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Sci Total Environ

Title:		Recent advances in volatile organic compounds abatement by catalysis and catalytic hybrid processes: A critical review
Author(s):		Lee JE; Ok YS; Tsang DCW; Song J; Jung SC; Park YK;
Address:		"School of Environmental Engineering, University of Seoul, Seoul 02504, Republic of Korea. Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China. Department of Civil and Environmental Engineering, Sejong University, Seoul 05006, Republic of Korea. Department of Environmental Engineering, Sunchon National University, Suncheon 57922, Republic of Korea. School of Environmental Engineering, University of Seoul, Seoul 02504, Republic of Korea. Electronic address: catalica@uos.ac.kr"
Journal Title:		Sci Total Environ
Year:		2020
Volume:		20200219
Issue:
Page Number:		137405 -
DOI:		10.1016/j.scitotenv.2020.137405
ISSN/ISBN:		1879-1026 (Electronic) 0048-9697 (Linking)
Abstract:		"Air pollution, particularly for toxic and harmful compounds to humans and the environment, has aroused increasing public concerns. Among air pollutants, volatile organic compounds (VOCs) are the main sources of air pollution. Many attempts have been made to control VOCs using catalysts, plasma, photolysis, and adsorption. Among them, oxidative catalysis by noble metals or transition metal oxides is considered one of the most feasible and effective methods to control VOCs. This paper reviews the experimental achievements on the abatement of VOCs using noble metals, transition metals and modified metal oxide catalysts. Although the catalytic degradation of VOCs appears to be feasible, there are unavoidable problems when only catalysis treatments are applied to the field. Therefore, catalysts including hybrid processes are developed to improve the removal efficiency of VOCs. This review addresses new hybrid treatments to remove VOCs using catalysts, including hybrid treatment combined with plasma, photolysis, and adsorption. The mechanism of the oxidation of VOCs by catalysts is explained by adsorption-desorption principles, such as the Langmuir-Hinshelwood, Eley-Rideal, and Mars-van-Krevelen mechanisms. A pi-backbonding interaction between unsaturated compounds and transition metals is introduced to better understand the mechanism of VOC removals. Finally, several factors affecting the catalytic activities, such as support, component ratio, preparation method, metal loading, and deactivation factor, are discussed"
Keywords:		Catalysis Hybrid treatment Indoor air quality Plasma VOCs;
Notes:		"PubMed-not-MEDLINELee, Jung Eun Ok, Yong Sik Tsang, Daniel C W Song, JiHyeon Jung, Sang-Chul Park, Young-Kwon eng Netherlands 2020/03/03 Sci Total Environ. 2020 Jun 1; 719:137405. doi: 10.1016/j.scitotenv.2020.137405. Epub 2020 Feb 19"