The Study on Ionic Liquids Oil-in-Water Emulsion Enhancing Carbon Dioxide Absorption

Abstract:

The purpose of this paper is to investigate the effects of ionic liquids (ILs) oil-in-water emulsion on CO₂ absorption. 1-octyl-3-methylimidazolium hexafluorophosphate as ILs was dispersed into water forming oil-in-water emulsion to absorb carbon dioxide. Effects of dispersed phase volume fraction, droplet size, and the regeneration of dispersion were studied. Experimental results indicate that ILs oil-in-water emulsion can enhance the CO₂ absorption rate under lower dispersion phase volume fraction, and the CO₂ mass transfer rate increases with dispersion phase volume fraction. The smaller droplet size can help droplet go into the boundary layer to load CO₂ so as to increase the CO₂ mass transfer rate. ILs emulsion can be regenerated, but their enhancement effect becomes weaken with the increase of regeneration times.

• Periodical: Advanced Materials Research (Volumes 455-456)
• Pages: 991-997
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.455-456.991
• Online since: January 2012
• Authors: Hong Jing Liu, Ying Zhang, Hui Yao, Wei Zhao, Hong Jing Liu
• Keywords: Absorption, Carbon Dioxide CO₂, Emulsion, Gas-Liquid Interface, Ionic Liquid (IL)

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