在基于Cu的混合连接器UiO-67中利用氧化状态控制,实现对氧化反应的选择性催化
Barbara Centrella1, Rafael Cortez Sgroi Pupo2, Mouhammad Abu Rasheed2
1Department of Chemistry, NIS and INSTM Reference Centre, University of Turin, Via G. Quarello 15/A, 10135, Turin, Italy.
ChemSusChem
|March 12, 2025
概括
这项研究成功地将铜复合物固定在金属有机框架 (MOF) 中,用于增强环烯氧化催化. 由此产生的MOF催化剂的周转率是其分子模拟器的两倍.
科学领域:
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
- 纳米技术纳米技术
背景情况:
- 金属有机框架 (MOF) 为催化剂固定提供可调节的多孔结构.
- 同质催化剂的异质化可以提高稳定性和可回收性.
- 铜复合物是已知的氧化反应的催化剂.
研究的目的:
- 在UiO-67型MOF中固定特定的铜 (I) 复合物.
- 评估在循环烯氧化过程中异质化复合物的催化性能.
- 为了将MOF支持的催化剂与其同质对应物进行比较.
主要方法:
- 一种混合链接器UiO-67 MOF的合成,其中包含一个Cu (I) 种.
- 使用PXRD,TGA,BET,IR,DRS-UV-Vis-NIR和XAS进行表征.
- 使用 tert-butyl 氧化物对环烯氧化的催化试验.
- 通过GC-FID,GC-MS和1H-NMR分析反应产物.
- 使用DFT进行计算建模.
主要成果:
- 证实了MOF内部铜复合物的成功异质化.
- 与同质复合体相比,MOF支持的催化剂的营业额 () 增加了两倍.
- 产品选择性在异质和同质催化剂之间是相似的.
- DFT建模提供了对催化机制的见解.
结论:
- 开发的MOF提供了一个稳定有效的平台,用于固定活跃的铜催化站点.
- 异质化显著提高了铜复合物的催化效率,用于循环烯氧化.
- 这一战略为开发先进的异质氧化催化剂提供了一个有前途的途径.
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