Comparison of liquid phase ion speciation in DEAB-CO2- H2O system with IPAB-CO2-H2O system using 13C NMR techniques

Bin Liu, Helei Liu, Zhiwu Liang*, Kaiyun Fu, Raphael Idem, Wichitpan Rongwong, Paitoon Tontiwachwuthikul

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

The 13C NMR techniques were selected to investigate the ion speciation in both DEAB and IPAB solvents. Calibration equations were established to quantify the exact ion concentration of free amines and protonated amines at different absorption times. The results show that the NMR method can be used to obtain both qualitative and quantitative information of the amine-CO2-H2O system. It is also the first time to monitor the components in the new solvent (IPAB) and establish its VLE model.

Original languageEnglish
Pages (from-to)1919-1926
Number of pages8
JournalEnergy Procedia
Volume63
DOIs
Publication statusPublished - 2014
Externally publishedYes
Event12th International Conference on Greenhouse Gas Control Technologies, GHGT 2014 - Austin, United States
Duration: 5 Oct 20149 Oct 2014

Keywords

  • Absorption
  • C NMR
  • Carbon dioxide
  • Quantification
  • Relaxation time

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