在Ru-和Mo-碳支持催化剂上对生物来源的初级酒精进行选择性多相辅助氧化
Chiara Bersani1, Daily Rodríguez-Padrón1, Daniel Ballesteros2
1Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, Via Torino 155, 30175 Venezia Mestre, Venice, Italy.
ChemSusChem
|July 30, 2024
概括
这项研究表明,使用多相系统与疏水性离子离子液体和异质催化剂,将醇氧化为化的有效氧化. 该过程实现了高选择性,并允许催化剂回收利用.
科学领域:
- 绿色化学 绿色化学
- 催化剂是一种催化剂.
- 有机合成 有机合成
背景情况:
- 生物基基类酒精是有价值的化学中间体.
- 有效和选择性的氧化方法对于它们的转化为化物至关重要.
- 传统的氧化方法经常面临选择性和催化剂恢复方面的挑战.
研究的目的:
- 为生物基醇开发一种新的多相氧化系统.
- 在这个系统中研究异质催化剂 (Mo/C,Ru/C) 的使用.
- 为了实现对化物的高选择性,并使催化剂循环利用.
主要方法:
- 使用了三相液体系统:水,异酸和一种疏水离子离子液体 (甲基三甲化物).
- 使用的异质催化剂:临时合成的碳支持 (Mo/C) 或在碳上商用5%的 (Ru/C).
- 在不同温度和时间条件下使用空气作为氧化剂进行氧化反应.
主要成果:
- 实现了醇的定量转化为相应的化物,具有高达99%的选择性.
- 在离子液相中证明了催化剂分离,促进产品隔离和催化剂再利用.
- 与Mo/C (150°C,24小时) 相比,Ru/C需要较温和的条件 (130°C,4-6小时).
- Mo/C催化剂在现场成功地在五个周期内被重复使用,在醇氧化过程中没有失去活性或选择性.
结论:
- 开发的多相系统为醇氧化提供了一条高效和选择性的路径.
- 在这个系统中有效地利用异质催化剂,使其易于分离和回收.
- 这种方法为从生物原料中生产有价值的化物提供了一种可持续的方法.
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