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231223s2009 xx |||||o 00| ||eng c |
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|a 10.1021/la901371g
|2 doi
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|a pubmed25n0633.xml
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|a (NLM)19588918
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|a eng
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|a Mudiyanselage, Kumudu
|e verfasserin
|4 aut
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|a Reactivity of a thick BaO film supported on Pt(111)
|b adsorption and reaction of NO2, H2O, and CO2
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|c 2009
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 04.12.2009
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|a Date Revised 21.11.2013
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|a published: Print
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|a Citation Status MEDLINE
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|a Reactions of NO2, H2O, and CO2 with a thick (>20 monolayer equivalent (MLE)) BaO film supported on Pt(111) were studied with temperature programmed desorption (TPD) and X-ray photoelectron spectroscopy (XPS). NO2 reacts with a thick BaO layer to form surface nitrite-nitrate ion pairs at 300 K, while only nitrates form at 600 K. In the thermal decomposition process of nitrite-nitrate ion pairs, first nitrites decompose and desorb as NO. Then nitrates decompose in two steps: at lower temperature with the release of NO2 and at higher temperature, nitrates dissociate to NO+O2. The thick BaO layer converts completely to Ba(OH)2 following the adsorption of H2O at 300 K. Dehydration/dehydroxylation of this hydroxide layer can be fully achieved by annealing to 550 K. CO2 also reacts with BaO to form BaCO3 that completely decomposes to regenerate BaO upon annealing to 825 K. However, the thick BaO film cannot be converted completely to Ba(NOx)2 or BaCO3 under the experimental conditions employed in this study
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Barium Compounds
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|a Hydroxides
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|a Nitrates
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|a Nitrites
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|a Oxides
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|a Water
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|a Platinum
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|a barium oxide
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|a hydroxide ion
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|a Yi, Cheol-Woo
|e verfasserin
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|a Szanyi, János
|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 1991
|g 25(2009), 18 vom: 15. Sept., Seite 10820-8
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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|g volume:25
|g year:2009
|g number:18
|g day:15
|g month:09
|g pages:10820-8
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|u http://dx.doi.org/10.1021/la901371g
|3 Volltext
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