选择性化二甲基酸到1,3-二醇超过Ga促进的Cu/SiO催化剂,具有增强的活性和稳定性
Jia Zhang1,2, Hongxuan Shi1,2, Jian Yang1
1State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, 730000, Lanzhou, PR China.
该研究开发了一种高效的铜催化剂,用于将二甲基酸盐 (DEM) 转化为1,3-二醇 (1,3-PDO). 这种催化剂在化反应中表现出色的性能和稳定性.
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
- 化学工程是化学工程的重要组成部分.
背景情况:
- 选择性化对于生产有价值的化学品至关重要.
- 甲基酸 (DEM) 是一种从生物质或合成气中获得的关键中间体.
- 开发稳定和高效的催化剂,用于将DEM化为1,3-propanediol (1,3-PDO) 是一个持续的挑战.
研究的目的:
- 合成和评估新的基于Cu的催化剂,用于选择性化DEM到1,3-PDO.
- 调查Ga促进对Cu/SiO2催化剂性能和稳定性的影响.
- 了解控制催化过程的结构-活动关系.
主要方法:
- 降水凝方法用于催化剂制备.
- 描述技术包括[如果已知,请提及具体技术,否则概括].
- 在不同的条件下测试DEM在选择性化中的催化性能.
主要成果:
- 该Ga促进的70Cu6Ga/SiO2催化剂实现了100%的DEM转化和76.6%的1,3-PDO选择性.
- 与单金属Cu/SiO2.2相比,双金属催化剂在180小时内表现出优越的稳定性.
- 加的结合增强了Cu-Ga相互作用,增加了Cu+比例,并产生了更多的易斯酸位点.
结论:
- 在CuGa/SiO2催化剂中,Cu0和Cu+物种之间的协同效应是有效化碳基的关键.
- 提升Ga显著提高了用于1,3-PDO生产的基于Cu的催化剂的催化性能和稳定性.
- 这项研究提供了一个有希望的催化系统,用于可持续生产1,3-PDO.
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