Nanoflower-like Mg-doped MnOx for facile removal of low-concentration NOx at room temperature

• Published in: Catalysis communications Vol. 97; pp. 70 - 73
• Main Authors: Pan, Linyu, Zhou, Xiaoxia, Zhao, Han, Wan, Gang, Li, Qianru, Wang, Ning, Huang, Weimin, Chen, Hangrong
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 05.07.2017
• Subjects: Deactivation mechanism; Low-concentration NO removal; Mg doped MnOx nanoflower; Monolithic catalyst; Room temperature; Mg doped MnOx nanoflower; Low-concentration NO removal; Monolithic catalyst; Deactivation mechanism; Room temperature
• ISSN: 1566-7367; 1873-3905
• DOI: 10.1016/j.catcom.2017.04.020

Nanoflower-like Mg doped MnOx (Mg/MnOx) is synthesized via a facile and scalable redox reaction strategy for facile removal of low-concentration NOx at room temperature. The optimized sample Mg/MnOx exhibits good activity, giving 100% NO removal efficiency at room temperature for 10h under extremely high space velocity of 120,000mL−1g−1h−1 and low NO inlet concentration of 10ppm. The Mg/MnOx is found to gradually get inactive resulted from the generated NO2 and large amount of adsorbed NO covering active sites based on the results of characterizations and performance. Furthermore, the superior monolithic catalyst indicates great potential in actual application. [Display omitted] •Nanoflower Mg/MnOx was synthesized via a facile and scalable redox-precipitation.•Nanoflower Mg/MnOx catalyst shows good performance on low-concentration NOx removal.•The superior monolithic catalyst indicates great potential in actual application.•The accumulated NO2 covering active sites and its delayed desorption induce gradual deactivation.