| Title: | Significant Improvement of Catalytic Performance for Chlorinated Volatile Organic Compound Oxidation over RuO(x) Supported on Acid-Etched Co(3)O(4) |
| Author(s): | Liu H; Yang J; Jia Y; Wang Z; Jiang M; Shen K; Zhao H; Guo Y; Guo Y; Wang L; Dai S; Zhan W; |
| Address: | "Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China. Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Centre, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China. Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai 200237, P. R. China. Key Laboratory for Advanced Materials and Joint International Research Laboratory for Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China" |
| ISSN/ISBN: | 1520-5851 (Electronic) 0013-936X (Linking) |
| Abstract: | "Ru catalysts have attracted increasing attention in catalytic oxidation of chlorinated volatile organic compounds (CVOCs). However, the development of Ru catalysts with high activity and thermal stability for CVOC oxidation still poses significant challenges due to their restrictive relationship. Herein, a strategy for constructing surface defects on Co(3)O(4) support by acid etching was utilized to strengthen the interaction between active RuO(x) species and the Co(3)O(4) support. Consequently, both the dispersity and thermal stability of RuO(x) species were significantly improved, achieving both high activity and stability of Ru catalysts for CVOC oxidation. The optimized Ru catalyst on the HF-etched Co(3)O(4) support (Ru/Co(3)O(4)-F) achieved complete oxidation of vinyl chloride at 260 degrees C under 30?ª+000 mL.g(-1).h(-1), which was lower than 300 degrees C for the Ru catalyst on the original Co(3)O(4) (Ru/Co(3)O(4)). More importantly, the Ru species on the Ru/Co(3)O(4)-F catalyst were hardly lost after calcination at 500-700 degrees C and even reacting at 650 degrees C for 120 h. On this basis, the polychlorinated byproducts over the Ru/Co(3)O(4)-F catalyst were almost completely effaced by phosphate modification on the catalyst surface. These findings show that the method combining acid etching of the support and phosphate modification provides a strategy for the advancement of catalyst design for CVOC oxidation" |
| Keywords: | Catalysis Oxidation-Reduction Phosphates *Volatile Organic Compounds Ru active sites acid etching chlorinated volatile organic compounds polychlorinated byproducts thermal stability; |
| Notes: | "MedlineLiu, Hao Yang, Jing Jia, Yanyan Wang, Zhiqiang Jiang, Mingxiang Shen, Kai Zhao, Hailin Guo, Yanglong Guo, Yun Wang, Li Dai, Sheng Zhan, Wangcheng eng Research Support, Non-U.S. Gov't 2021/07/17 Environ Sci Technol. 2021 Aug 3; 55(15):10734-10743. doi: 10.1021/acs.est.1c02970. Epub 2021 Jul 16" |
