| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 가을 (11/03 ~ 11/05, 대구 엑스코(EXCO)) |
| 권호 |
25권 2호 |
| 발표분야 |
포스터-촉매 |
| 제목 |
Investigation on the promoting effect of CO on low-temperature NOx adsorption over Pd/CeO2 |
| 초록 |
Passive NOx adsorber (PNA) can adsorb NOx at low temperatures and release NOx by thermal energy at high temperatures, allowing downstream catalytic converters to operate effectively. Pd/CeO2 is one of the promising catalysts for PNA applications with excellent NOx adsorption and CO oxidation ability. Understanding the correlation between CO and NOx adsorption is an essential process for PNA material development. Therefore, in this study, the accelerating effect of CO on the NOx adsorption capacity of Pd/CeO2 at low temperature was investigated. NOx adsorption capacity increased significantly when CO gas was included in the feed stream. The mechanism for this facilitating effect has been suggested through experimental data such as CO oxidation capacity during NOx adsorption. The model suggests that NOx was adsorbed to oxygen vacancies in CeO2 near the Pd particles generated during CO oxidation. |
| 저자 |
황성하, 이은원, 김도희
|
| 소속 |
서울대 |
| 키워드 |
Passive NOx adsorber; Pd/CeO2
|
| E-Mail |
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