普鲁士蓝模拟衍生Co3O4作为利用分子氧气促进循环的选择性氧化催化剂
Shuang Wei1,2,3, Kexin Li1, Sheng Zhong1
1Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Innovation Academy for Green Manufacture, CAS, Beijing 100190, P. R. China.
ACS applied materials & interfaces
|February 1, 2024
概括
研究人员从普鲁士蓝色类似物开发了空洞的形和颗粒性氧化物催化剂,用于选择性环素氧化. 空洞形催化剂在一小时内实现了10%的环素转化和90%的KA油选择性.
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:
- 在中选择性C-H键的功能化对于可持续的化学过程至关重要.
- 催化氧化循环到KA油 (循环醇和循环松) 是功能化的关键反应.
研究的目的:
- 合成和评估来自普鲁士蓝色类似物 (PBA) 的空洞状Co3O4 (Co3O4-C) 和颗粒Co3O4 (Co3O4-P) 催化剂,用于选择性环素氧化.
- 研究催化剂表面特性与催化剂性能之间的结构-活性关系.
主要方法:
- 通过PBA的化合成Co3O4-C和Co3O4-P.
- 使用合成的Co3O4催化剂对环素进行催化氧化.
- 分析晶体平面,氧空隙,活性氧物种和吸附能力.
- 机理学研究以阐明反应途径.
主要成果:
- 具有主导 (311) 水晶平面的Co3O4-C显示了增强的环素吸附,导致更短的诱导周期和更快的反应速率.
- 在1小时内,Co3O4-C实现了10%的环素转化和90%的KA油选择性.
- 暴露 (220) 晶体平面的Co3O4-P,呈现出更高度的氧气空缺和活性氧物种,促进了对二氧化物的深度氧化.
结论:
- 通过调节PBA来定制催化剂表面是一种可行的策略,以影响催化性能.
- 由PBA衍生的Co3O4催化剂的表面特性显著影响环素氧化效率和产品选择性.
- 这项工作表明了开发选择性基功能化的高效催化剂的途径.
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