| 학회 |
한국화학공학회 |
| 학술대회 |
2018년 가을 (10/24 ~ 10/26, 대구 EXCO) |
| 권호 |
24권 2호, p.2021 |
| 발표분야 |
촉매 및 반응공학(Catalysis and Reaction Engineering) |
| 제목 |
Comparative study of the formation and stability of single crystal La2O2CO3 materials |
| 초록 |
The different single crystal La2O2CO3 phases are one of key parameters influencing heterogeneous catalytic behavior of La2O3-containing catalysts. In this study, we prepared single crystal La2O2CO3 materials by different methods and comparatively investigated the formation of La2O2CO3 phases in the prepared materials along with a theoretical calculation. The conventional precipitation method at room temperature generated the monoclinic La2O2CO3 structure while the ethylene glycol combustion method and the hydrothermal method brought the hexagonal La2O2CO3 phase. The formation of the hexagonal phase would be due to continuous gas releasing in the ethylene glycol combustion method and the limited supply of CO2 gas in the hydrothermal method. In contrast, the stable and continuous supply of CO2 gas at room temperature in the precipitation method could form the more stable monoclinic La2O2CO3 structure, which was confirmed by an additional theoretical calculation. |
| 저자 |
우홍안1, Pham Thanh Truc1, 정해원1, 강성구1, Yong Men2, 신은우1
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| 소속 |
1울산대, 2Shanghai Univ. of Engineering Science |
| 키워드 |
촉매 및 반응공학 |
| E-Mail |
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| 원문파일 |
초록 보기 |
