Journal Article

Stainless steel catalyst for air pollution control: structure, properties, and activity

Tang, Xiaolong, Chen, Chaoqi, Yi, Honghong, Wang, Weixiao, Zhao, Shunzheng

2022

Overview

With the awakening of environmental awareness, the importance of air quality to human health and the proper functioning of social mechanisms is becoming increasingly prominent. The low cost and high efficiency of catalytic technique makes it a natural choice for achieving deep air purification. Stainless steel alloys have demonstrated their full potential for application in a variety of catalytic fields. The diversity of 3D networks or fibrous structures increases the turbulence within the heterogeneous catalysis, balance the temperature distribution in the reaction bed and, in combination with a highly thermally conductive skeleton, avoid agglomeration and deactivation of the active components; corrosion resistance and thermal stability are adapted to highly endothermic/exothermic or corrosive reaction environments; oxide layers formed by bulk transition metals activated by thermal treatment or etching can significantly alter the physico-chemical properties between the substrate and active species, further improving the stability of stainless steel catalysts; suitable electronic conductivity can be applied to the electrothermal catalysis, which is expected to provide guidance for the reduction of intermittent emission exhausts and the storage of renewable energy. The current applications of stainless steel as catalyst or support in the air purification have covered soot particle capture and combustion, catalytic oxidation of VOCs, SCR, and air sterilization. This paper summarizes several preparation methods and presents the relationships between the preparation process and the activity, and reviews its application and the current status of research in atmospheric environmental management, proposing the advantages and challenges of the stainless steel-based catalysts.

• Publisher: Springer Berlin Heidelberg,Springer Nature B.V
• Subject: air / Air pollution / Air Pollution - prevention & control / Air pollution control / Air purification / Air quality / Alloy steels / Aquatic Pollution / Atmospheric Protection/Air Quality Control/Air Pollution / Catalysis / Catalysts / catalytic activity / Catalytic oxidation / Chemical properties / combustion / Corrosion / Corrosion resistance / Deactivation / Earth and Environmental Science / Ecotoxicology / Emissions control / Endothermic reactions / endothermy / Energy storage / Environment / Environmental awareness / Environmental Chemistry / Environmental Health / Environmental management / Environmental science / Etching / Exhaust emissions / Exhausts / Exothermic reactions / heat production / Heat treatment / human health / Humans / Outdoor air quality / Oxidation / Physicochemical properties / Pollution control / Renewable energy / renewable energy sources / Review / Review Article / Selective catalytic reduction / Soot / Soot - chemistry / species / Stainless steel / Stainless Steel - chemistry / Stainless steels / Steel alloys / Sterilization / Substrates / temperature / Temperature distribution / Thermal resistance / Thermal stability / Transition metals / turbulent flow / VOCs / Volatile organic compounds / Waste Water Technology / Water Management / Water Pollution Control