Optimized Synthesis Routes of MnO<sub>x</sub>-ZrO<sub>2</sub> Hybrid Catalysts for Improved Toluene Combustion
In this contribution, the three Mn-Zr catalysts with Mn<sub>x</sub>Zr<sub>1−x</sub>O<sub>2</sub> hybrid phase were synthesized by two-step precipitation route (TP), conventional coprecipitation method (CP) and ball milling process (MP). The components, textural an...
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MDPI AG
2021-08-01
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| Online Access: | https://www.mdpi.com/2073-4344/11/9/1037 |
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| author | Xin Huang Luming Li Rong Liu Hongmei Li Li Lan Weiqi Zhou |
| author_facet | Xin Huang Luming Li Rong Liu Hongmei Li Li Lan Weiqi Zhou |
| author_sort | Xin Huang |
| collection | DOAJ |
| description | In this contribution, the three Mn-Zr catalysts with Mn<sub>x</sub>Zr<sub>1−x</sub>O<sub>2</sub> hybrid phase were synthesized by two-step precipitation route (TP), conventional coprecipitation method (CP) and ball milling process (MP). The components, textural and redox properties of the Mn-Zr hybrid catalysts were studied via XRD, BET, XPS, HR-TEM, H<sub>2</sub>-TPR. Regarding the variation of synthesis routes, the TP and CP routes offer a more obvious advantage in the adjustment of the concentration of Mn<sub>x</sub>Zr<sub>1−x</sub>O<sub>2</sub> solid solution compared to the MP process, which directly commands the content of Mn<sup>4+</sup> and oxygen vacancy and lattice oxygen, and thereby leads to the enhanced mobility of reactive oxygen species and catalytic activity for toluene combustion. Moreover, the TP-Mn2Zr3 catalyst with the enriched exposure content of 51.4% for the defective (111) lattice plane of Mn<sub>x</sub>Zr<sub>1−x</sub>O<sub>2</sub> exhibited higher catalytic activity and thermal stability for toluene oxidation than that of the CP-Mn2Zr3 sample with a value of 49.3%. This new observation will provide a new perspective on the design of bimetal catalysts with a higher VOCs combustion abatement. |
| first_indexed | 2024-03-10T07:50:27Z |
| format | Article |
| id | doaj.art-873608f0b25b498284b23463b9d8ddca |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T07:50:27Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-873608f0b25b498284b23463b9d8ddca2023-11-22T12:20:26ZengMDPI AGCatalysts2073-43442021-08-01119103710.3390/catal11091037Optimized Synthesis Routes of MnO<sub>x</sub>-ZrO<sub>2</sub> Hybrid Catalysts for Improved Toluene CombustionXin Huang0Luming Li1Rong Liu2Hongmei Li3Li Lan4Weiqi Zhou5School of Mechanical Engineering, Chengdu University, Chengdu 610106, ChinaCollege of Food and Biological Engineering, Chengdu University, Chengdu 610106, ChinaSchool of Preclinical Medicine (Nursing College), Chengdu University, Chengdu 610106, ChinaCollege of Food and Biological Engineering, Chengdu University, Chengdu 610106, ChinaCollege of Materials and Mechatronics, Jiangxi Science and Technology Normal University, Nanchang 330013, ChinaSchool of Mechanical Engineering, Chengdu University, Chengdu 610106, ChinaIn this contribution, the three Mn-Zr catalysts with Mn<sub>x</sub>Zr<sub>1−x</sub>O<sub>2</sub> hybrid phase were synthesized by two-step precipitation route (TP), conventional coprecipitation method (CP) and ball milling process (MP). The components, textural and redox properties of the Mn-Zr hybrid catalysts were studied via XRD, BET, XPS, HR-TEM, H<sub>2</sub>-TPR. Regarding the variation of synthesis routes, the TP and CP routes offer a more obvious advantage in the adjustment of the concentration of Mn<sub>x</sub>Zr<sub>1−x</sub>O<sub>2</sub> solid solution compared to the MP process, which directly commands the content of Mn<sup>4+</sup> and oxygen vacancy and lattice oxygen, and thereby leads to the enhanced mobility of reactive oxygen species and catalytic activity for toluene combustion. Moreover, the TP-Mn2Zr3 catalyst with the enriched exposure content of 51.4% for the defective (111) lattice plane of Mn<sub>x</sub>Zr<sub>1−x</sub>O<sub>2</sub> exhibited higher catalytic activity and thermal stability for toluene oxidation than that of the CP-Mn2Zr3 sample with a value of 49.3%. This new observation will provide a new perspective on the design of bimetal catalysts with a higher VOCs combustion abatement.https://www.mdpi.com/2073-4344/11/9/1037Mn-Zr solid solutiontolueneactive oxygencombustion |
| spellingShingle | Xin Huang Luming Li Rong Liu Hongmei Li Li Lan Weiqi Zhou Optimized Synthesis Routes of MnO<sub>x</sub>-ZrO<sub>2</sub> Hybrid Catalysts for Improved Toluene Combustion Catalysts Mn-Zr solid solution toluene active oxygen combustion |
| title | Optimized Synthesis Routes of MnO<sub>x</sub>-ZrO<sub>2</sub> Hybrid Catalysts for Improved Toluene Combustion |
| title_full | Optimized Synthesis Routes of MnO<sub>x</sub>-ZrO<sub>2</sub> Hybrid Catalysts for Improved Toluene Combustion |
| title_fullStr | Optimized Synthesis Routes of MnO<sub>x</sub>-ZrO<sub>2</sub> Hybrid Catalysts for Improved Toluene Combustion |
| title_full_unstemmed | Optimized Synthesis Routes of MnO<sub>x</sub>-ZrO<sub>2</sub> Hybrid Catalysts for Improved Toluene Combustion |
| title_short | Optimized Synthesis Routes of MnO<sub>x</sub>-ZrO<sub>2</sub> Hybrid Catalysts for Improved Toluene Combustion |
| title_sort | optimized synthesis routes of mno sub x sub zro sub 2 sub hybrid catalysts for improved toluene combustion |
| topic | Mn-Zr solid solution toluene active oxygen combustion |
| url | https://www.mdpi.com/2073-4344/11/9/1037 |
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