Cu交换的基酸诱导了溶剂作用,以增强与H2O2的烯环氧化
Xiaojing Song1, Shuang Liu1, Jing Wang2
1School of Chemical and Environmental Engineering, Liaoning University of Technology, Jinzhou, 121001, China. 1227519466@qq.com.
Dalton transactions (Cambridge, England : 2003)
|February 12, 2026
概括
在多孔有机聚合物 (CuPMA/POPs) 上用铜替代的基酸增强了烯环氧化. 这种利用过氧化的催化剂显示出改进的转化和选择性,由协同的Cu替代和溶剂效应驱动.
科学领域:
- 催化剂是一种催化剂.
- 材料科学 材料科学 材料科学
- 有机化学 有机化学
背景情况:
- 烯环氧化是有机合成中至关重要的转化.
- 传统方法经常面临选择性和催化剂稳定性的挑战.
- 开发高效和可回收的环氧化催化剂仍然是一个活跃的研究领域.
研究的目的:
- 开发一种新的催化剂,用于使用过氧化增强溶剂介导的烯环氧化.
- 研究在多孔有机聚合物 (CuPMA/POPs) 上的基酸中的铜替代作用.
- 阐明改善催化性能和溶剂效应背后的机制.
主要方法:
- 三烯胺功能化的多孔有机聚合物 (POP) 的合成.
- 用铜替代的基酸 (CuPMA) 固定在POP上.
- 使用各种分析技术对CuPMA/POPs催化剂的表征.
- 用H2O2.2测试烯环氧化反应中的催化活性和选择性.
主要成果:
- 与未经修改的PMA/POPs相比,CuPMA/POPs显著增强了催化活性和环氧选择性.
- 在1,4-二氧化中,环氧烯转化率达到90%,具有很高的环氧选择性.
- 鉴定结果显示,Cu的加入调节了PMA的电子结构,产生了活性Cu-OOH和Mo-OOH中间体.
- 观察到Cu替代和1,4-二氧化/H2O2的结网之间的协同效应,提高了反应效率.
结论:
- CuPMA/POPs 作为一种有效且稳定的催化剂,用于溶剂介导的烯环氧化.
- 增强的性能归因于通过Cu替代和有利的溶剂效应来调节活性物种.
- 催化剂的可回收性突显了可持续催化剂应用的潜力.
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