Modified Layered Silicas as Catalysts for Conversion of Nitrogen Pollutants in Flue Gases—A Review

• Main Authors: Lucjan Chmielarz, Roman Dziembaj
• Format: Article
• Language: English
• Published: MDPI AG 2021-05-01
• Series: Catalysts
• Subjects: layered clay minerals; layered zeolites; selective catalytic reduction of NO_x with ammonia; selective catalytic oxidation of ammonia
• Online Access: https://www.mdpi.com/2073-4344/11/5/644

This paper is focused on the recent achievements in the studies of modified layered zeolites and cationic layered clay minerals. These materials are very promising catalysts in green chemistry processes, such as selective catalytic reduction of NO_x with ammonia (NH₃-SCR) and selective catalytic oxidation of ammonia to dinitrogen (NH₃-SCO). Special attention is paid to the roles of the micro- and mesoporous structures of the catalytic materials, the type and location of deposited transition metals, as well as surface acidity in the design of effective catalysts for the NH₃-SCR and NH₃-SCO processes. The majority of the presented analysis is based on the authors’ research.