| 학회 |
한국화학공학회 |
| 학술대회 |
2009년 봄 (04/23 ~ 04/24, 광주 김대중컨벤션센터) |
| 권호 |
15권 1호, p.1002 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Significance in N2O Emissions from NH3-SCR Reaction over V2O5/TiO2-Based Catalysts |
| 초록 |
Nitrous oxide (N2O) is a strong greenhouse gas and has been known to be produced from catalytic processes that are widely used for selectively reducing NOx by NH3. Thus, the extent of the formation of N2O upon SCR reaction with commercial V2O5/TiO2-based catalysts is of particular interest. Direct measurements for N2O formation during NH3-SCR reaction over commercial V2O5/TiO2-based systems were conducted using an on-line infrared (IR) analysis system with a gas cell having an optical path of 10 meters. A “standard” 1.41% V2O5-7.98% WO3/TiO2 catalyst was employed for this study with reference SCR catalysts. When directly measuring N2O concentrations during the course of SCR reaction, the extent of N2O formation depended significantly on reaction temperatures. The “standard” catalyst gave a decrease in NOx conversions at temperatures greater than 350oC from which N2O formation occurs. Other V2O5/TiO2-based catalysts with higher V2O5 amounts facilitated N2O production even at the same temperatures. Consequently, it presents significant N2O formation for SCR reaction with commercial V2O5-WO3/TiO2 catalysts and the need to develop a new catalyst having lower N2O production even at high temperatures. |
| 저자 |
김문현1, 이용현1, 함성원2
|
| 소속 |
1대구대, 2경일대 |
| 키워드 |
Nitrous oxide; Global warming; NH3-SCR; NOx
|
| E-Mail |
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| 원문파일 |
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