Influence of Precursor Compounds on the Structural and Catalytic Properties of Cobalt-Based Catalysts
The effects of different cobalt precursor compounds on the structural and catalytic properties of cobalt metal and Co 3 O 4 catalysts have been investigated. The techniques employed for characterizing the different solids were XRD, ESR and TEM methods, together with their effectiveness as catalysts...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SAGE Publications
2009-11-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263-6174.27.9.883 |
| _version_ | 1797285268534853632 |
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| author | M.M. Selim N.M. Deraz M. Ramadan |
| author_facet | M.M. Selim N.M. Deraz M. Ramadan |
| author_sort | M.M. Selim |
| collection | DOAJ |
| description | The effects of different cobalt precursor compounds on the structural and catalytic properties of cobalt metal and Co 3 O 4 catalysts have been investigated. The techniques employed for characterizing the different solids were XRD, ESR and TEM methods, together with their effectiveness as catalysts in the decomposition of H 2 O 2 at 30–50 °C. The results obtained indicate that the investigated catalysts contained clusters or very small particles of cobalt metal or Co 3 O 4 phases. Cobalt metal and Co 3 O 4 catalysts based on cobalt chloride exhibited higher catalytic activities than other catalysts derived from cobalt nitrate and sulphate salts, respectively, due to their decreased particle sizes. The activation energies of the catalytic reaction over the as-prepared catalysts revealed that the different precursor compounds did not modify the energetic nature of the active sites involved in the catalyzed reaction but changed their concentrations. |
| first_indexed | 2024-03-07T18:00:43Z |
| format | Article |
| id | doaj.art-71d4c9ef0fc1470683d027710dc91d27 |
| institution | Directory Open Access Journal |
| issn | 0263-6174 2048-4038 |
| language | English |
| last_indexed | 2024-03-07T18:00:43Z |
| publishDate | 2009-11-01 |
| publisher | SAGE Publications |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj.art-71d4c9ef0fc1470683d027710dc91d272024-03-02T10:53:46ZengSAGE PublicationsAdsorption Science & Technology0263-61742048-40382009-11-012710.1260/0263-6174.27.9.883Influence of Precursor Compounds on the Structural and Catalytic Properties of Cobalt-Based CatalystsM.M. Selim0N.M. Deraz1M. Ramadan Physical Chemistry Department, Laboratory of Surface Chemistry and Catalysis, National Research Center, Dokki, Cairo, Egypt Chemistry Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi ArabiaThe effects of different cobalt precursor compounds on the structural and catalytic properties of cobalt metal and Co 3 O 4 catalysts have been investigated. The techniques employed for characterizing the different solids were XRD, ESR and TEM methods, together with their effectiveness as catalysts in the decomposition of H 2 O 2 at 30–50 °C. The results obtained indicate that the investigated catalysts contained clusters or very small particles of cobalt metal or Co 3 O 4 phases. Cobalt metal and Co 3 O 4 catalysts based on cobalt chloride exhibited higher catalytic activities than other catalysts derived from cobalt nitrate and sulphate salts, respectively, due to their decreased particle sizes. The activation energies of the catalytic reaction over the as-prepared catalysts revealed that the different precursor compounds did not modify the energetic nature of the active sites involved in the catalyzed reaction but changed their concentrations.https://doi.org/10.1260/0263-6174.27.9.883 |
| spellingShingle | M.M. Selim N.M. Deraz M. Ramadan Influence of Precursor Compounds on the Structural and Catalytic Properties of Cobalt-Based Catalysts Adsorption Science & Technology |
| title | Influence of Precursor Compounds on the Structural and Catalytic Properties of Cobalt-Based Catalysts |
| title_full | Influence of Precursor Compounds on the Structural and Catalytic Properties of Cobalt-Based Catalysts |
| title_fullStr | Influence of Precursor Compounds on the Structural and Catalytic Properties of Cobalt-Based Catalysts |
| title_full_unstemmed | Influence of Precursor Compounds on the Structural and Catalytic Properties of Cobalt-Based Catalysts |
| title_short | Influence of Precursor Compounds on the Structural and Catalytic Properties of Cobalt-Based Catalysts |
| title_sort | influence of precursor compounds on the structural and catalytic properties of cobalt based catalysts |
| url | https://doi.org/10.1260/0263-6174.27.9.883 |
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