脯氨酸-丙三醇低共熔溶剂脱硝性能与机理研究

朱志伟; 曹志明; 李悦颖; 陈星星; 窦金孝; 余江龙

doi:10.12434/j.issn.2097-2547.20250291

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脯氨酸-丙三醇低共熔溶剂脱硝性能与机理研究

更新时间：2026-02-12

- 脯氨酸-丙三醇低共熔溶剂脱硝性能与机理研究
- Study of denitrification performance and mechanism of proline-glycerol deep eutectic solvent
- 低碳化学与化工 2026: 1-9.
- 作者机构：
  
  辽宁科技大学化学工程学院辽宁省先进煤焦化重点实验室，辽宁鞍山 114051
- 作者简介：
  
  朱志伟（2001—），硕士研究生，研究方向为气体污染物净化，E-mail：2539462736@qq.com。
  窦金孝（1986—），博士，副教授，研究方向为煤与生物质清洁利用、气体污染物净化，E-mail：doujx123@163.com。
- 基金信息：
  
  国家自然科学基金(22378180);辽宁省教育厅面上项目揭榜挂帅服务地方项目(JYTMS20230960)
- DOI：10.12434/j.issn.2097-2547.20250291
  中图分类号： TQ424
- 收稿：2025-07-04，
  
  修回：2025-08-19，
  
  网络首发：2026-02-10，
- 稿件说明：
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朱志伟,曹志明,李悦颖等.脯氨酸-丙三醇低共熔溶剂脱硝性能与机理研究[J].低碳化学与化工,

ZHU Zhiwei,CAO Zhiming,LI Yueying,et al.Study of denitrification performance and mechanism of proline-glycerol deep eutectic solvent[J].Low-Carbon Chemistry and Chemical Engineering,
朱志伟,曹志明,李悦颖等.脯氨酸-丙三醇低共熔溶剂脱硝性能与机理研究[J].低碳化学与化工, DOI：10.12434/j.issn.2097-2547.20250291.

ZHU Zhiwei,CAO Zhiming,LI Yueying,et al.Study of denitrification performance and mechanism of proline-glycerol deep eutectic solvent[J].Low-Carbon Chemistry and Chemical Engineering, DOI：10.12434/j.issn.2097-2547.20250291.

摘要

低共熔溶剂（DESs）被广泛应用于气体净化和化工分离等领域。以脯氨酸（Pro）为氢键受体、丙三醇（Gly）为氢键供体，采用一步合成法制备了Pro-Gly低共熔溶剂（Pro-Gly DES）。考察了

(Pro):

(Gly)、温度和气体组分等因素对Pro-Gly DES脱硝性能的影响；并利用FT-IR、

H-NMR和量子化学计算等手段探究其中机理。结果表明，在

(Pro):

(Gly) = 1:4、温度为303 K和气体流速为50 mL/min的条件下，Pro-Gly DES对NO的吸收性能最佳，吸收量达0.311 g/g。循环使用10次后，Pro-Gly DES吸收性能有所减弱，但吸收量仍达0.303 g/g。303 K时，Pro-Gly DES吸收NO后，其黏度由6300 mPa·s减小至230 mPa·s，黏度减小可促进气液传质。热力学分析表明，Pro-Gly DES吸收NO过程焓变和熵变分别为-46.23 kJ/mol和-122.29 J/(mol·K)，吉布斯自由能变为-6.35 kJ/mol（303 K）。Pro-Gl

y DES中—NH—基团是主要活性位点，可与NO形成稳定的—N==O结构，其吸收NO后黏度减小传质加快，促进了NO扩散，从而提高了NO吸附量。Pro-Gly DES具有绿色低毒和可再生性能强等优势，在NO捕集中展示出应用潜力。

Abstract

Deep eutectic solvents (DESs) have been widely applied in gas purification

chemical separation and related fields. A proline-glycerol deep eutectic solvent (Pro-Gly DES) was prepared via a one-step synthesis method using proline (Pro) as the hydrogen bond acceptor and glycerol (Gly) as the hydrogen bond donor. The effects of

(Pro):

(Gly)

temperature and gas composition on the denitration performance of Pro-Gly DES were investigated. FT-IR

H-NMR and quantum chemical calculation were employed to explore the absorption mechanism. The results show that the Pro-Gly DES exhibits optimal NO absorption performance at

(Pro):

(Gly) of 1:4

temperature of 303 K

and gas flow rate of 50 mL/min

with absorption capacity of 0.311 g/g. After 10 absorption-desorption cycles

the absorption performance of Pro-Gly DES decreases slightly

while the absorption capacity remains at 0.303 g/g. At 303 K

after NO absorption

the viscosity of Pro-Gly DES decreases from 6300 mPa·s to 230 mPa·s

and the reduced viscosity promotes gas-liquid mass transfer. Thermodynamic analysis indicates that the enthalpy change and entropy change of NO absorption by Pro-Gly DES are -46.23 kJ/mol and -122.29 J/(mol·K)

respectively

and the Gibbs free energy change at 303 K is -6.35 kJ/mol. The —NH— group in Pro-Gly DES is identified as the main active site

which can form a stable —N==O structure with NO. The decrease in viscosity after NO absorption accelerates mass transfer and promotes NO diffusion

thereby enhancing the NO adsorption capacity. Owing to its green

low-toxicity and highly renewable characteristics

Pro-Gly DES demonstrates promising potential for NO capture.

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