Nanosized CuO-ZrxCe1-xOy aerogel catalysts prepared by ethanol supercritical drying for catalytic deep oxidation of benzene
Nanosized CuO-ZrxCe1-xOy aerogel catalysts prepared by ethanol supercritical drying for catalytic deep oxidation of benzene
Nanosized CuO–ZrxCe1 ? xOy (0 ? x ? 0.5) solid solution oxide catalysts were prepared using a co-precipitation method followed with ethanol supercritical drying and calcination at 800 °C. The structural characteristics and redox behaviors were investigated by using X-ray diffraction (XRD), transmission electron microscopy (TEM), Raman spectroscopy, and temperature programmed reduction (H2-TPR). The results revealed that the as-prepared samples not only possessed large specific surface areas, small crystal sizes and high homogeneity of constituents, but also exhibited high catalytic activity for the complete oxidation of benzene. The structural properties and the catalytic performances of the aerogel catalysts strongly depended on the Ce/Zr molar ratio. The most highly active catalyst, CuO–Ce0.5Zr0.5Oy, could oxidize benzene at 300 °C and kept robust in a 50 h long-term duration test, implying it would be a good and cost-effective alternative to noble metal catalysts for the complete oxidation of VOCs at lower temperatures.
Heterogeneous catalysis, VOCs, Oxidation, CuO–CeO2, nanocrystal
109-114
Hu, C.Q.
091e749d-3892-4be7-9b9f-26b223f27a98
Zhu, Q.S.
aa90bc46-f7d5-40d6-9505-21028680800f
Jiang, Z.
bcf19e78-f5c3-48e6-802b-fe77bd12deab
2009
Hu, C.Q.
091e749d-3892-4be7-9b9f-26b223f27a98
Zhu, Q.S.
aa90bc46-f7d5-40d6-9505-21028680800f
Jiang, Z.
bcf19e78-f5c3-48e6-802b-fe77bd12deab
Hu, C.Q., Zhu, Q.S. and Jiang, Z.
(2009)
Nanosized CuO-ZrxCe1-xOy aerogel catalysts prepared by ethanol supercritical drying for catalytic deep oxidation of benzene.
Powder Technology, 194 (1-2), .
Abstract
Nanosized CuO–ZrxCe1 ? xOy (0 ? x ? 0.5) solid solution oxide catalysts were prepared using a co-precipitation method followed with ethanol supercritical drying and calcination at 800 °C. The structural characteristics and redox behaviors were investigated by using X-ray diffraction (XRD), transmission electron microscopy (TEM), Raman spectroscopy, and temperature programmed reduction (H2-TPR). The results revealed that the as-prepared samples not only possessed large specific surface areas, small crystal sizes and high homogeneity of constituents, but also exhibited high catalytic activity for the complete oxidation of benzene. The structural properties and the catalytic performances of the aerogel catalysts strongly depended on the Ce/Zr molar ratio. The most highly active catalyst, CuO–Ce0.5Zr0.5Oy, could oxidize benzene at 300 °C and kept robust in a 50 h long-term duration test, implying it would be a good and cost-effective alternative to noble metal catalysts for the complete oxidation of VOCs at lower temperatures.
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Published date: 2009
Keywords:
Heterogeneous catalysis, VOCs, Oxidation, CuO–CeO2, nanocrystal
Organisations:
Faculty of Engineering and the Environment
Identifiers
Local EPrints ID: 352773
URI: http://eprints.soton.ac.uk/id/eprint/352773
ISSN: 0032-5910
PURE UUID: a7921643-0af8-4a8d-9df6-219dfefa2250
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Date deposited: 20 May 2013 15:45
Last modified: 15 Mar 2024 03:47
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Author:
C.Q. Hu
Author:
Q.S. Zhu
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