| 학회 |
한국화학공학회 |
| 학술대회 |
2021년 가을 (10/27 ~ 10/29, 광주 김대중컨벤션센터) |
| 권호 |
27권 2호, p.2259 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Characterization of NH3 and N2O formations through individual reductants (H2, CO and HCs) over commercial three-way catalyst (TWC) |
| 초록 |
In the complex reaction network of three-way catalysts (TWC) system, the formations of NH3 and N2O are attributed by feed gas composition and individual reductants such as H2, CO and HCs. Converting 1000 ppm of NO through full feed conditions, the maximum NH3 formation (800 ppm) was observed under rich condition (0.97 ≤ λ < 1.00) with high temperatures (over 350 ℃). We also examined the maximum N2O formation (210 ppm) under the stoichiometric condition at low temperature range (250-350 ℃). To characterize the effects of individual reductants on NH3 and N2O formations, simple feed tests consisting of a single reductant (H2, CO or HCs) with NO, CO2 and H2O were conducted. The NH3 formation is promoted by H2 in the feed gas and additionally formed H2 through water gas shift reaction and steam reforming reactions via H2-NO reaction. In contrast to NH3, N2O is closely dependent on CO and/or HCs in the feed gas composition via the formation of surface NCO- species, which was identified by Diffuse Reflectance Infrared Spectroscopy (DRIFTS). |
| 저자 |
배우빈1, 강성봉1, 김도영1, 변상우1, 윤달영2, 정창호2
|
| 소속 |
1광주과학기술원, 2현대자동차 촉매연구팀 |
| 키워드 |
촉매 |
| E-Mail |
|
| 원문파일 |
초록 보기 |
