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231224s2011 xx |||||o 00| ||eng c |
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|a 10.1021/la201338w
|2 doi
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|a pubmed24n0698.xml
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|a eng
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1 |
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|a Levasseur, Benoit
|e verfasserin
|4 aut
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|a Role of Zr4+ cations in NO2 adsorption on Ce(1-x)Zr(x)O2 mixed oxides at ambient conditions
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|c 2011
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 03.11.2011
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|a Date Revised 26.07.2011
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Mixed oxides Ce(1-x)Zr(x)O(2) prepared by slow coprecipitation in NaOH were tested for NO(2) adsorption in dynamic conditions at room temperature. The samples were characterized before and after exposure to NO(2) by XRD, N(2)-adsorption, thermal analysis, potentiometric titration, and FT-IR. Mixed oxides show a better NO(2) adsorption capacity than the parent materials (CeO(2) and Zr(OH)(4)). This effect is linked to the presence of reduced cerium and oxygen vacancies induced by the addition of Zr(4+) cations to the structure. The results indicate that NO(2) reacts with Ce(3+) to form nitrite and nitrate species on the surface. The NO retention increases with an increase in the Zr(OH)(4) content. A decrease in the density of -OH groups on the surface after the exposure to NO(2), suggests their involvement in reactive adsorption of NO and/or NO(2). From the structural point of view, no real difference was observed on the Ce(1-x)Zr(x)O(2) materials before and after exposure to NO(2)
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|a Journal Article
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1 |
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|a Ebrahim, Amani M
|e verfasserin
|4 aut
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1 |
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|a Bandosz, Teresa J
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 27(2011), 15 vom: 02. Aug., Seite 9379-86
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:27
|g year:2011
|g number:15
|g day:02
|g month:08
|g pages:9379-86
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|u http://dx.doi.org/10.1021/la201338w
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