| 학회 |
한국화학공학회 |
| 학술대회 |
2007년 봄 (04/19 ~ 04/20, 울산 롯데호텔) |
| 권호 |
13권 1호, p.1111 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Effect of hydrogen in promoting the activity of commercial three-way catalyst |
| 초록 |
The presence of hydrogen in the feed stream enhanced the activity of the commercial three-way catalyst (TWC) employed in the present study. In order to identify the role of hydrogen, the in-situ FTIR analysis has been systematically examined and then the reaction mechanism has been confirmed in view of microkinetics. Hydrogen promoted the oxidation activity of CO at low reaction temperatures via the reaction between adsorbed CO and OH (CO•S + 2OH•S → CO2 + H2O + 3S). In addition, hydrogen also assisted the NO dissociation reaction (NO•S + H•S → N•S + OH•S). These two reaction steps play an essential role in enhancing the TWC activity by decreasing the self-poisoning of CO and the inhibition effect of NO. Based upon the reaction mechanism confirmed by FTIR analysis, the kinetic study was also performed to quantify the H2 enhancement effect on the TWC activity. |
| 저자 |
백준현1, 권용탁1, 권혁재1, 남인식1, 오세혁2
|
| 소속 |
1포항공과대, 2General Motors R&D Center |
| 키워드 |
Three-way catalyst; hydrogen effect; FT-IR; CO oxidation; NO dissociation; reaction kinetics
|
| E-Mail |
|
| 원문파일 |
초록 보기 |
