Synergistic Catalytic Oxidation of Typical Volatile Organic Compound Mixtures on Mn-Based Catalysts: Significant Promotion Effect and Reaction Mechanism

	Synergistic Catalytic Oxidation of Typical Volatile Organic Compound Mixtures on Mn-Based Catalysts: Significant Promotion Effect and Reaction Mechanism
	Pan, Tingting ; Deng, Hua ; Lu, Yuqin ; Ma, Jinzhu; Wang, Lian; Zhang, Changbin ; He, Hong
	2023
Source Publication	ENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN	0013-936X
Pages	1-11
Abstract	The miscellaneous volatile organic compounds (VOCs) in industrial flue gas streams usually demonstrate significant mutual inhibition effects, and the behavior of a particular VOC in mixtures is not clear, which hinders the application of catalytic technology. This study examines the catalytic oxidation and mixing effects of representative VOCs in industrial exhausts, consisting of acetone (AC), ethyl acetate (EA), and toluene (Tol), on common Mn-based catalysts (e.g., MnO2, Mn2O3, LaMnO3, and Mn3O4) by means of intrinsic activity evaluation, coadsorption, VOC temperature-programmed oxidation, in situ diffuse reflectance infrared Fourier transform spectroscopy, and gas chromatography-mass spectrometry. The results showed no inhibiting effect on the conversion of these VOCs when combusted together; instead, a significant mutual promotion effect was found, especially on Tol destruction, with a sharp decrease in the Tol T50 from 214 to 158 degrees C on MnO2. It is proposed for the first time that the addition of AC/EA in Tol combustion leads to the generation of o/m-methyl phenol, which changes the rate determining step of the ring-opening process, thus elevating the conversion of Tol together with AC and EA in the mixture at low temperatures.
Department	大气环境与污染控制实验室
Keyword	catalytic oxidation VOCs toluene MnO2 catalyst mixing effect
Document Type	期刊论文
Identifier	https://ir.rcees.ac.cn/handle/311016/48461
Collection	大气环境与污染控制实验室
Affiliation	1.Chinese Academy of Sciences 2.Institute of Urban Environment, CAS 3.University of Chinese Academy of Sciences, CAS 4.Research Center for Eco-Environmental Sciences (RCEES)
Recommended Citation GB/T 7714	Pan, Tingting,Deng, Hua,Lu, Yuqin,et al. Synergistic Catalytic Oxidation of Typical Volatile Organic Compound Mixtures on Mn-Based Catalysts: Significant Promotion Effect and Reaction Mechanism[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2023:1-11.
APA	Pan, Tingting.,Deng, Hua.,Lu, Yuqin.,Ma, Jinzhu.,Wang, Lian.,...&He, Hong.(2023).Synergistic Catalytic Oxidation of Typical Volatile Organic Compound Mixtures on Mn-Based Catalysts: Significant Promotion Effect and Reaction Mechanism.ENVIRONMENTAL SCIENCE & TECHNOLOGY,1-11.
MLA	Pan, Tingting,et al."Synergistic Catalytic Oxidation of Typical Volatile Organic Compound Mixtures on Mn-Based Catalysts: Significant Promotion Effect and Reaction Mechanism".ENVIRONMENTAL SCIENCE & TECHNOLOGY (2023):1-11.

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