Physical Properties and Selective CO Oxidation of Coprecipitated CuO/CeO2 Catalysts Depending on the CuO in the Samples
This paper investigates the effects of CuO contents in the CuO-CeO2 catalysts to the variation in physical properties of CuO/CeO2 catalysts and correlates them to their catalytic activities on selective CO oxidation. The characteristic of crystallites were revealed by X-ray diffraction, and their mo...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2013/374080 |
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| author | Akkarat Wongkaew Wichai Kongsi Pichet Limsuwan |
| author_facet | Akkarat Wongkaew Wichai Kongsi Pichet Limsuwan |
| author_sort | Akkarat Wongkaew |
| collection | DOAJ |
| description | This paper investigates the effects of CuO contents in the CuO-CeO2 catalysts to the variation in physical properties of CuO/CeO2 catalysts and correlates them to their catalytic activities on selective CO oxidation. The characteristic of crystallites were revealed by X-ray diffraction, and their morphological developments were examined with TEM, SEM, and BET methods. Catalytic performance of catalysts was investigated in the temperature range of 90–240°C. The results showed that the catalyst was optimized at CuO loading of 20 wt.%. This was due to the high dispersion of CuO, high specific surface area, small crystallite sizes, and low degree of CuO agglomeration. Complete CO conversion with near 100% selectivity was achieved at a temperature below 120°C. The optimal performance was seen as a balance between CuO content and dispersion observed with growth, morphology, and agglomeration of nanostructures. |
| format | Article |
| id | doaj-art-459b855d2e12400a8dbea77a1aa1803a |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-459b855d2e12400a8dbea77a1aa1803a2025-02-03T05:43:41ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422013-01-01201310.1155/2013/374080374080Physical Properties and Selective CO Oxidation of Coprecipitated CuO/CeO2 Catalysts Depending on the CuO in the SamplesAkkarat Wongkaew0Wichai Kongsi1Pichet Limsuwan2Department of Chemical Engineering, Faculty of Engineering, Burapha University, Chonburi 20131, ThailandDepartment of Physics, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok 10140, ThailandDepartment of Physics, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok 10140, ThailandThis paper investigates the effects of CuO contents in the CuO-CeO2 catalysts to the variation in physical properties of CuO/CeO2 catalysts and correlates them to their catalytic activities on selective CO oxidation. The characteristic of crystallites were revealed by X-ray diffraction, and their morphological developments were examined with TEM, SEM, and BET methods. Catalytic performance of catalysts was investigated in the temperature range of 90–240°C. The results showed that the catalyst was optimized at CuO loading of 20 wt.%. This was due to the high dispersion of CuO, high specific surface area, small crystallite sizes, and low degree of CuO agglomeration. Complete CO conversion with near 100% selectivity was achieved at a temperature below 120°C. The optimal performance was seen as a balance between CuO content and dispersion observed with growth, morphology, and agglomeration of nanostructures.http://dx.doi.org/10.1155/2013/374080 |
| spellingShingle | Akkarat Wongkaew Wichai Kongsi Pichet Limsuwan Physical Properties and Selective CO Oxidation of Coprecipitated CuO/CeO2 Catalysts Depending on the CuO in the Samples Advances in Materials Science and Engineering |
| title | Physical Properties and Selective CO Oxidation of Coprecipitated CuO/CeO2 Catalysts Depending on the CuO in the Samples |
| title_full | Physical Properties and Selective CO Oxidation of Coprecipitated CuO/CeO2 Catalysts Depending on the CuO in the Samples |
| title_fullStr | Physical Properties and Selective CO Oxidation of Coprecipitated CuO/CeO2 Catalysts Depending on the CuO in the Samples |
| title_full_unstemmed | Physical Properties and Selective CO Oxidation of Coprecipitated CuO/CeO2 Catalysts Depending on the CuO in the Samples |
| title_short | Physical Properties and Selective CO Oxidation of Coprecipitated CuO/CeO2 Catalysts Depending on the CuO in the Samples |
| title_sort | physical properties and selective co oxidation of coprecipitated cuo ceo2 catalysts depending on the cuo in the samples |
| url | http://dx.doi.org/10.1155/2013/374080 |
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