Efficient and reversible separation of NH_(3) by deep eutectic solvents with multiple active sites and low viscosities  

作　　者：Jiayin Zhang Lu Zheng Siqi Fang Hongwei Zhang Zhenping Cai Kuan Huang Lilong Jiang 

机构地区：[1]National Engineering Research Center of Chemical Fertilizer Catalyst(NERC-CFC),College of Chemical Engineering,Fuzhou University,Fuzhou 350002,China [2]Qingyuan Innovation Laboratory,Quanzhou 362801,China

出　　处：《Chinese Journal of Chemical Engineering》2024年第3期97-105,共9页中国化学工程学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(22221005 and 22008033).

摘　　要：The efficient separation and collection of ammonia(NH_(3))during NH_(3) synthesis process is essential to improve the economic efficiency and protect the environment.In this work,ethanolammonium hydrochloride(EtOHACl)and phenol(PhOH)were used to prepare a novel class of deep eutectic solvents(DESs)with multiple active sites and low viscosities.The NH_(3) separation performance of EtOHACl+PhOH DESs was analyzed completely.It is figured out that the NH_(3) absorption rates in EtOHACl+PhOH DESs are very fast.The NH_(3) absorption capacities are very high and reach up to 5.52 and 10.74 mol·kg1 at 11.2 and 100.4 kPa under 298.2 K,respectively.In addition,the EtOHACl+PhOH DESs present highly selective absorption of NH_(3) over N_(2) and H_(2) and good regenerative properties after seven cycles of absorption/desorption.The intrinsic separation mechanism of NH_(3) by EtOHACl+PhOH DESs was further revealed by spectroscopic analysis and quantum chemistry calculations.

关 键 词：SEPARATION Absorption Ionic liquid Deep eutectic solvent Multiple active site Low viscosity 

分 类 号：TQ113.2[化学工程—无机化工]