Carbon Dioxide Solubility in Nonionic Deep Eutectic Solvents Containing Phenolic Alcohols

Ahmad Alhadid, Javid Safarov, Liudmila Mokrushina, Karsten Müller, Mirjana Minceva

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Deep eutectic solvents (DES) are a new class of green solvents that have shown unique properties in several process applications. This study evaluates nonionic DES containing phenolic alcohols as solvents for carbon dioxide (CO2) capture applications. Potential phenolic alcohols and the molar ratio between DES constituents were preselected for experimental investigations based on the conductor-like screening model for realistic solvation (COSMO-RS). CO2 solubility was experimentally determined in two different DES, namely, L-menthol/thymol in 1:2 molar ratio and thymol/2,6-xylenol in 1:1 molar ratio, at various temperatures and pressures. CO2 solubility in the studied systems was higher than that reported in the literature for ionic DES and ionic liquids. This study demonstrates that nonionic DES containing phenolic alcohols can be excellent, inexpensive, and simple solvents for CO2 capture.

Original languageEnglish
Article number864663
JournalFrontiers in Chemistry
Volume10
DOIs
StatePublished - 22 Mar 2022

Keywords

  • CO capture
  • COSMO-RS
  • green solvents
  • hydrophobic deep eutectic solvents
  • ionic liquids

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