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Citation: Wen Bin, He Ming-Yuan, Song Jia-Qing, Zong Bao-Ning, Shu Xing-Tian. Effects of Synergy of Copper Oxide and Cerium Oxide on DnNOx Activity of CuCeMgAi(O) Catalyst[J]. Acta Physico-Chimica Sinica, ;2000, 16(05): 402-404. doi: 10.3866/PKU.WHXB20000505 shu

Effects of Synergy of Copper Oxide and Cerium Oxide on DnNOx Activity of CuCeMgAi(O) Catalyst

1.
Research Institute of Petroleum Processing,SINOPEC,Beijing 100083

Received Date: 25 January 2000
Available Online: 15 May 2000

Ce-Cu-containing catalyst (CeCuMgAl(O)) was prepared by coprecipitation whose catalytic activity for NO+CO in the presence of oxygen was examined and compared with the catalyst free of cerium. The effect of H 2O on the catalytic activity was also investigated. The results show that for NO+CO reaction in the presence of oxygen, the activity-temperature-window of CeCuMgAl(O) shifts to lower temperature than that of CuMgAl(O). The presence of H 2O gives rise to the significant changes of catalytic activity of these two catalysts in low temperature region: great reducing for CuMgAl(O) and intensive increase for CuCeMgAl(O) whereas no obvious effect in high temperature region. The synergy between CuCe oxides and thus much more Cu+ exist in the CeCuMgAl(O) than CuMgAl(O) are responsible for these differences.
- Synergy,
- DeNOx activity,
- H2O poisoning,
- Adsoption site
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