ChemRxiv
These are preliminary reports that have not been peer-reviewed. They should not be regarded as conclusive, guide clinical practice/health-related behavior, or be reported in news media as established information. For more information, please see our FAQs.
DeNOx on MOF.pdf (1.96 MB)
0/0

Room Temperature Reduction of Nitrogen Oxide to Nitrogen on MetalOrganic Frameworks

preprint
submitted on 07.09.2020 and posted on 08.09.2020 by Marco Daturi, Vanessa BLASIN-AUBE, Ji Wong Yoon, Philippe Bazin, Alexandre Vimont, Jong-San Chang, Young Kyu Hwang, You-Kyong Seo, Seunghun Jang, Hyunju Chang, Stefan Wuttke, Masaaki Haneda, Patricia Horcajada, Christian Serre
Air pollution is an epochal concern, particularly in urban areas, and is linked to combustion processes 1 . The emission of nitrogen oxides (NOx) constitutes a critical environmental problem, and it can affect severely human health2,3,4 . At ambient temperature and pressure NOx decomposition is thermodynamically favoured; however, this process is kinetically inhibited, owing to a high activation energy5,6 . To date, no reported catalysts have had the required properties to lower the activation energy of this process without the help of coreacting agents and high temperatures7,8,9 . Here, we show that NO conversion to molecular nitrogen can be achieved at room temperature in the presence of O2 and H2O vapour, and in the absence of any further reducing agent, using iron-based Metal-Organic Frameworks (MOFs). Further, we demonstrate that MOFs work similarly to enzymes, but are stable in environments unfriendly to living matter. These findings open large perspectives on the solution of stringent problems in chemistry, such as the removal of pollutants or the activation of highly stable molecules.

History

Email Address of Submitting Author

daturi@ensicaen.fr

Institution

University of Caen, ENSICAEN, CNRS, Laboratory of Catalysis and Spectrochemistry

Country

France

ORCID For Submitting Author

0000-0001-5147-3260

Declaration of Conflict of Interest

No conflict of interest

Exports

Logo branding

Exports