Title: | The effect of CuO loading on different method prepared CeO(2) catalyst for toluene oxidation |
Author(s): | Zeng Y; Wang Y; Song F; Zhang S; Zhong Q; |
Address: | "School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China. School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China; Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, PR China. School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China. Electronic address: shulezhang@163.com. School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China. Electronic address: zq304@njust.edu.cn" |
DOI: | 10.1016/j.scitotenv.2019.135635 |
ISSN/ISBN: | 1879-1026 (Electronic) 0048-9697 (Linking) |
Abstract: | "The support effect on CeO(2) supported CuO catalysts are extensively investigated, but few studies have been reported in volatile organic compounds (VOCs) oxidation. Herein, CuO was impregnated on three conventional method synthesized CeO(2) to study its impact on toluene total oxidation over CeO(2) at low temperature (=280 degrees C). Characterization results demonstrated that the shape and specific surface area of CeO(2) affected the degree of CuO dispersion, which determine the interaction between CuO and CeO(2). CuO significantly enhanced the toluene adsorption capacity of CeO(2), but lots of oxygen vacancies were lost during its loading. Although strong CuCe interaction induced new oxygen vacancies, the increase or decrease of final amount was related to the original surface properties of CeO(2). Mechanism analysis suggested that the activation of oxygen on oxygen vacancies controlled the toluene oxidation reaction rate. Therefore, the promotion or inhibition effect of CuO on CeO(2) for toluene oxidation depends on physical and chemical properties. Through this study, we have drawn some valuable information in guiding the synthesis and design of CuO-CeO(2) based catalysts" |
Keywords: | CuO-CeO(2) Oxygen adsorption activation Support effect Toluene oxidation; |
Notes: | "PubMed-not-MEDLINEZeng, Yiqing Wang, Yanan Song, Fujiao Zhang, Shule Zhong, Qin eng Netherlands 2019/12/07 Sci Total Environ. 2020 Apr 10; 712:135635. doi: 10.1016/j.scitotenv.2019.135635. Epub 2019 Nov 20" |