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| Superior Performance of Thulium-Modified MnCeOx/TiO2 Catalysts for NOx Reduction at Low Temperature in Ammonia |
| Received:November 15, 2022 Revised:December 07, 2022 |
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| DOI： |
| KeyWord:chemistry of catalysis；MnCeTmyOx/TiO2 catalyst；low temperature denitrification；NH3-SCR |
| Author | Institution |
| LIU Kang |
省部共建碳基能源资源化学与利用国家重点实验室 |
| WEI Bo |
省部共建碳基能源资源化学与利用国家重点实验室 |
| WANG Shan |
省部共建碳基能源资源化学与利用国家重点实验室 |
| WANG Jian-jiang |
省部共建碳基能源资源化学与利用国家重点实验室 |
| CHEN Li-juan |
省部共建碳基能源资源化学与利用国家重点实验室 |
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| Abstract: |
| A low-temperature SCR denitration catalyst, MnCeTmyOx/TiO2 (y is molar ratio of Tm/Mn, y=0.1,0.3,0.5), was prepared by sol-gel method. The effect of TmOx on denitration performance of the catalyst was studied and analyzed. The developed MnCeTmOx/TiO2 catalyst improves the denitration performance of low-temperature selective catalytic reduction (SCR) with ammonia as reductant. The action and internal mechanism of TmOx were investigated by XRD and NH3-TPD analysis. The results show that when y=0.3, the catalyst has the best denitration effect, with 95% above NOx conversion rate at 150 ℃. At the same time, The test results of stability and performance of the catalyst performed at different space velocities show that the MnCeTm0.3Ox/TiO2 catalyst has good stability, and can also maintain excellent low-temperature NH3-SCR denitration performance at both space velocities. |
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