Preparation of metal-based monolithic catalysts and their application in catalytic oxidation of gaseous pollutants
LI Yongfeng
LIANG Qiyi
LIU Zhi
CHENG Gao
JI Wenjin
DOU Yongshen
LIU Sanmao
Abstract：Significance Developing effective and scalable treatment methods to reduce emissions of gaseous pollutants,such as volatile organic compounds(VOCs)and ozone,is essential for mitigating their harmful effects on human health and the ecological envi-ronment.This study reviews the preparation of metal-based monolithic catalysts and their applications in catalytic oxidation of gaseous pollutants.
Progress Catalytic oxidation is advantageous for gaseous pollutant treatment due to its high purification efficiency,wide applica-bility for various raw materials,low secondary pollution,and overall economic viability.Compared with traditional granular cata-lysts,metal-based monolithic catalysts offer notable benefits,including high mechanical strength,low bed pressure drop,effi-cient heat transfer,and effective mass transfer.This paper summarizes and analyzes aspects such as types of structured metallic substrates,preparation methods for monolithic catalysts,and application of electric-assisted technologies in the purification of gaseous pollutants.
Conclusions and Prospects New methods are proposed for the in-situ growth of transition metal oxide active layers on structured metallic substrates,including electroless plating self-deposition and one-step method utilizing redox reactions between two gal-vanic cells.These methods improve the dispersion uniformity and the adhesion strength of active components on smooth metal surfaces while reducing catalyst production costs by incorporating low-cost metal oxides for synergistic catalysis.Additionally,introducing novel electric-assisted technologies such as direct internal heating via electrothermal effects and electric-assisted catalytic oxidation can greatly reduce energy consumption and improve the activity and stability in the catalytic oxidation of gas-eous pollutants.
Keywords：volatile organic compoundsozonemonolithic catalystcatalytic oxidation
Publication Date：2025-03-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：19( 184-202 )