在Reline和Ethaline深度修养溶剂中溶解的H2S和CO的溶解体解剖学
Akshay Malik1, Hemant K Kashyap1
1Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
The journal of physical chemistry. B
|November 20, 2023
概括
深度环氧溶剂通过形成特定的溶解结构,有效捕获硫化 (H2S) 和一氧化碳 (CO). 气体分子和溶剂成分 (如尿素和乙烯基醇) 之间的相互作用是这种捕获过程的关键.
科学领域:
- 环境化学环境化学
- 计算化学计算化学
- 材料科学 材料科学 材料科学
背景情况:
- 硫化 (H2S) 和一氧化碳 (CO) 的工业排放量不断增加,需要先进的捕获技术.
- 深度浸泡溶剂 (DES) 是减轻H2S和CO污染的有希望的替代品.
研究的目的:
- 研究调控在reline和ethaline DESs中的H2S和CO捕获的分子级相互作用.
- 为了阐明溶解内的结构安排,以促进气体吸收.
主要方法:
- 使用ab initio分子动力学模拟来模型H2S和CO溶于reline和ethalineDESs.
- 分析了近邻溶解结构和分子间相互作用.
主要成果:
- 确定了特定的相互作用:化物和尿素碳基氧与H2S在reline;化物和乙烯基醇与H2S在乙醇.
- 在两种DES中观察到H2S通过胆的基团溶解.
- 确定尿素和化物在reline中主导CO溶解,而乙烯基醇在乙醇中主导.
- 与CO相比,在DES和H2S之间发现了更强的电荷转移相互作用.
结论:
- 在reline和ethaline DES中,特定的溶解结构对于高效的H2S和CO捕获至关重要.
- 了解这些相互作用为设计改进的气体捕获材料提供了洞察力.
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