Preparation of MnO<sub>2</sub>/CNFs by Liquid Phase Coprecipitation Method and Its Performance in Low-temperature Denitrification
Based on CNFs supports, a series of MnO<sub>2</sub>/CNFs catalysts were synthesized by a liquid phase coprecipitation method, and it was applied to selective catalytic reduction (SCR) of NO. The microstructure, elemental composition, and valence state of the as-obtained catalysts were ch...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Journal of Materials Engineering
2018-09-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/Y2018/V46/I9/53 |
| Summary: | Based on CNFs supports, a series of MnO<sub>2</sub>/CNFs catalysts were synthesized by a liquid phase coprecipitation method, and it was applied to selective catalytic reduction (SCR) of NO. The microstructure, elemental composition, and valence state of the as-obtained catalysts were characterized by BET, XRD, FESEM, EDS, XPS and TEM. The results show that MnO<sub>2</sub> is distributed on the surface of CNFs with amorphous form equably as the active components. MnO<sub>2</sub>/CNFs catalyst shows up the best activity in the test of SCR at the testing temperature range of 80-180℃, when the loading amount is 6%. NO transformation rate is 65.25% at 80℃, and 95.25% at 180℃. Amorphous structure, favorable dispersion and higher content of surface oxide are the main cause of MnO<sub>2</sub>/CNFs's excellent catalytic activity at low temperature. MnO<sub>2</sub> is loaded on the CNFs without any acid-treated, which makes it more environment-friendly. |
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| ISSN: | 1001-4381 1001-4381 |