An electrochemical setup designed for carbon dioxide solubility measurements in ionic liquids.

Autor: Bruzon DAV; Institute of Chemistry, University of the Philippines-Diliman, Quezon City 1101, Philippines., Tapang GA; National Institute of Physics, University of the Philippines-Diliman, Quezon City 1101, Philippines., Martinez IS; Institute of Chemistry, University of the Philippines-Diliman, Quezon City 1101, Philippines.
Jazyk: angličtina
Zdroj: The Review of scientific instruments [Rev Sci Instrum] 2021 Feb 01; Vol. 92 (2), pp. 024102.
DOI: 10.1063/5.0019479
Abstrakt: An electrochemical setup was designed and built to evaluate carbon dioxide solubility in ionic liquids. The setup can simultaneously measure amounts of CO 2 in the gas and in the ionic liquid phase, making it very useful for in situ electrochemical measurements. The home-built glass cell is able to withstand high vacuum allowing the ionic liquid samples to be properly evacuated before characterization and kept free of contaminants during experiments. A pressure gauge attached to the setup enables continuous monitoring of gas added to the system. This kind of configuration can measure gas solubility in ionic liquids expressed as Henry's constants determined from generated plots of dissolved gas concentration in the ionic liquid vs headspace gas pressure. It also serves as a more economical alternative to other gas solubility measurement techniques, as it is predominantly made of glass, and requires minimal sample amounts. The setup can be useful in determining the solubility of various gases in ionic liquids.
Databáze: MEDLINE
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