通过酸性离子液体从变压器油中提取二二硫化物
Lili Zhang1, Pei Peng1, Qian Pan1
1Hubei Key Laboratory of Drug Synthesis and Optimization, Jingchu University of Technology, Jingmen 448000, China.
Molecules (Basel, Switzerland)
|May 25, 2024
概括
变压器油中的二二硫化物 (DBDS) 会导致故障. 九种离子液体 (IL) 进行了DBDS去除测试,其中[BMIM]FeCl4显示出卓越的效率和可回收性.
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
- 环境科学 环境科学
背景情况:
- 变压器油中的二二硫化物 (DBDS) 是全球变压器故障的重要原因.
- 从变压器油中有效地去除DBDS对于防止设备故障和确保电网稳定性至关重要.
- 离子液体 (ILs) 具有作为硫化合物的绿色和高效提取剂的潜力.
研究的目的:
- 研究九种基于伊米达的离子液 (ILs) 作为新型提取剂的有效性,用于从变压器油中去除二二硫化物 (DBDS).
- 确定最有效的IL用于DBDS删除,并了解影响其性能的因素.
- 评估用于变压器油脱硫的最佳IL的可回收性和潜在的工业适用性.
主要方法:
- 对九种基于伊米达的离子液体进行选,以检测它们在变压器油中对DBDS的脱硫能力.
- 使用分区系数 (K(S)) 测量,量化DBDS去除效率.
- 研究FeCl3摩尔比对[BMIM]FeCl4.4的提取性能的影响.
- 在模型油中评估[BMIM]FeCl4对二硫化物 (DPS) 的脱硫能力.
- 分析潜在的相互作用机制 (π-π作用,π-复杂化,易斯酸相互作用).
- 在多个循环中评估[BMIM]FeCl4离子液体的可回收性.
主要成果:
- 测试ILs的脱硫能力遵循一个特定的顺序,其中[BMIM]FeCl4表现出最高的效率.
- [BMIM]FeCl4表现出高达2642的高S分割系数 (K(S)) ,显著超过其他ILs.
- [BMIM]FeCl4的提取性能通过增加FeCl3与[BMIM]Cl的摩尔比率来提高,这归因于其易斯酸性和流动性.
- [BMIM]FeCl4还有效地从模型油中去除二硫化物 (DPS).
- 包括π-π作用,π-复杂化和易斯酸相互作用在内的关键相互作用被确定为脱硫过程的关键.
- [BMIM]FeCl4在五个回收循环后保持了显著的提取能力.
结论:
- 基于伊米达的离子液体,特别是[BMIM]FeCl4,是从变压器油中去除二二硫化物的高效和绿色提取剂.
- [BMIM]FeCl4的优越性能与其易斯酸度,流动性以及参与特定分子相互作用的能力有关.
- [BMIM]FeCl4由于其高效率,对其他硫化合物如DPS的广泛适用性以及出色的可回收性,因此对工业应用具有前景.
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