Ammonia (NH₃) is essential for nitrogen fertilizer and is also considered as a promising energy carrier recently. In considering the role of NH₃ for energy storage, the health and environmental risks from NH₃ emission must be minimized and efficiently eliminated. To this end, a wide range of materials such as metal halides, ionic liquids and porous materials have been examined for NH₃ absorption. Deep eutectic solvents (DESs) with unique properties and low cost are considered as potential solvents for absorbing NH₃. Herein, we report a DES composed of protic ethanolamine hydrochloride (EACl), weakly acidic resorcinol (Res) and neutral glycerol (Gly) can absorb 0.240 g NH₃/g DES for EACl/Res/Gly (1:4:5) at 293 K and 0.1 MPa, which is much higher than most of reported DESs. The absorption mechanism of NH₃ is hydrogen-bonding interaction from the results of NMR and FT-IR spectra. The ternary DESs EACl/Res/Gly have abundant hydrogen-bonding sites to absorb NH₃ without structural damage, in which EACl and Res play a major role in the interaction with NH_3, while Gly is helpful for structural stability during NH₃ absorption. Besides, DES EACl/Res/Gly (1:4:5) has good reversibility, excellent NH₃/CO₂ selectivity, is a potential NH₃ absorption and storage material for industrial application.

氨（NH ₃）是氮肥必不可少的成分，最近也被认为是有前途的能源载体。在考虑NH ₃在能量存储中的作用时，必须最小化并有效消除NH ₃排放对健康和环境的危害。为此，已经研究了多种材料例如金属卤化物，离子液体和多孔材料的NH ₃吸收。具有独特性能和低成本的深共熔溶剂（DES）被认为是吸收NH _3的潜在溶剂。本文中，我们报道了由质子乙醇胺盐酸盐（EACl），弱酸性间苯二酚（Res）和中性甘油（Gly）组成的DES可以吸收0.240 g NH ₃EACl / Res / Gly（1：4：5）在293 K和0.1 MPa时的/ g DES，远高于大多数已报道的DES。NMR和FT-IR光谱的结果表明，NH ₃的吸收机理是氢键相互作用。三元DES EACl / Res / Gly具有丰富的氢键结合位点，可吸收NH ₃而不破坏结构，其中EACl和Res在与NH ₃的相互作用中起主要作用_，而Gly有助于吸收NH _3时的结构稳定性。此外，DES EACl / Res / Gly（1：4：5）具有良好的可逆性，出色的NH ₃ / CO ₂选择性，是工业应用中潜在的NH ₃吸收和存储材料。