微波辅助的转化5-氧甲基化物到2,5-基氧酸在CuCo氧化物上的转化
Shivshankar Prasad1, Ajay Kumar1, Suman Dutta1
1GreenCat Laboratory, Department of Chemical Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, India.
ChemPlusChem
|October 27, 2024
概括
一种新的CuCo双金属催化剂有效地将生物质衍生的5-基甲 (HMF) 转化为2,5-基酸 (FDCA),这是可生物降解聚合物的前体. 优化的催化剂在温和条件下实现了高产量和转化,证明了出色的可回收性.
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
- 绿色化学 绿色化学
背景情况:
- 来自生物质的5-甲 (HMF) 是可持续化学生产的关键平台化学物质.
- 2,5-furandicarboxylic 酸 (FDCA) 是生产可生物降解聚合物,如聚乙烯酸的重要单体.
- 开发高效和选择性催化剂用于HMF氧化对于循环碳经济至关重要.
研究的目的:
- 合成和表征CuCo双金属催化剂,以有效地将HMF转化为FDCA.
- 研究开发的催化剂的催化活性,选择性和稳定性.
- 为了优化反应条件并了解结构-活性关系以提高性能.
主要方法:
- 合成CuCo双金属催化剂的共同沉方法.
- 使用三甲基氧化物作为氧化剂对HMF进行催化氧化.
- 使用BET,TEM,FE-SEM,XRD,H2-TPR,CO2 TPD,ICP-OES和XPS等技术进行广泛的表征.
- 使用HPLC和HR-MS进行反应产物的分析.
主要成果:
- CuCo(1:1) 催化剂表现出了显著的活性,在50°C时5分钟内实现了100%的HMF转换和70.67%的FDCA产量.
- 协同效应,包括吸附氧和氧空缺,有助于催化剂的高性能.
- 催化剂表现出良好的可回收性,在5个周期内保持高FDCA产量.
- 优化研究确定了影响HMF转换和FDCA产量的关键反应参数.
结论:
- 双金属CuCo催化剂,特别是CuCo(1:1),对于从HMF生产FDCA非常有效,为生物聚合物提供了一条可持续的途径.
- 催化剂的增强活性归因于协同效应和优化的物理化学特性.
- 开发的催化系统由于其效率,稳定性和可回收性,对工业应用具有前景.
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