Efficient and reversible separation of NH<sub>3</sub> by deep eutectic solvents with multiple active sites and low viscosities

Jiayin Zhang; Lu Zheng; Siqi Fang; Hongwei Zhang; Zhenping Cai; Kuan Huang; Lilong Jiang

doi:10.1016/j.cjche.2023.10.012

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Efficient and reversible separation of NH₃ by deep eutectic solvents with multiple active sites and low viscosities

Updated：2026-01-06

- Efficient and reversible separation of NH₃ by deep eutectic solvents with multiple active sites and low viscosities
- Chinese Journal of Chemical Engineering Vol. 67, Issue 3, Pages: 97-105(2024)
- Affiliations：
  
  1. National Engineering Research Center of Chemical Fertilizer Catalyst (NERC-CFC), College of Chemical Engineering, Fuzhou University,Fuzhou,China,350002
  2. Qingyuan Innovation Laboratory,Quanzhou,China,362801
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2023.10.012
  CLC：
- Published：2024
- Accepted：
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by deep eutectic solvents with multiple active sites and low viscosities[J]. 中国化学工程学报, 2024, 67(3): 97-105.
DOI：

by deep eutectic solvents with multiple active sites and low viscosities[J]. 中国化学工程学报, 2024, 67(3): 97-105. DOI： 10.1016/j.cjche.2023.10.012.

摘要

Abstract

The efficient separation and collection of ammonia (NH

) during NH

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

separation performance of EtOHACl + PhOH DESs was analyzed completely. It is figured out that the NH

absorption rates in EtOHACl + PhOH DESs are very fast. The NH

absorption capacities are very high and reach up to 5.52 and 10.74 mol·kg

-1

at 11.2 and 100.4 kPa under 298.2 K

respectively. In addition

the EtOHACl + PhOH DESs present highly selective absorption of NH

over N

and H

and good regenerative properties after seven cycles of absorption/desorption. The intrinsic separation mechanism of NH

by EtOHACl + PhOH DESs was further revealed by spectroscopic analysis and quantum chemistry calculations.

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Related Institution

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⁰

Efficient and reversible separation of NH3 by deep eutectic solvents with multiple active sites and low viscosities

DOI：10.1016/j.cjche.2023.10.012

摘要

Abstract

关键词

Keywords

references

Efficient and reversible separation of NH₃ by deep eutectic solvents with multiple active sites and low viscosities