A study of porous support amine-RTILs binary system for CO2 capture

Min Xiao, Helei Liu*, Raphael Idem, Paitoon Tontiwachwuthikul, Zhiwu Liang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this work, room temperature ionic liquids (RTILs) 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM]BF4) and 1-butyl-3-ethylimidazolium tetrafluoroborate ([BEIM]BF4) are synthesized. The cation structure of ionic liquids is confirmed by NMR spectroscopy. The thermal decomposition temperature of synthesized ionic liquids is measured and both ionic liquids show good thermal stability. The viscosity of ionic liquids is determined over the temperature range of 298 K to 353 K. A mixed system made by blending amine and ionic liquid is proposed for CO2 capture. Investigation of the performance of this binary system on a porous support medium for CO2 absorption shows that amine is able to greatly intensify the ionic liquids' ability to absorb CO2. Furthermore, when blending tertiary amine and ionic liquids to absorb CO2, it was found that only physical absorption takes place and that the viscosity of the absorbent increases slightly after CO2 absorption. Based on the results of this work, the binary system of tertiary amine and RTILs is proven to be an alternative absorbent for CO2 capture.

Original languageEnglish
Title of host publicationEnvironmental Division 2016 - Core Programming Area at the 2016 AIChE Annual Meeting
PublisherAIChE
Pages328-334
Number of pages7
ISBN (Electronic)9781510834354
Publication statusPublished - 2016
Externally publishedYes
EventEnvironmental Division 2016 - Core Programming Area at the 2016 AIChE Annual Meeting - San Francisco, United States
Duration: 13 Nov 201618 Nov 2016

Publication series

NameEnvironmental Division 2016 - Core Programming Area at the 2016 AIChE Annual Meeting

Conference

ConferenceEnvironmental Division 2016 - Core Programming Area at the 2016 AIChE Annual Meeting
Country/TerritoryUnited States
CitySan Francisco
Period13/11/1618/11/16

Keywords

  • Amine-RTILs
  • CO capture
  • Low viscosity
  • Physical absorption

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