| 학회 |
한국화학공학회 |
| 학술대회 |
2004년 봄 (04/23 ~ 04/24, 공주대학교) |
| 권호 |
10권 1호, p.902 |
| 발표분야 |
재료 |
| 제목 |
Synthesis and Characterization of Modified V2O5/TiO2-Al2O3 xerogels |
| 초록 |
Vanadia supported on titania is a well-known catalyst for selective oxidation and ammoxidation of hydrocarbons. Titania has been used as an efficient catalyst support but it has some drawbacks such as low surface area, poor mechanical strength and thermal stability. On the other hand alumina has high surface area, good mechanical strength and thermal stability. In order to utilize such favorable properties of alumina, we have tried to prepare TiO2-Al2O3 composite xerogels. The present work is focused on the synthesis of V2O5/TiO2-Al2O3 xerogels using a modified sol-gel method to obtain highly active ammoxidation catalysts with highly dispersed vanadia species on the support surface. The conventional sol-gel complexation method led to lower amounts of vanadia surface species than this novel sol-gel method due to inherent uniformity of the sol-gel materials, which was confirmed by TPR and XRD TPR results indicated that hydrogen consumption of modified xerogels is higher than that of conventional xerogels. Besides, XRD results of modified xerogels exhibited characteristic peaks of crystalline V2O5.
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| 저자 |
이인자1, 최진순2, 서동진2, 박태진2, 이창하1, 이상득2, 노성욱3
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| 소속 |
1연세대, 2한국과학기술(연), 3KP chemical |
| 키워드 |
sol-gel; xerogel; titania; alumina; vanadia; ammoxidation
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| E-Mail |
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| 원문파일 |
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