Formation of catalytic CuLaAl11O19/Al2O3composite powder |
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Authors: | Masakuri Ozawa Masateru Ito Suguru Suzuki |
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Affiliation: | (1) Nagoya Institute of Technology, CRL,, Tajimi, Gifu, 507-0071,, Japan |
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Abstract: | The solid-state reaction and hydrocarbon-removal activities of composite powders in the system of CuO and La-modified Al2O3 were studied for the purpose of their application to heat-stable catalyst in exhaust-treatment. X-ray diffraction revealed the formation of catalytic nanocomposite-powder of CuLaAl11O19 and -Al2O3 at 1100 °C from the solid-state reaction between -Al2O3, CuO and La2O3. The La-modification of -Al2O3 was effective to maintain the large surface areas of these composite powders. The C6H6 removal activities were compared with practical automotive catalyst in the system of Pt–Ce and -Al2O3. The composite-powder of CuLaAl11O19 and -Al2O3 is active for complete oxidation of benzene and the microstructure is favourable as a powder for catalytic coat-layer. |
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