Mixing cations with different alkyl chain lengths markedly depresses the melting point in deep eutectic solvents formed from alkylammonium bromide salts and urea.
The melting point of a deep eutectic solvent formed from a ternary mixture of ethylammonium bromide (EABr), butylammonium bromide (BABr) and urea is 10 °C, which is almost 40 °C lower than the melting points of binary DESs formed from either EABr:urea or BABr:urea mixtures. This reveals a new route to prepare room temperature DESs via mixing different cations.
Priority Research Centre for Advanced Fluids and Interfaces, Newcastle Institute for Energy and Resources, The University of Newcastle, Callaghan, NSW 2308, Australia. rob.atkin@newcastle.edu.au.
Zhengfei
http://orcid.org/0000-0002-8747-3606
Z
Chen
School of Science, College of Science, Engineering and Health, RMIT University, GPO Box 2476, Melbourne, Victoria 3001, Australia.
Tamar L
TL
Greaves
School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia.
Gregory G
http://orcid.org/0000-0002-6893-1253
GG
Warr
Priority Research Centre for Advanced Fluids and Interfaces, Newcastle Institute for Energy and Resources, The University of Newcastle, Callaghan, NSW 2308, Australia. rob.atkin@newcastle.edu.au.
Rob
http://orcid.org/0000-0001-8781-7854
R
Atkin