| Title: | Low-Temperature Combustion of Toluene over Cu-Doped SmMn(2)O(5) Mullite Catalysts via Creating Highly Active Cu(2+)-O-Mn(4+) Sites |
| Author(s): | Shen Y; Deng J; Han L; Ren W; Zhang D; |
| Address: | "State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, International Joint Laboratory of Catalytic Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China" |
| ISSN/ISBN: | 1520-5851 (Electronic) 0013-936X (Linking) |
| Abstract: | "Catalytic combustion of volatile organic compounds (VOCs) at low temperatures is still an urgent issue to be solved. Herein, low-temperature combustion of toluene over Cu-doped SmMn(2)O(5) mullite catalysts via creating highly active Cu(2+)-O-Mn(4+) sites has been originally demonstrated. Cu-doped SmMn(2)O(5) mullite catalysts exhibited 90% conversion of toluene at 206 degrees C and displayed robust stability even in the presence of water. It has been demonstrated that Cu doping created Cu(2+)-O-Mn(4+) active composite sites that were more exposed after removing surface Sm species via acid-etching. Benefiting from this, the redox and oxygen activation ability of catalysts was significantly enhanced. The consumption of benzaldehyde and benzoic acid as intermediate species and the CO(2) generation ability were apparently promoted, which were the direct reasons for the enhanced low-temperature combustion of toluene. This work provides novel ideas for the development of high-performance catalysts for low-temperature VOC combustion, which has great industrial application prospects" |
| Keywords: | SmMn2O5 mullite air pollution control catalytic combustion environmental catalysis toluene volatile organic compounds; |
| Notes: | "PubMed-not-MEDLINEShen, Yongjie Deng, Jiang Han, Lupeng Ren, Wei Zhang, Dengsong eng 2022/06/28 Environ Sci Technol. 2022 Jul 19; 56(14):10433-10441. doi: 10.1021/acs.est.2c02866. Epub 2022 Jun 25" |
