催化中国, 中国催化分享 http://blog.sciencenet.cn/u/catachina 化学家(www.chemj.cn)

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收获来自娄教授的一篇CO氧化ACS Catal.文章

已有 545 次阅读 2020-5-5 11:16 |个人分类:科研点滴启发|系统分类:科研笔记


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Abstract

Identifying the activity origin of noble metal-based catalysts is extremely important for fundamental research and practical application. We report single Au atoms on Co3O4 (Au1/Co3O4 SAC) exhibit excellent activity and stability for CO oxidation and the activity origin of Au1/Co3O4 SAC is an active area centered by Au1 atom with one nearby Co and O atoms (and/or O vacancy). The turnover frequency is 3.1 s-1 at -75 oC, to our knowledge, which makes Au1/Co3O4 one of the most active Au catalysts for CO oxidation. The activity can be maintained after 10 cycles of temperature-programmed reaction from -100 to 300 oC or storage in air for 1 year, indicating the high stability of Au1/Co3O4 SAC. The isotope, X-ray absorption, kinetics, and DFT results further demonstrate CO2 is produced through two reaction pathways, following Langmuir-Hinshelwood (predominant) and Mars-van Krevelen (minor) mechanisms, respectively. The present findings pave the way for better understanding supported metal catalysts.

https://pubs.acs.org/doi/10.1021/acscatal.0c01303


感谢娄教授,我这个挂名有点“名不符实”


这篇文章见证了娄从学生成长为教授的整个历程,走过了数个岁月的“磨练”和“洗礼”,好在Au总是会发光的,且一旦发光再也不会褪色。


祝娄教授回国后的科研顺风顺水、出更多扎实的成果,更重要的是“带我一起飞”



http://blog.sciencenet.cn/blog-3913-1231682.html

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