Oligoamine ionic liquids supported on mesoporous microspheres for CO2 separation with good sorption kinetics and low cost

Ming Zhou, Santosh Govind Khokarale, Marco Balsamo, Jyri-Pekka Mikkola, Jonas Hedlund

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Abstract

Ionic liquids display good CO2 absorption capacity but poor absorption kinetics and high costs. In the present work, we show that these problems can be solved by impregnating the new low cost ionic liquid pentaethylenehexammonium chloride [PEHA][Cl] and the corresponding amine precursor on a low cost mesoporous microsphere support. Nitrogen adsorption/ desorption, high-resolution SEM and thermogravimetric analysis were employed to analyze the structural and thermal properties of the prepared sorbents. The CO2 adsorption and desorption performance was studied by column experiments and mathematical models were fitted to the data. The results showed that sorbents displayed excellent sorption kinetics and capacity, comparable to the best reports in the literature. In addition, the sorbents could be regenerated and displayed high thermal stability. Finally, the costs of the sorbents developed in the present work is much lower than previously reported sorbents. Therefore this novel supported IL system could be promising for industrial CO2 removal and recovery applications.
Original languageEnglish
Article number101186
JournalJournal of CO2 utilization
Volume39
DOIs
Publication statusPublished - Jul 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • Amines
  • Carbon dioxide
  • Gas separation
  • Ionic liquids
  • Kinetics

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