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DOI: https://doi.org/10.4491/eer.2020.642
Recent advances in heighten sulfur resistance of SCR catalysts: A review
Ling Zhao, Yu Zhang, and Mengdi Kang
School of Ecology and Environment, Inner Mongolia University, China
Corresponding Author: Ling Zhao ,Tel: +86-471-4991436, Email: nmzhl@hotmail.com
Received: November 23, 2020;  Accepted: December 28, 2020.
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ABSTRACT
NOx removal by selective catalytic reduction (SCR) technology is a research hotspot in the field of environmental catalysis, and this method is dominated by catalysts. However, denitrification catalyst is easy to be polluted by the presence of SO2, which seriously restricts its practical industrial application. This review focuses on the latest domestic and foreign research results and advancement in improving sulfur resistance of deNOx catalysts, reveals the sulfur poisoning mechanism and regeneration process, as well as introduces the positive role of quantum chemistry in the field of sulfur resistance. In view of the questions set forth in this review, the future development direction of deNOx catalysts is prospected, which provides valuable scientific guidance for the design and development of efficient and practical sulfur resistant deNOx catalysts.
Keywords: deNOx catalyst | DFT | Regeneration | Selective catalytic reduction | Sulfur poisoning
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