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Alkali-promoted V2O5 catalysts for the partial oxidation of H2S to sulphur

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Alkali-promoted V2O5 catalysts for the partial oxidation of H2S to sulphur

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dc.contributor.author Soriano Rodríguez, Mª Dolores es_ES
dc.contributor.author López Nieto, José Manuel es_ES
dc.contributor.author Ivars Barceló, Francisco es_ES
dc.contributor.author Concepción Heydorn, Patricia es_ES
dc.contributor.author Rodriguez-Castellon, E. es_ES
dc.date.accessioned 2016-10-17T10:00:50Z
dc.date.available 2016-10-17T10:00:50Z
dc.date.issued 2012-09-30
dc.identifier.issn 0920-5861
dc.identifier.uri http://hdl.handle.net/10251/71914
dc.description.abstract [EN] Present paper describes the influence of the incorporation of alkali metal cations (AM = Li, Na, K, Cs; and an AM/V ratio of 0.04) and Na-content (Na/V ratio of 0.02-0.30) in alkali metal promoted V2O5 catalyst on both the catalyst structure and the catalytic performance in H2S partial oxidation reactions. The catalytic activity depends on the alkali metal and the amount of alkali metal added, although Na-containing catalysts seem to be the more active ones. However, selectivity to sulphur higher than 98% is achieved in the main of catalysts when working at reaction temperature lower than 220 degrees C. According to the characterization results of used catalysts, V4O9 is selectively formed during the catalytic tests on catalysts presenting V2O5 crystallites. In catalysts with Na/V ratios higher than 0.04, V4O9 and Na0.33V2O5 are observed, the presence of Na0.33V2O5 increasing when increasing the Na/V ratio. Accordingly, V4O9 and Na0.33V2O5 can be proposed as the active and selective crystalline phase in Na-containing catalysts. The role of the presence of V4+-O-V5+ pairs in partial oxidation of H2S is also discussed. (c) 2012 Elsevier B.V. All rights reserved. es_ES
dc.description.sponsorship Financial support from DGICYT in Spain through Project CTQ2009-14495 and Project MAT2009-10481 and FEDER funds are gratefully acknowledged. MDS thanks a fellowship from the Universidad Politecnica of Valencia.
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation DGICYT/CTQ2009-14495 es_ES
dc.relation DGICYT/MAT2009-10481 es_ES
dc.relation.ispartof Catalysis Today es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Alkali promoter es_ES
dc.subject Vanadium oxide es_ES
dc.subject V2O5 catalysts es_ES
dc.subject Partial oxidation of H2S es_ES
dc.subject Sulphur es_ES
dc.subject Hydrogen sulphide partial oxidation es_ES
dc.subject Vanadium oxide (V2O5 V4O9) es_ES
dc.subject Alkali metal (lithium sodium potassium caesium) es_ES
dc.title Alkali-promoted V2O5 catalysts for the partial oxidation of H2S to sulphur es_ES
dc.type Artículo es_ES
dc.type Comunicación en congreso
dc.identifier.doi 10.1016/j.cattod.2012.02.016
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química es_ES
dc.description.bibliographicCitation Soriano Rodríguez, MD.; López Nieto, JM.; Ivars Barceló, F.; Concepción Heydorn, P.; Rodriguez-Castellon, E. (2012). Alkali-promoted V2O5 catalysts for the partial oxidation of H2S to sulphur. Catalysis Today. 192(1):28-35. doi:10.1016/j.cattod.2012.02.016 es_ES
dc.description.accrualMethod S es_ES
dc.relation.conferencename 7th International Symposium on Group Five Elements
dc.relation.conferencedate May 08-11, 2011
dc.relation.conferenceplace Riccione, Italy
dc.relation.publisherversion http://dx.doi.org/10.1016/j.cattod.2012.02.016 es_ES
dc.description.upvformatpinicio 28 es_ES
dc.description.upvformatpfin 35 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 192 es_ES
dc.description.issue 1 es_ES
dc.relation.senia 236875 es_ES
dc.contributor.funder Dirección General de Investigación Científica y Técnica


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