相关实验视频
Updated: Sep 16, 2025

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Ammonia Synthesis at Low Pressure
Published on: August 23, 2017
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合理设计具有低粘度和多个活性位点的深层环氧溶剂,以有效识别和选择性捕获NH3
Lu Zheng1, Saisai Ju1, Siqi Fang1
1National Engineering Research Center of Chemical Fertilizer Catalyst (NERC-CFC) College of Chemical Engineering Fuzhou University Fuzhou Fujian China.
Smart molecules : open access
|July 8, 2025
概括
由甘油酸和制成的新型深度浸泡溶剂 (DES) 有效地捕获氨 (NH3). 这些DES提供了快速吸收,高容量和稳定性,有助于合成氨行业并减少空气污染.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
- 环境化学环境化学
背景情况:
- 高效的氨 (NH3) 捕获对于合成氨行业和空气污染控制至关重要.
- 由于其可调节的特性,深度欧特克溶剂 (DES) 正在成为气体吸收的有希望的材料.
研究的目的:
- 设计和研究基于糖醇酸 (GA) 和 (PhOH) 的新型深度浸泡溶剂 (DES),以有效和选择性捕获氨.
- 在吸收率,容量,稳定性和选择性方面评估这些DES的性能.
主要方法:
- 由葡萄糖酸和组成的DES的合理设计.
- 试验测量氨的吸收动力学和平衡.
- 在暴露于空气和重复的吸收-脱吸周期下评估DES的稳定性.
- 使用气体混合物 (NH3/CO2/N2和NH3/N2/H2) 的选择性捕获实验.
- 谱学 (1H-NMR,FTIR) 和理论计算以阐明捕获机制.
主要成果:
- GA+PhOH DESs表现出快速的氨吸收,在51秒内达到平衡.
- 实现了高氨溶解度,容量在10.7 kPa时达到6.75 mol/kg,在201.0 kPa时达到14.72 mol/kg (1:1 GA+PhOH在313.2 K).
- 经过100天暴露在空气中,DES表现出极好的稳定性,氨溶性的变化最小,在10个吸附-脱落周期中具有很高的稳定性.
- 成功地证明了从NH3/CO2/N2和NH3/N2/H2混合物中选择性捕获氨.
结论:
- 基于甘油酸和的DES对于快速和选择性吸收氨非常有效.
- 这些DES在容量,稳定性和选择性方面具有显著的优势,使其适用于工业应用.
- 该研究提供了对这些新型DESs氨识别机制的见解.
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