揭示了双酸联体增强的可持续去除从消耗的SCR脱催化剂的作用
Juan Meng1, Zhihan Tong2, Hongyu Zhang1
1School of Resources and Environmental Engineering, Key Laboratory of precious metal deep processing technology and application of Jiangsu Province, Jiangsu University of Technology, Changzhou 213001, China.
Journal of hazardous materials
|December 17, 2025
概括
这项研究提出了一种环保的方法,可以使用水合性深层性溶剂从废弃的SCR催化剂中去除有毒. 再生的催化剂有效地减少了氧化,推进了可持续能源技术.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
背景情况:
- 选择性催化减排 (SCR) 对于减少燃煤发电厂的氧化 (NOx) 排放至关重要.
- (As) 在SCR催化剂中的积累大大降低了它们的效率,并造成环境风险.
- 开发有效的方法来从废弃的催化剂中去除对于可持续的能源生产和催化剂回收利用至关重要.
研究的目的:
- 开发一种新且环保的方法,从已使用的V2O5-WO3/TiO2 SCR脱催化剂中去除.
- 通过使用水合性深层欧特溶剂 (HDESs) 调查提取的机制.
- 评估再生催化剂的性能和结构完整性.
主要方法:
- 用密度功能理论 (DFT) 的计算来理解水和乙醇胺 (Etae) 在提取中的作用.
- 使用不同含水量的HDES配方进行了去除实验.
- 通过先进的表征技术和性能测试,分析了再生催化剂的结构和活性.
主要成果:
- 一种含有90%水的水性性深度环氧化溶剂配方实现了出色的97.1%的去除率.
- 该过程保持了TiO2支的结构完整性.
- 再生后的催化剂表现出高的氧化转化效率 (93.2%在300°C).
结论:
- 化性深溶剂提供了一种有效的绿色解决方案,用于从已耗尽的SCR催化剂中去除.
- 在HDES中的乙胺作为双酸连接体,促进稳定的复合体形成和高效的提取.
- 这项研究通过改进的催化剂回收和再生策略,有助于推进可持续能源技术.
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