| 학회 |
한국화학공학회 |
| 학술대회 |
2009년 봄 (04/23 ~ 04/24, 광주 김대중컨벤션센터) |
| 권호 |
15권 1호, p.1050 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Performance of CopperCeria catalysts for water gas shift reaction in medium temperature range |
| 초록 |
A series of Cuceriacatalysts with Cu content in the range of 2090 at% Cu were prepared via coprecipitation, and their performance was tested for WGS reaction in medium temperature range(150360 oC). After the first run, the catalysts stabilized in terms of activity and BETarea. The WGS activity ofcatalysts increased with Cu loading and 80 at% Cuceria showed the best performance.BETarea alone is not an important property for explaining WGS activity, since the 80 at% catalyst showed a lower BET area than that oflower Cu loading catalysts. XRD results of the fresh catalysts showed highly dispersed copper species at low Cu loadings, but at high Cu loadings Cu was present in both dispersed and bulk like CuO. Formation of metallic Cu species during WGS reaction was confirmed by XRD results of used catalysts. H2TPR showed that the reduction started slightly early with increasing Cu loading of up to 80 at%, and the temperatures of the peak maximum were significantly lower than that of pure CuO, indicating a synergy of Cu and ceria. The catalysts showed stable activities at 360 oC andsignificant deactivationwas observed at elevated temperatures above 400 oC. |
| 저자 |
P.V.D.S. Gunawardana1, 이현찬1, P.P.C. Udani1, 김재창1, 류청걸2, 김동현1
|
| 소속 |
1경북대, 2한국전력공사 |
| 키워드 |
Cu-ceria; Water gas shift (WGS); Medium temperature
|
| E-Mail |
|
| 원문파일 |
초록 보기 |
