CeO₂ nanorods (CeO₂-NRs) catalyst was prepared and treated with ammonia (NH₃) gas and the effect of NH₃ treatment on CeO₂ nanorods catalyst was also studied for improving NH₃-SCR of NO. And the catalysts were tested for NH₃-SCR of NO during 100–450 °C. The results showed that NH₃ treatment could improve the De-NO efficiency of the catalyst, which increased evidently in the range of about 160–410 °C. XPS results revealed that NH₃ treatment made CeO₂-NRs catalyst produce more Ce³⁺ on its surface, and thereby produced more oxygen vacancies and further promoted SCR reaction. The XRD and H₂-TPR characterization test results indicated that CeO₂ catalyst with NH₃ treatment could destroy its crystallinity and enhance the reducibility. In addition, the in situ DRIFTS results also exhibited more activity functional groups on the surface of N–CeO₂-NRs catalyst than that of CeO₂-NRs catalyst.

制备了CeO ₂纳米棒（CeO ₂ -NRs）催化剂，并用氨气（NH ₃）处理，并研究了NH ₃处理对CeO ₂纳米棒催化剂的影响，以提高NO的NH ₃ -SCR。并在 100-450 °C 期间对催化剂的 NO 的NH ₃ -SCR进行了测试。结果表明，NH ₃处理可以提高催化剂的脱氮效率，在约160-410℃范围内有明显提高。XPS 结果表明NH ₃处理使CeO ₂ -NRs 催化剂产生更多的Ce ³⁺从而在其表面产生更多的氧空位并进一步促进 SCR 反应。XRD和H ₂ -TPR表征测试结果表明，经过NH ₃处理的CeO ₂催化剂可以破坏其结晶度并提高还原性。此外，原位DRIFTS结果也显示出的N-的CeO的表面上更活性的官能团_2个-NRS催化剂比的CeO ₂ -NRS催化剂。