| 학회 | 한국화학공학회 |
| 학술대회 | 2016년 가을 (10/19 ~ 10/21, 대전컨벤션센터) |
| 권호 | 22권 2호, p.2353 |
| 발표분야 | 촉매 및 반응공학 |
| 제목 | How Pt interacts with CeO2 under the reducing and oxidizing environments at elevated temperature? The origin of improved thermal stability of Pt/CeO2 compared to CeO2 |
| 초록 | Higher metal dispersion can be obtained via strong interaction between surface precious metal and support, such as ceria. 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 of metal-ceria interaction is crucial for providing rational design of ceria based catalysts. In the present work, Pt-ceria interaction was analyzed in various aspects. Special attention is paid to investigate the effects of Pt loadings and various thermal treatments 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 facilitates high metal dispersion as well as the thermal stability enhancement of the ceria support. |
| 저자 | 이재하1, 유영석1, Xiaojun Chan2, 김태진3, 김도희4 |
| 소속 | 1서울대, 2Department of Materials Science and Chemical Engineering, 3Stony Brook Univ., 4USA |
| 키워드 | 기타 촉매분야 |
| VOD | VOD 보기 |
| 원문파일 | 초록 보기 |
