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

博文

【北化工庄仲滨】二氯乙烷在单原子Ru上的催化燃烧,高活性无副产物

已有 742 次阅读 2021-11-4 13:31 |个人分类:科研点滴启发|系统分类:科研笔记

Single-Atom Ru on Al2O3 for Highly Active and Selective 1,2-Dichloroethane Catalytic Degradation | ACS Applied Materials & Interfaces


1636003423(1).png

1636003390(1).jpg

1,2-Dichloroethane (1,2-DCE) is a toxic volatile organic compound, which is harmful to the environment and human health. Herein, we develop a single-atom Ru catalyst anchored on the mesoporous schistose γ-Al2O3 (Ru SACs/m-γ-Al2O3) to enhance the catalytic activity and selectivity toward 1,2-DCE degradation. The Ru SACs/m-γ-Al2O3 shows low T50 and T90 (the temperature for 50 and 90% conversion) of 215 and 289 °C, which are lower than those for Ru NPs/m-γ-Al2O3 (291 and 374 °C) and pristine m-γ-Al2O3 (323 and 386 °C). The degradation products are mainly CO2 (>94%) and HCl (>90%) by using the Ru SACs/m-γ-Al2O3 catalyst, and almost no byproducts are detected. Furthermore, Ru SACs/m-γ-Al2O3 also presents excellent anti-chlorine poisoning effect and water resistance during the stability test. This work may shed light on the development of efficient single-atom catalysts for the degradation of industrial pollutants.

1636003525(1).jpg



一直想做Ru单原子负载氧化铈,甚至是晶面可控的Ru,研究多氯副产物的情况,但是氧化铈上的Ru尤其是单原子很不容易表征,一直没有得出可靠的结论,这篇文章给出了部分“预期”,但是原因如果是简单因为氧化还原能力,未免又“让我失望了”,本希望由于是单原子分布,在加Cl2、HCl时少了部分活性位或距离太远,导致无法加氯的

Compared with the Ru NPs/m-γ-Al2O3, the Ru SACs/m-γ-Al2O3 lacks strong redox sites . Thus, the Ru SACs/m-γ-Al2O3 shows high selectivity without the formation of the polychlorinated byproducts.



https://blog.sciencenet.cn/blog-3913-1310905.html

上一篇:[转载]北京大学谢有畅获第八届催化成就奖 | 老骥伏枥 志在千里
下一篇:[转载]2021年度华东地区催化研讨会会议通知

0

该博文允许注册用户评论 请点击登录 评论 (0 个评论)

数据加载中...

Archiver|手机版|科学网 ( 京ICP备07017567号-12 )

GMT+8, 2022-1-29 21:15

Powered by ScienceNet.cn

Copyright © 2007- 中国科学报社

返回顶部