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dc.contributor.author
Gambaro, Luis Alberto
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dc.date.available
2017-05-24T21:13:48Z
dc.date.issued
2006-03-16
dc.identifier.citation
Gambaro, Luis Alberto; Isopropanol adsorption–oxidation over V2O5—A mass spectrometry study; Elsevier Science; Journal of Molecular Catalysis A: Chemical; 247; 1-2; 16-3-2006; 31-35
dc.identifier.issn
1381-1169
dc.identifier.uri
http://hdl.handle.net/11336/16941
dc.description.abstract
The isopropanol adsorption–oxidation over V2O5 (transient study) was monitored by mass spectrometry (MS) of desorbed molecules produced over the catalyst by reactive interaction at 40, 100 and 150 °C. Then temperature programmed surface reaction (TPSR) tests were conducted to analyse the products again by MS. The acetone adsorption–oxidation was also studied at 40 °C by the same techniques. It was concluded that isopropanol molecules replace some of the water molecules adsorbed onto the V2O5 but do not interact with molecules of higher adsorption energies as methanol. The following products were identified by TPSR at low temperatures (<∼150 °C) variable amounts of water, isopropanol, propylene and acetone and, at ∼200–300 °C. water, CO, CO2, isopropyl ether. Isopropanol oxidation to acetone only use oxygen from V2O5. In turn, CO and CO2 desorptions are related with incomplete isopropanol oxidation to acetone, which is limited by the proportion of oxygen available in the solid. Formation of CO and CO2 occurs at the expense of atmospheric oxygen (He impurity). For such temperatures, V2O5 shows acid and minima redox properties.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc/2.5/ar/
dc.subject
Isopropanol
dc.subject
Acetone
dc.subject
V2o5
dc.subject
Adsorption
dc.subject
Oxidation
dc.subject
Mass Spectrometry
dc.subject.classification
Química Inorgánica y Nuclear
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dc.subject.classification
Ciencias Químicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Isopropanol adsorption–oxidation over V2O5—A mass spectrometry study
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-05-17T13:49:42Z
dc.journal.volume
247
dc.journal.number
1-2
dc.journal.pagination
31-35
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Ámsterdam
dc.description.fil
Fil: Gambaro, Luis Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
dc.journal.title
Journal of Molecular Catalysis A: Chemical
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1381116905007661
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.molcata.2005.11.005
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