| Literature DB >> 31751925 |
Shibo Ma1, Huansheng Tan1, Yushi Li1, Peiqiang Wang1, Chen Zhao1, Xiaoyu Niu2, Yujun Zhu3.
Abstract
In the present work, a serial of Cu0.02Fe0.2CeyTi1-yOx catalysts are prepared by sol-gel method and applied for NH3-SCR of NO, meanwhile Cu0.02Fe0.2Ce0.2Ti0.8Ox shows good low-temperature NH3-SCR performance with/without water and an outstanding water resistance. The bulk structure, redox ability, surface acidity and surface species of Cu0.02Fe0.2CeyTi1-yOx are measured and discussed by series of characterization in details to illuminate the reasons for the good low-temperature activity and water resistance. The Ce modification can tune the surface acidic distribution, improve the surface oxygen content and surface oxidation reduction cycle (Ce4+ + Fe2+ ↔ Ce3+ + Fe3+), which contribute the good activity. In addition, the effect of water on NH3-SCR performance over Cu0.02Fe0.2TiOx and Cu0.02Fe0·2Ce0·2Ti0.8Ox are investigated emphatically by in situ DRIFTS.Entities:
Keywords: Cerium modification; Cu(0.02)Fe(0.2)Ce(y)Ti(1-y)O(x); Low-temperature NH(3)-SCR; NO removal; Water resistance
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Year: 2019 PMID： 31751925 DOI： 10.1016/j.chemosphere.2019.125309
Source DB: PubMed Journal: Chemosphere ISSN： 0045-6535 Impact factor: 7.086