useful quantity to know. The large discrepancies between the reported quantities for δ(CO,) are analyzed and discussed.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6641463 | PMC |
| http://dx.doi.org/10.1021/acsomega.7b01665 | DOI Listing |
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