| 학회 |
한국공업화학회 |
| 학술대회 |
2017년 가을 (11/08 ~ 11/10, 부산 벡스코(BEXCO)) |
| 권호 |
21권 2호 |
| 발표분야 |
우수논문(구두)_박사과정 |
| 제목 |
Activation of Pd/SSZ-13 by hydrothermal aging treatment for low temperature NO adsorption ability |
| 초록 |
Pd/SSZ-13 after hydrothermal aging (HTA) treatment at 750 °C for 25 hr exhibited improved NO adsorption performance at low temperature (below 120 °C), although those calcined at 500 °C (fresh) did not have good NO adsorption ability irrespective of the Pd loading methods. Investigation of Pd species such as H2-TPR and EXAFS clearly demonstrate that PdO primarily existed over the fresh samples, whereas HTA samples contained ionic Pd species, indicating the redispersion of PdO into highly dispersed Pd ion species. DRIFT results show the formation of nitrosyl complexes adsorbed on Pd ions, which are directly related to the NOx desorption peaks. All combined results provide the evidence about the generation of ionic Pd species arising from the HTA treatment, which play as the NO adsorption sites. |
| 저자 |
유영석1, 이재하1, 이효경2, 김창환2, 김도희1
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| 소속 |
1서울대, 2현대자동차 |
| 키워드 |
Cold start applicaiton; Pd/SSZ-13; Hydrothermal aging treatment; low temperature NO adsorption; passive NO adsorber
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| E-Mail |
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