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185 Nm Photoreduction of CO2 to methane by water. Influence of the Presence of a Basic catalyst

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185 Nm Photoreduction of CO2 to methane by water. Influence of the Presence of a Basic catalyst

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dc.contributor.author Sastre Calabuig, Francesc es_ES
dc.contributor.author Corma Canós, Avelino es_ES
dc.contributor.author García Gómez, Hermenegildo es_ES
dc.date.accessioned 2016-04-29T12:24:28Z
dc.date.issued 2012-08-29
dc.identifier.issn 0002-7863
dc.identifier.uri http://hdl.handle.net/10251/63176
dc.description.abstract Photolysis of CO2 at 185 nm using a Hg lamp in the presence of H-2 or H2O leads to the formation of CH4 (after an induction period) and a lesser amount of CO. Using H-2 gas as reducing agent, up to 40% conversion was achieved with almost complete selectivity to methane and energy consumption of 1.55 Gcal/mol. When CO2 irradiation is carried out in the gas phase in the presence of H2O, both reagents can undergo photolysis, and H-2 generation from water is a competing process accompanying the formation of CO and CH4 (CO2 conversion 0.67% at 14 h). For the irradiation of CO2 using H2O as reducing agent, basic solids (K+-exchanged Y zeolite or hydrotalcites) can increase CO2 conversion up to 2.21% with total selectivity toward CH4 and an energy consumption of 4.5 Gcal/mol. This result opens a door in the quest for efficient photocatalysts that could further increase the apparent quantum yield of the process, particularly at longer wavelengths. es_ES
dc.description.sponsorship Financial support by the Spanish Ministry of Economy and Competitivity (CTQ-2009-11586) is gratefully acknowledged. en_EN
dc.language Inglés es_ES
dc.publisher American Chemical Society es_ES
dc.relation Spanish Ministry of Economy and Competitivity CTQ-2009-11586 es_ES
dc.relation.ispartof Journal of the American Chemical Society es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject DEEP-UV PHOTOLYSIS es_ES
dc.subject PHOTOCATALYTIC REDUCTION es_ES
dc.subject SOLAR FUELS es_ES
dc.subject ARTIFICIAL PHOTOSYNTHESIS es_ES
dc.subject CARBON-DIOXIDE es_ES
dc.subject ANIONIC CLAYS es_ES
dc.subject ZEOLITES es_ES
dc.subject CONVERSION es_ES
dc.subject ADSORPTION es_ES
dc.subject HYDROGEN es_ES
dc.subject.classification QUIMICA ORGANICA es_ES
dc.title 185 Nm Photoreduction of CO2 to methane by water. Influence of the Presence of a Basic catalyst es_ES
dc.type Artículo es_ES
dc.embargo.lift 10000-01-01
dc.embargo.terms forever es_ES
dc.identifier.doi 10.1021/ja304930t
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Química - Departament de Química es_ES
dc.description.bibliographicCitation Sastre Calabuig, F.; Corma Canós, A.; García Gómez, H. (2012). 185 Nm Photoreduction of CO2 to methane by water. Influence of the Presence of a Basic catalyst. Journal of the American Chemical Society. 134(34):14137-14141. doi:10.1021/ja304930t es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1021/ja304930t es_ES
dc.description.upvformatpinicio 14137 es_ES
dc.description.upvformatpfin 14141 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 134 es_ES
dc.description.issue 34 es_ES
dc.relation.senia 239332 es_ES


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