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Cobalt hydrotalcites as catalysts for bioethanol steam reforming. The promoting effect of potassium on catalyst activity and long-term stability
dc.contributor.author | Espinal, Raul |
dc.contributor.author | Taboada, E. |
dc.contributor.author | Molins, E. |
dc.contributor.author | Chimentao, Ricardo J |
dc.contributor.author | Medina, Francisco |
dc.contributor.author | Llorca Piqué, Jordi |
dc.contributor.other | Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques |
dc.date.accessioned | 2013-06-28T10:41:09Z |
dc.date.created | 2012-10-30 |
dc.date.issued | 2012-10-30 |
dc.identifier.citation | Espinal, R. [et al.]. Cobalt hydrotalcites as catalysts for bioethanol steam reforming. The promoting effect of potassium on catalyst activity and long-term stability. "Applied catalysis B. Environmental", 30 Octubre 2012, vol. 127, p. 59-67. |
dc.identifier.issn | 0926-3373 |
dc.identifier.uri | http://hdl.handle.net/2117/19717 |
dc.description.abstract | Cobalt hydrotalcite-derived catalysts, doped with potassium, are active materials for the ethanol steam reforming reaction. Potassium addition reduces the acid sites number and strength. It acts as a promoter of the ethanol steam reforming (ESR); ethanol conversion is higher at lower temperature, as the amount of potassium at the surface of the catalyst increases. The catalysts are stable for long-term experiments (300 h) under high loads of ethanol and bioethanol (0.036 gEtOH min−1, H2O:CH3CH2OH = 4:1 molar). Moreover, they generate a low amount of carbon (0.0067 gC gcatalyst−1 h−1). The catalysts after reaction contain almost exclusively high spin Co2+ in cobalt oxide (or in (Co,Mg)O); only traces of metallic cobalt are identified by magnetometry, <0.1 wt.% Co0, suggesting that oxidized cobalt is an active species in ESR. |
dc.format.extent | 9 p. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Energies::Recursos energètics renovables |
dc.subject | Àrees temàtiques de la UPC::Enginyeria química::Química física |
dc.subject.lcsh | Hydrogen |
dc.subject.lcsh | Cobalt catalysts |
dc.subject.other | Hydrogen |
dc.subject.other | Ethanol reforming |
dc.subject.other | Bioethanol |
dc.subject.other | Cobalt catalyst |
dc.subject.other | Hydrotalcite-derived catalyst |
dc.subject.other | Honeycomb |
dc.title | Cobalt hydrotalcites as catalysts for bioethanol steam reforming. The promoting effect of potassium on catalyst activity and long-term stability |
dc.type | Article |
dc.subject.lemac | Hidrogen |
dc.subject.lemac | Catalitzadors |
dc.contributor.group | Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions |
dc.identifier.doi | 10.1016/j.apcatb.2012.08.006 |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 11211513 |
dc.description.version | Postprint (published version) |
dc.date.lift | 10000-01-01 |
local.citation.author | Espinal, R.; Taboada, E.; Molins, E.; Chimentao, R.; Medina, F.; Llorca, J. |
local.citation.publicationName | Applied catalysis B. Environmental |
local.citation.volume | 127 |
local.citation.startingPage | 59 |
local.citation.endingPage | 67 |
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