| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 |
25권 1호 |
| 발표분야 |
학생우수논문발표(박사과정) |
| 제목 |
Layered Double Hydroxide Derived Intermetallic Ni3GaCx Catalysts for Dry Reforming of Methane |
| 초록 |
NiMgGa-layered double hydroxide (NMG-LDH) was synthesized as an efficient catalyst precursor for dry reforming of methane which shows high stability. NMG-LDH was transformed to Ni3Ga intermetallic structure after the reduction process, which exhibited high CH4 and CO2 conversion as well as high stability compared to other reported monometallic Ni-based catalysts under similar reaction conditions. The stability of Ni3Ga intermetallic catalysts was superior to that of monometallic catalysts due to high coke resistance property. The formation of unique intermetallic carbide (Ni3GaCx) during the reaction was responsible for the outstanding stability compare to the conventional Ni metal phase. In situ XRD analysis was investigated to elucidate formation mechanism of Ni3GaCx structure and reaction mechanism on the Ni3GaCx during the reaction. Carburization of Ni3Ga by CH4 and oxidation of Ni3GaCx by CO2 make a redox cycle, resulting in high activity and stability. |
| 저자 |
김광영, 이재성
|
| 소속 |
UNIST |
| 키워드 |
dry reforming of methane; intermetallic structure; intermetallic carbide
|
| E-Mail |
|
