| 학회 |
한국화학공학회 |
| 학술대회 |
2021년 봄 (04/21 ~ 04/23, 부산 BEXCO) |
| 권호 |
27권 1호, p.1104 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Ru/LaxCe1-xOy composite as an efficient catalyst for H2 production from ammonia decomposition |
| 초록 |
Ru doped on a series of LaxCe1-xOy composites by the deposition-precipitation (DP) method was studied in NH3 decomposition to generate COx-free H2. N2 physisorption, CO chemisorption, XRD, XPS, XAS, ICP-OES, HAADF-STEM, TPR, and TPD analysis were used to investigate the catalyst properties and to elucidate the beneficial properties for the reaction. Density functional theory (DFT) calculations provided insights into how the La addition promoted the high recombinative N2 desorption capacity leading to the high NH3 decomposition activity of the Ru-based catalysts at low temperatures. Among the tested catalysts, Ru/La0.33Ce0.67 exhibited superior catalytic activity and excellent stability. This study provides direct proof that the combination of the relatively small Ru size with strong interaction with the composite LaxCe1-xOy by the DP method and the optimized acidity–basicity property for the enhancement of both H2 and N2 desorption is essential to the development of Ru-based catalysts for NH3 decomposition. |
| 저자 |
김영민, Le Thien An, 김현우, 이수언, 김정랑, 김태완, 이유진, Do Quoc Cuong, 김거종, 채호정
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| 소속 |
한국화학(연) |
| 키워드 |
촉매 |
| E-Mail |
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| 원문파일 |
초록 보기 |
