Gold–Ceria SBA-15-Supported Catalyst for CO Preferential Oxidation: Surface and Reactivity Studies
In this article, the preparation and application of gold and cerium catalysts supported on zirconium-doped mesoporous silica SBA-15 was studied. These materials have been prepared by two different methods and characterized to investigate their textural properties, dispersion of the active phases and...
Ausführliche Beschreibung
Autor*in: |
Álvaro Reyes-Carmona [verfasserIn] Aldo Talon [verfasserIn] Elisa Moretti [verfasserIn] Maurizio Lenarda [verfasserIn] Antonio Jiménez-López [verfasserIn] Enrique Rodríguez-Castellón [verfasserIn] |
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Format: |
E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2012 |
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Übergeordnetes Werk: |
In: Adsorption Science & Technology - SAGE Publications, 2018, 30(2012) |
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Übergeordnetes Werk: |
volume:30 ; year:2012 |
Links: |
Link aufrufen |
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DOI / URN: |
10.1260/0263-6174.30.8-9.751 |
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Katalog-ID: |
DOAJ00458662X |
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10.1260/0263-6174.30.8-9.751 doi (DE-627)DOAJ00458662X (DE-599)DOAJ03bc6e905e2a4cb9a5f5838a19c69e00 DE-627 ger DE-627 rakwb eng QD450-801 Álvaro Reyes-Carmona verfasserin aut Gold–Ceria SBA-15-Supported Catalyst for CO Preferential Oxidation: Surface and Reactivity Studies 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In this article, the preparation and application of gold and cerium catalysts supported on zirconium-doped mesoporous silica SBA-15 was studied. These materials have been prepared by two different methods and characterized to investigate their textural properties, dispersion of the active phases and oxidation states. Both materials exhibit a marked catalytic activity. The size of the gold nanoparticles is directly related to the CO conversion rate and to the selectivity towards CO 2 exhibiting a strong temperature dependence. An X-ray photoelectron spectroscopic study of the composition and chemical state of the nanoparticles indicates the presence of Au in a metallic state. Transmission electron microscopic micrographs indicate that the best catalyst shows a higher dispersion of Au in spite of its lower gold surface content. Physical and theoretical chemistry Aldo Talon verfasserin aut Elisa Moretti verfasserin aut Maurizio Lenarda verfasserin aut Antonio Jiménez-López verfasserin aut Enrique Rodríguez-Castellón verfasserin aut In Adsorption Science & Technology SAGE Publications, 2018 30(2012) (DE-627)320583260 (DE-600)2017917-0 20484038 nnns volume:30 year:2012 https://doi.org/10.1260/0263-6174.30.8-9.751 kostenfrei https://doaj.org/article/03bc6e905e2a4cb9a5f5838a19c69e00 kostenfrei https://doi.org/10.1260/0263-6174.30.8-9.751 kostenfrei https://doaj.org/toc/0263-6174 Journal toc kostenfrei https://doaj.org/toc/2048-4038 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_374 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2020 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_2706 GBV_ILN_2707 GBV_ILN_2890 GBV_ILN_2954 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 30 2012 |
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Gold–Ceria SBA-15-Supported Catalyst for CO Preferential Oxidation: Surface and Reactivity Studies |
abstract |
In this article, the preparation and application of gold and cerium catalysts supported on zirconium-doped mesoporous silica SBA-15 was studied. These materials have been prepared by two different methods and characterized to investigate their textural properties, dispersion of the active phases and oxidation states. Both materials exhibit a marked catalytic activity. The size of the gold nanoparticles is directly related to the CO conversion rate and to the selectivity towards CO 2 exhibiting a strong temperature dependence. An X-ray photoelectron spectroscopic study of the composition and chemical state of the nanoparticles indicates the presence of Au in a metallic state. Transmission electron microscopic micrographs indicate that the best catalyst shows a higher dispersion of Au in spite of its lower gold surface content. |
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In this article, the preparation and application of gold and cerium catalysts supported on zirconium-doped mesoporous silica SBA-15 was studied. These materials have been prepared by two different methods and characterized to investigate their textural properties, dispersion of the active phases and oxidation states. Both materials exhibit a marked catalytic activity. The size of the gold nanoparticles is directly related to the CO conversion rate and to the selectivity towards CO 2 exhibiting a strong temperature dependence. An X-ray photoelectron spectroscopic study of the composition and chemical state of the nanoparticles indicates the presence of Au in a metallic state. Transmission electron microscopic micrographs indicate that the best catalyst shows a higher dispersion of Au in spite of its lower gold surface content. |
abstract_unstemmed |
In this article, the preparation and application of gold and cerium catalysts supported on zirconium-doped mesoporous silica SBA-15 was studied. These materials have been prepared by two different methods and characterized to investigate their textural properties, dispersion of the active phases and oxidation states. Both materials exhibit a marked catalytic activity. The size of the gold nanoparticles is directly related to the CO conversion rate and to the selectivity towards CO 2 exhibiting a strong temperature dependence. An X-ray photoelectron spectroscopic study of the composition and chemical state of the nanoparticles indicates the presence of Au in a metallic state. Transmission electron microscopic micrographs indicate that the best catalyst shows a higher dispersion of Au in spite of its lower gold surface content. |
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