| Title: | Boosting catalytic stability for VOCs removal by constructing PtCu alloy structure with superior oxygen activation behavior |
| Author(s): | Feng Y; Wei L; Wang Z; Liu Y; Dai H; Wang C; Hsi HC; Duan E; Peng Y; Deng J; |
| Address: | "Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Department of Environmental Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China. School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China. Graduate Institute of Environmental Engineering, National Taiwan University, Taipei 10617, Taiwan. School of Environmental Science and Engineering, Hebei University of Science and Technology, 26th Yuxiang Street, Shijiazhuang, Hebei 050018, China. State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China. Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Department of Environmental Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China. Electronic address: jgdeng@bjut.edu.cn" |
| DOI: | 10.1016/j.jhazmat.2022.129612 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "The elimination of volatile organic compounds (VOCs) emitted from the process of industry production is of great significance to improve the atmospheric environment. Herein the catalytic oxidation of the toluene and iso-hexane mixture, as the typical components from furniture paint industry, and the enhancement in the catalytic stability for toluene oxidation were investigated in detail. The formation rate of active oxygen species was very important for the development of the catalyst with high catalytic stability. Compared with the Pt/M catalyst, the Pt-Cu/M catalyst owned stronger ability of VOCs adsorption and gaseous oxygen activation by introducing additional sites for activating O(2). The Langmuir-Hinshelwood (adsorbed oxygen) and Mars-van Krevelen (lattice oxygen) mechanism existed in toluene oxidation over the present Pt/M and Pt-Cu/M catalysts, respectively. The change in the involved active oxygen species during toluene oxidation was resulted from the Pt-Cu alloy structure. In addition to the adsorption of O(2), a part of active lattice oxygen species can also be replenished by the migration of bulk lattice oxygen over Pt-Cu/M. With a rise in the reaction temperature, weakly adsorbed iso-hexane could be timely reacted with the more active lattice oxygen species to keep the catalytic stability over the Pt/M and Pt-Cu/M catalysts. Generally, we not only prepared a promising material for the catalytic removal of VOCs from the furniture paint industry, but also provided a new strategy for the generation of active oxygen species, making the catalyst exhibit high catalytic oxidation stability" |
| Keywords: | Catalytic stability Furniture paints industry Oxygen activation Pt-Cu alloy catalyst VOCs; |
| Notes: | "PubMed-not-MEDLINEFeng, Yuan Wei, Lu Wang, Zhiwei Liu, Yuxi Dai, Hongxing Wang, Can Hsi, Hsing-Cheng Duan, Erhong Peng, Yue Deng, Jiguang eng Netherlands 2022/07/26 J Hazard Mater. 2022 Oct 5; 439:129612. doi: 10.1016/j.jhazmat.2022.129612. Epub 2022 Jul 18" |
