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Halometallate ionic liquids: thermal properties, decomposition pathways, and life cycle considerations

Clarke, Coby J.; Baaqel, Husain; Matthews, Richard P.; Chen, Yiyan; Lovelock, Kevin R.J.; Hallett, Jason P.; Licence, Peter


Coby J. Clarke

Husain Baaqel

Richard P. Matthews

Yiyan Chen

Kevin R.J. Lovelock

Jason P. Hallett


Halometallate ionic liquids provide new opportunities for industrial catalytic processes because of their unique blend of physical and chemical properties. Tunability underpins the success of ionic liquids because small structural changes can have drastic effects on either property. Catalysis can be optimised by adjusting structures to target properties such as Lewis basicity and acidity, but the structural changes have simultaneous impacts on physical properties. In this work, we provide a thorough, methodical, and reliable list of thermal parameters to help define temperature limits to prevent catalyst poisoning and limit the need to replace costly and environmentally demanding solvents. Mechanistic insights show that decomposition is particularly detrimental for halometallate ionic liquids, and life cycle analysis highlights that lower levels of organic cations are better for economic and environmental sustainability.


Clarke, C. J., Baaqel, H., Matthews, R. P., Chen, Y., Lovelock, K. R., Hallett, J. P., & Licence, P. (2022). Halometallate ionic liquids: thermal properties, decomposition pathways, and life cycle considerations. Green Chemistry, 24(15), 5800-5812.

Journal Article Type Article
Acceptance Date Jul 6, 2022
Online Publication Date Jul 7, 2022
Publication Date Jul 7, 2022
Deposit Date Sep 26, 2022
Publicly Available Date Sep 28, 2022
Journal Green Chemistry
Print ISSN 1463-9262
Electronic ISSN 1463-9270
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 24
Issue 15
Pages 5800-5812
Keywords Pollution; Environmental Chemistry
Public URL
Publisher URL


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