通过Zr(IV) 激活三甲基氧化物,通过多氧化态支架稳定
Irina D Ivanchikova1, Nataliya V Maksimchuk1, Sofia M Marikovskaya1
1Boreskov Institute of Catalysis, Pr. Lavrentieva 5, Novosibirsk, 630090, Russia.
聚氧甲酸盐 (Zr-POMs) 有效地激活三丁氧化 (TBHP) 用于烯环氧化和酒精氧化. Zr-POM 具有很高的选择性和活性,性能优于类型,并提供更绿色的催化方法.
科学领域:
- 无机化学 无机化学
- 催化剂是一种催化剂.
- 绿色化学 绿色化学
背景情况:
- 聚氧甲酸盐 (POMs) 是具有可调节性质的多功能无机集群.
- 氧化剂的激活,如三丁氧化 (TBHP) 对于选择性氧化反应至关重要.
- 开发高效和选择性催化剂用于环氧化和酒精氧化是有机合成的一个关键目标.
研究的目的:
- 在氧化反应中研究替代聚氧甲酸盐 (Zr-POMs) 的催化活性.
- 为了比较Zr-POM与其对应物 (Ti-POM) 的性能.
- 阐明Zr-POMs的TBHP激活和氧气转移的机制.
主要方法:
- 基金,林德奎斯特和威尔斯-道森型Zr-POMs的合成和表征.
- 使用TBHP进行基因氧化和酒精氧化的催化试验.
- 动力学研究和光谱分析 (HR-ESI-MS,ATR-FT-IR,31P NMR) 用于识别活动物种.
主要成果:
- Zr-POMs有效地催化了使用TBHP的环氧化和酒精氧化,产量高于Ti-POMs.
- Zr-POMs具有很高的选择性,并且不会促进非生产性的TBHP降解.
- 谱学研究表明,基基类物种可以作为活性中间体形成.
结论:
- Zr-POMs是TBHP选择性氧化反应的高效催化剂.
- 催化活性归因于甲基氧介质的形成.
- Zr-POMs为更绿色的氧化过程提供了一个有希望的替代方案.
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