| 학회 |
한국화학공학회 |
| 학술대회 |
2014년 봄 (04/23 ~ 04/25, 창원컨벤션센터) |
| 권호 |
20권 1호, p.775 |
| 발표분야 |
재료 |
| 제목 |
CeIVO2/Ce2IIIO3-silica composite materials and their catalytic activity for liquid phase organic transformations |
| 초록 |
We have synthesized two sets of highly ordered mesoporous CeIVO2-doped MCM-41 and MCM-48 silica materials with Ce/Si ratio up to 0.50 in a facile surfactant-assisted hydrothermal method using CTAB as a structure-directing surfactant under ammonia basic conditions. These samples were successfully reduced to Ce2IIIO3-silica species under H2 gas flow. Bifunctional catalytic activity of these ceria incorporated silica samples have been investigated for oxidation as well as acid catalyzed esterification reactions under mild conditions. Both the oxidation states of ceria have been proved highly efficient catalysts for liquid phase oxidation of numerous hydrocarbons like cyclohexene, styrene, benzyl alcohol, xylene etc. at room temperature under solvent-less condition whereas Lewis acidic role of cerium oxide has been explored by carrying out esterification reaction of various alcohols like benzyl alcohol, octanol, decanol etc. using acetic acid under mild condition. The surface acidic sites present in both CeIVO2-silica and Ce2IIIO3-silica composites have been measured and compared by ammonia-TPD techniques. |
| 저자 |
조은범1, Pal Nabanita2, 김덕준2
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| 소속 |
1서울과학기술대, 2성균관대 |
| 키워드 |
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| E-Mail |
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| 원문파일 |
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