On the optimal Cs/Co ratio responsible for the N2O decomposition activity of the foam supported cobalt oxide catalysts
Structured foam catalysts for N2O decomposition containing Co and Cs were prepared via conventional and organic-assisted impregnation method (acetic acid, citric acid, glycerol, glycine, urea). Organic-assisted impregnation caused higher abundance of smaller particles and different faceting. Glycero...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Arabian Journal of Chemistry |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1878535223007736 |
| _version_ | 1827753373739253760 |
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| author | Anna Klegova Kateřina Pacultová Tomáš Kiška Joanna Gryboś Zbigniew Sojka Lucie Obalová |
| author_facet | Anna Klegova Kateřina Pacultová Tomáš Kiška Joanna Gryboś Zbigniew Sojka Lucie Obalová |
| author_sort | Anna Klegova |
| collection | DOAJ |
| description | Structured foam catalysts for N2O decomposition containing Co and Cs were prepared via conventional and organic-assisted impregnation method (acetic acid, citric acid, glycerol, glycine, urea). Organic-assisted impregnation caused higher abundance of smaller particles and different faceting. Glycerol usage leads to increase of specific rate constant for N2O decomposition, urea leads to its decrease. The optimal amount of Cs in Co3O4 deposited on the foam was 2–3 times higher than in the bulk Co3O4-Cs due to the dispersion of part of the Cs species over the bare support. The use of glycerol caused a better surface coverage by spinel phase, thus leaving less space for spreading the cesium on the support instead of on the spinel phase. The positive effect of glycerol on the performance of the catalysts with optimized cesium content was attributed to refaceting of the spinal nanocrystals, and greater resistance of the (100) planes to gaseous NO/H2O contaminates. |
| first_indexed | 2024-03-11T07:34:18Z |
| format | Article |
| id | doaj.art-d2bac7673ed444cca4ae2006cc6c7db4 |
| institution | Directory Open Access Journal |
| issn | 1878-5352 |
| language | English |
| last_indexed | 2024-03-11T07:34:18Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Arabian Journal of Chemistry |
| spelling | doaj.art-d2bac7673ed444cca4ae2006cc6c7db42023-11-17T05:25:57ZengElsevierArabian Journal of Chemistry1878-53522023-12-011612105311On the optimal Cs/Co ratio responsible for the N2O decomposition activity of the foam supported cobalt oxide catalystsAnna Klegova0Kateřina Pacultová1Tomáš Kiška2Joanna Gryboś3Zbigniew Sojka4Lucie Obalová5Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. listopadu 15/2172, Ostrava 708 00, Czech RepublicInstitute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. listopadu 15/2172, Ostrava 708 00, Czech Republic; Corresponding author.Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. listopadu 15/2172, Ostrava 708 00, Czech Republic; Faculty of Materials Science and Technology, VSB-Technical University of Ostrava, 17. listopadu 15/2172, Ostrava 708 00, Czech RepublicFaculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, PolandFaculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, PolandInstitute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. listopadu 15/2172, Ostrava 708 00, Czech RepublicStructured foam catalysts for N2O decomposition containing Co and Cs were prepared via conventional and organic-assisted impregnation method (acetic acid, citric acid, glycerol, glycine, urea). Organic-assisted impregnation caused higher abundance of smaller particles and different faceting. Glycerol usage leads to increase of specific rate constant for N2O decomposition, urea leads to its decrease. The optimal amount of Cs in Co3O4 deposited on the foam was 2–3 times higher than in the bulk Co3O4-Cs due to the dispersion of part of the Cs species over the bare support. The use of glycerol caused a better surface coverage by spinel phase, thus leaving less space for spreading the cesium on the support instead of on the spinel phase. The positive effect of glycerol on the performance of the catalysts with optimized cesium content was attributed to refaceting of the spinal nanocrystals, and greater resistance of the (100) planes to gaseous NO/H2O contaminates.http://www.sciencedirect.com/science/article/pii/S1878535223007736Cobalt oxideCeramic foamSupported CatalystN2O decompositionCesium effect |
| spellingShingle | Anna Klegova Kateřina Pacultová Tomáš Kiška Joanna Gryboś Zbigniew Sojka Lucie Obalová On the optimal Cs/Co ratio responsible for the N2O decomposition activity of the foam supported cobalt oxide catalysts Arabian Journal of Chemistry Cobalt oxide Ceramic foam Supported Catalyst N2O decomposition Cesium effect |
| title | On the optimal Cs/Co ratio responsible for the N2O decomposition activity of the foam supported cobalt oxide catalysts |
| title_full | On the optimal Cs/Co ratio responsible for the N2O decomposition activity of the foam supported cobalt oxide catalysts |
| title_fullStr | On the optimal Cs/Co ratio responsible for the N2O decomposition activity of the foam supported cobalt oxide catalysts |
| title_full_unstemmed | On the optimal Cs/Co ratio responsible for the N2O decomposition activity of the foam supported cobalt oxide catalysts |
| title_short | On the optimal Cs/Co ratio responsible for the N2O decomposition activity of the foam supported cobalt oxide catalysts |
| title_sort | on the optimal cs co ratio responsible for the n2o decomposition activity of the foam supported cobalt oxide catalysts |
| topic | Cobalt oxide Ceramic foam Supported Catalyst N2O decomposition Cesium effect |
| url | http://www.sciencedirect.com/science/article/pii/S1878535223007736 |
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