| 학회 |
한국화학공학회 |
| 학술대회 |
2022년 봄 (04/20 ~ 04/23, 제주국제컨벤션센터) |
| 권호 |
28권 1호, p.268 |
| 발표분야 |
[주제 6] 석유화학 |
| 제목 |
Enhancement in Oxygen Transfer Rate of CuMn2O4 Oxygen Carrier via Selective Dopants: Role of dopant effects on O migration for Chemical Looping Combustion |
| 초록 |
In this system, The redox property of the oxygen carrier plays a critical role in determining the kinetics of the combustion process. This study investigated computationally and experimentally methane oxidation on spinel structure of Mn-Cu bimetallic oxygen carrier owing to its facile oxygen uncoupling (Mn and Cu) with high durability in the reduction cycle. Our simulation predicted that the mechanism of complete methane oxidation on CuMn2O4 involved two different rate-limiting steps. Additionally, Multiple metal dopants to the activation barriers of the rate-limiting steps were tested to enhance the performance. Specially, Ni-doped CuMn2O4 and V-doped CuMn2O4 showed promising results computationally. And the enhanced oxygen transfer rate of Ni-doped CuMn2O4 was confirmed experimentally. On the other hand, experimentally, V-doped CuMn2O4 provided a lower oxygen transfer rate than the other CuMn2O4 materials. Computational studies showed that the lower oxygen transfer rate stems from the hindrance of O migration by surface V dopants. These results suggest that the effects of O migration should be carefully considered when designing enhanced oxygen carriers using a dopant strategy. |
| 저자 |
서보석1, 부진호1, 박노국1, 정희주1, 류호정2, 백점인3, 강미숙1, 강도형1, 김민규1
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| 소속 |
1영남대, 2한국에너지기술(연), 3한국전력공사전력(연) |
| 키워드 |
에너지 환경(Energy and Environment) |
| E-Mail |
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| 원문파일 |
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