| 학회 |
한국화학공학회 |
| 학술대회 |
2006년 봄 (04/20 ~ 04/21, 대구 인터불고 호텔) |
| 권호 |
12권 1호, p.1023 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Preparation of Supported Pd Catalysts from Liquid Carbon Dioxide |
| 초록 |
Supported palladium (Pd) catalysts were prepared using an environmentally benign route. Pd (II) hexafluoroacetylacetonate (Pd(hfac)2) was impregnated into a low surface area (14.7 m2/g) alumina and high surface area (220 m2/g) alumina pellets based on liquid carbon dioxide (l-CO2). After depressurization to remove the CO2 and unabsorbed Pd(hfac)2, the impregnated Pd(hfac)2 was reduced in hydrogen at 75 oC. The Pd crystallite size on each support was measured by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The average crystallite size on the low surface area alumina increased from 12 nm to 72 nm and the Pd concentration increased from 0.15 to 1.54 wt% as the concentration of Pd(hfac)2 in solution was increased from 0.6 to 10.5 wt%. When the high surface area alumina was used, the Pd crystallite size increased from 2.7 to 6.9 nm and the Pd concentration increased from 0.58 to 3.94 wt% as the solution concentration was increased from 1.2 to 27.8 wt%. |
| 저자 |
김재훈1, Douglas J. Kiserow2, George W. Roberts3
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| 소속 |
1North Carolina State Univ. / National Research Council, 2U.S Army Research Office, 3North Carolina State Univ. |
| 키워드 |
palladium; liquid carbon dioxide
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| E-Mail |
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| VOD |
VOD 보기 |
| 원문파일 |
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