Chemically Dual-Site Capture of NH3 by Unprecedently Low-Viscous Deep Eutectic Solvents

It is unprecedently found that ethylamine hydrochloride (EaCl) and phenol (PhOH) can form a new type of deep eutectic solvents (DESs) with quite low viscosities. The strong hydron-bond donating ability of EaCl and PhOH provides two active sites for robust interaction with NH3. Thus, the capacities of EaCl+PhOH DESs for NH3 absorption are considerably high even at low pressures.