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单原子Zr促进剂在支持的Pt催化剂上增强氧气激活

Weixin Huang^1,2, Hao Xu¹, Yang Deng²

¹The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, USA.

Nature communications

|August 7, 2025

概括

单原子促进剂,比如在中的,增强催化剂上的氧激活. 这提高了氧化反应中的催化性能,为异质催化提供了新的见解.

科学领域:

不同质的催化剂.
表面化学表面化学
材料科学是一种材料科学.

背景情况:

催化剂表面上的氧气激活对于氧化催化作用至关重要.
设计具有增强氧气激活的催化剂是一个持续的挑战.

研究的目的:

开发一种使用单原子促进剂增强氧激活的策略.
为了研究单位Zr物种在CeO2 (Zr1-CeO2) 中的作用,支持Pt催化剂.

主要方法:

使用原子捕获方法在CeO2中合成单位Zr物种.
制备Zr1-CeO2支持的Pt和CeO2支持的Pt催化剂.
在CO,C3H8和C3H6氧化中的催化性能评估.

主要成果:

与CeO2支持的Pt催化剂相比,Zr1-CeO2支持的Pt催化剂的性能得到了提高.
实现了显著较低的T50值 (50%转换温度).
一个不对称的Zr1-O-Pt1结构被确定为增强氧气激活的关键.

结论:

将单位原子纳入氧化物支物有效地促进了氧气的激活.
原子分散的促进剂在异质催化中起着重要作用.
这项研究为改善氧化催化剂的催化剂设计提供了新的见解.

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Catalysis

Catalysis

The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.