Synergistic catalytic elimination of NOx and VOCs: State of the art and open challenges

• Published in: Surfaces and interfaces Vol. 51
• Main Authors: Chu, Peiqi, Zhang, Long, Wang, Zhiwei, Wei, Lu, Liu, Yuxi, Dai, Hongxing, Duan, Erhong, Deng, Jiguang
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.08.2024
• Subjects: Catalysts; NOx; reaction mechanism; Synergistic catalytic degradation; VOCs; VOCs; Catalysts; reaction mechanism; NOx; Synergistic catalytic degradation
• ISSN: 2468-0230; 2468-0230
• DOI: 10.1016/j.surfin.2024.104718

Nitrogen oxide (NOx) and volatile organic compounds (VOCs) pose a severe threat to human health and eco-environment. Synergistic catalytic degradation has sparked significant interest in multipollutant control, especially for industries with limited space for technological upgrades to satisfy more stringent emission regulations. However, it is still in the early stages of development and faces many issues and challenges, such as highly efficient catalyst design, uncertain reaction mechanism for multipollutant removal, impact of other components in complex flue gas on the synergistic catalytic degradation, and environmental risk assessment of synergistic catalytic degradation in terms of byproduct. This review summarizes the advantage and disadvantage of common reported catalysts for synergistic catalytic degradation, discusses the factors affecting the performance and the optimization technique from the standpoint of acidity and redox characteristics, refines the synergistic catalytic degradation mechanism and deactivation process due to the presence of toxic component, and highlights the category and formation mechanism of the potential byproduct during the synergistic catalytic degradation. It will provide a reference for ongoing in-depth research and real-world industrial application in the area of synergistic catalytic degradation of NOx and VOCs. [Display omitted]