Properties and catalytic activity of NOx reduction of alumina-titania catalysts prepared by sol-gel method |
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| Authors: | K Kawabata H Yoshimatsu K Fujiwara T Yabuki A Osaka Y Miura |
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| Affiliation: | (1) Okayama Ceramics Research Foundation, 1406-18, Nishikatakami, Bizen-shi, 705-0021, Japan;(2) Industrial Technology Center of Okayama Prefecture, 5301, Haga, Okayama-shi, 701-1296, Japan;(3) Department of Bioscience and Technology, Faculty of Engineering, Okayama University, 3-1-1, Tsushima-Naka, Okayama-shi, 700-8530, Japan;(4) Department of Environmental Chemistry and Materials, Faculty of Environmental Science and Technology, Okayama University, 2-1-1, Tsushima-Naka, Okayama-shi, 700-8530, Japan |
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| Abstract: | The alumina-titania catalysts were prepared from various alumina and titania sources by sol-gel method, which were metal alkoxide and metal alkoxide modified with organic groups. Specific surface area, pore size distribution, solid acidity and catalytic activity of NO reduction for the alumina-titania catalysts depended on the alumina and titania sources. The alumina-titania catalyst prepared from metal alkoxide for alumina source and metal alkoxide modified with organic groups for titania source exhibited higher activity of NO reduction than the other alumina-titania catalysts. Catalytic activity of NO reduction for the alumina-titania catalysts depended on specific surface area and solid acidity. It was suggested that solid acidity of the alumina-titania catalysts depended on the coordination structure of Al atoms and the homogeneity of alumina and titania components. |
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