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dc.contributor.authorLópez, Luis
dc.contributor.authorVelasco, Jorge
dc.contributor.authorMontes, V.
dc.contributor.authorMarinas, Alberto
dc.contributor.authorCabrera, Saúl
dc.contributor.authorBoutonne, Magali
dc.contributor.authorJärås, Sven
dc.date.accessioned2017-11-09T07:49:03Z
dc.date.available2017-11-09T07:49:03Z
dc.date.issued2015
dc.identifier.urihttp://hdl.handle.net/10396/15374
dc.description.abstractThe thermochemical processing of biomass is an alternative route for the manufacture of fuel-grade ethanol, in which the catalytic conversion of syngas to ethanol is a key step. The search for novel catalyst formulations, active sites and types of support is of current interest. In this work, the catalytic performance of an Rh/MCM-41 catalyst has been evaluated and compared with a typical Rh/SiO2 catalyst. They have been compared at identical reaction conditions (280 °C and 20 bar), at low syngas conversion (2.8%) and at same metal dispersion (H/Rh = 22%). Under these conditions, the catalysts showed different product selectivities. The differences have been attributed to the concentration of water vapor in the pores of Rh/MCM-41. The concentration of water vapor could promote the water-gas-shift-reaction generating some extra carbon dioxide and hydrogen, which in turn can induce side reactions and change the product selectivity. The extra hydrogen generated could facilitate the hydrogenation of a C2-oxygenated intermediate to ethanol, thus resulting in a higher ethanol selectivity over the Rh/MCM-41 catalyst as compared to the typical Rh/SiO2 catalyst; 24% and 8%, respectively. The catalysts have been characterized, before and after reaction, by N2-physisorption, X-ray photoelectron spectroscopy, X-ray diffraction, H2-chemisorption, transmission electron microscopy and temperature programmed reduction.es_ES
dc.format.mimetypeapplication/pdfes_ES
dc.language.isoenges_ES
dc.publisherMDPIes_ES
dc.rightshttps://creativecommons.org/licenses/by-nc-nd/4.0/es_ES
dc.sourceCatalysts 5(4), 1737-1755 (2015)es_ES
dc.subjectEthanoles_ES
dc.subjectSyngases_ES
dc.subjectRh/MCM-41 catalystes_ES
dc.subjectWater vapores_ES
dc.titleSynthesis of Ethanol from Syngas over Rh/MCM-41 Catalyst: Effect of Water on Product Selectivityes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherversionhttp://dx.doi.org/10.3390/catal5041737es_ES
dc.relation.projectIDJunta de Andalucía. P09-FQM-4781es_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES


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