| 학회 |
한국공업화학회 |
| 학술대회 |
2016년 봄 (05/02 ~ 05/04, 여수 엑스포 컨벤션) |
| 권호 |
20권 1호 |
| 발표분야 |
촉매_포스터 |
| 제목 |
How Pt-ceria interacts under reductive and oxidative environment: the origin of improved thermal stability of Pt-ceria compared to ceria |
| 초록 |
When precious metal is loaded on ceria, they interact strongly with each other, so high metal dispersion is obtained. Many catalytic reactions, including automotive catalytic reaction and water-gas-shift reaction, utilize such strong metal support interaction between precious metal and ceria to attain high catalytic activity. Therefore, understanding how precious metal interacts with ceria becomes crucial in order to properly design catalytic reaction system. In the present work, Pt-ceria interaction was analyzed in various aspects. Special attention is paid to investigating the effects of Pt loadings and oxidative thermal treatment on metal support interaction. Consistent with previous reports, Pt is found to strongly interact with reducible surface oxygen (and surface oxygen vacancies) of ceria. Metal support interaction guaranteed high metal dispersion as well as the enhanced thermal stability of the ceria support. |
| 저자 |
이재하1, 유영석1, Xiaojun Chan2, 김태진2, 김도희1
|
| 소속 |
1서울대, 2Stony Brook Univ. |
| 키워드 |
Pt; ceria; metal-support interaction
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| E-Mail |
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