| 학회 |
한국화학공학회 |
| 학술대회 |
2005년 봄 (04/22 ~ 04/23, 여수대학교) |
| 권호 |
11권 1호, p.749 |
| 발표분야 |
유동층 |
| 제목 |
Effect of CO/SO2 on oxidation of NO over Pt based catalysts for Hybrid Fast SCR Process |
| 초록 |
The effects of O2, NO and NO2 concentrations on oxidation of NO over platinum catalysts on different supports have been determined. The activity order for NO oxidation reaction is found to be Pt/WO3/TiO2 ＞ Pt/TiO2 anatase ＞ Pt/TiO2 rutile ＞ Pt/Al2O3. Comparing the anatase catalyst containing WO3 and anatase itself, the catalyst containing WO3 exhibits the highest activity since WO3 acts as a promoter. The oxidation conversion of NO to NO2 increases with increasing oxygen concentration from 3 to 10%, but it levels off at higher concentrations. The conversion to NO2 decreases with increasing NO concentration and also it decreases by an addition of NO2 to the feed. From these observations, it can be claimed that oxidation of NO over Pt based catalysts is auto-inhibited by the reaction product of NO2. Further experiments were performed for oxidation of CO and SO2 and to determine their effects on NO oxidation. The NO conversion slightly decreases with increasing SO2 concentration over the anatase catalysts but the conversion is affected more by SO2 over the rutile catalyst. Moreover, the presence of CO provides remarkably high conversion of NO over all the catalysts tested. The NO conversion exhibits a maximum value with variation of CO concentration. |
| 저자 |
Irfan Muhammad Faisal, 구정회, 김상돈
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| 소속 |
한국과학기술원 |
| 키워드 |
Oxidation; Pt; NOx; SO2; CO
|
| E-Mail |
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| 원문파일 |
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