| 학회 |
한국화학공학회 |
| 학술대회 |
2017년 봄 (04/26 ~ 04/28, ICC 제주) |
| 권호 |
23권 1호, p.735 |
| 발표분야 |
에너지 환경 |
| 제목 |
Effect of promoters on the stability of Co/CeO2 catalysts for the water-gas shift reaction |
| 초록 |
We prepared a series of alkali (Na and K) and alkaline earth metal (Ca and Ba) promoted Co/CeO2 catalysts to investigate the effect of the promoter on the stability of the catalyst in the high-temperature water-gas shift (WGS) reaction. Characterization of the catalysts using X−ray photoelectron spectroscopy (XPS) and O2−temperature programmed desorption (TPD) revealed that the alkali metal-doped Co/CeO2 formed a cobalt-rich surface with high oxygen mobility compared to the alkaline earth metal-doped catalysts. The activity results revealed higher performance by the alkali metal-doped catalysts than those doped with alkaline earth metals. However, a time-on-stream study showed that alkaline earth metal-doped catalysts have higher stability (50 h) than alkali metal-doped catalysts. The deactivation of the alkali metal-doped Co/CeO2 catalysts was attributed to oxidation of the active phase of the metallic cobalt, which is supported by thermogravimetric analysis (TGA) analysis of the used catalysts. |
| 저자 |
김경진1, 장원준1, 심재오1, 전경원1, 나현석1, 김학민1, 이열림1, 이다위1, 유성연1, 안선용1, 정대운2, 노현석1
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| 소속 |
1연세대, 2창원대 |
| 키워드 |
에너지전환 |
| E-Mail |
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| 원문파일 |
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