Mn-CeOx/MeOx(Ti, Al)/cordierite preparation with ultrasound-assisted for non-methane hydrocarbon removal from cooking oil fumes

Honghong Yi; Yonghai Huang; Xiaolong Tang; Shunzheng Zhao; Fengyu Gao; Xizhou Xie; Jiangen Wang; Zhongyu Yang

doi:10.1016/j.ultsonch.2018.12.043

Mn-CeOx/MeOx(Ti, Al)/cordierite preparation with ultrasound-assisted for non-methane hydrocarbon removal from cooking oil fumes

Ultrason Sonochem. 2019 May:53:126-133. doi: 10.1016/j.ultsonch.2018.12.043. Epub 2018 Dec 31.

Authors

Honghong Yi¹, Yonghai Huang², Xiaolong Tang³, Shunzheng Zhao¹, Fengyu Gao¹, Xizhou Xie², Jiangen Wang², Zhongyu Yang²

Affiliations

¹ Department of Environmental Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, PR China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing 100083, PR China.
² Department of Environmental Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, PR China.
³ Department of Environmental Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, PR China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing 100083, PR China. Electronic address: txiaolong@126.com.

PMID: 30642803
DOI: 10.1016/j.ultsonch.2018.12.043

Abstract

Cooking oil fumes (COFs) which contains a variety of volatile organic compounds (VOCs) is noxious not only to the environment but also to human health. Among COFs, the Non-methane Hydrocarbon (NMHC) removal rate is an index of the removal rate of COFs in the latest COFs purification standard (DB 11/1488-2018). Ultrasonic treatment can assist the synthesis of catalysts by creating "cavitation", which can improve the surface microtopography of catalysts. The research results in this paper revealed that the NMHC conversion of catalysts with ultrasonic treatment increased significantly. Besides, the samples that coated TiO₂ had a higher conversion of NMHC than that coated Al₂O₃ because TiO₂ has better oxidation performance than Al₂O₃. According to the XPS, SEM, EDS and BET data, because of the enhancement of interaction of the active components of catalysts caused by ultrasonic intervention, T-UU-CTAB exhibited the best catalytic performance, which attributed to the high levels of Mn⁴⁺/Mn³⁺, Ce⁴⁺/Ce³⁺ and O_ads/O_latt, more developed pore structure owing to the smaller particle size, higher dispersion of active components, larger specific surface area and larger total pore volume produced by the ultrasonic treatment. Moreover, the conversion of NMHC over T-UU-CTAB is 93.6% at 400 °C.

Keywords: Catalytic oxidation; Coating modification; Cooking oil fumes; Mn-Ce catalyst; NMHC; Ultrasonic treatment.