Thermally stable Pt-Al_2O_3 cryogel with high platinum concentration for catalytic combustion
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概要
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The alumina cryogel with 5 mass% platinum was prepared from aluminum sec-butoxide and H_2PtCl_6 through the sol-gel processing and subsequent freeze drying. The cryogel showed higher thermal stability of platinum than the corresponding xerogel and impregnation catalysts at elevated temperatures. Also for the catalytic VOC combustion the cryogel exhibited higher activity than other catalysts. It was revealed that about half of the platinum surface was inside the alumina cryogel, and such encapsulation was considered the principal cause for the higher stability.
- 2008-03-01
著者
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WATARI Koji
National Institute of Advanced Industrial Science and Technology (AIST)
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Watari Koji
National Inst. Of Advanced Industrial Sci. And Technol. (aist)
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OSAKI Toshihiko
National Institute of Advanced Industrial Science and Technology (AIST)
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YAMADA Kiho
National Institute of Advanced Industrial Science and Technology (AIST)
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TAJIRI Koji
National Institute of Advanced Industrial Science and Technology (AIST)
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