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dc.contributor.authorSaez, B
dc.contributor.authorSantana, A
dc.contributor.authorRamírez-Llodra, E.
dc.contributor.authorMaçaira Nogueira, Jose Miguel Lopes
dc.contributor.authorLedesma Rodriguez, Cristian
dc.contributor.authorLlorca Piqué, Jordi
dc.contributor.authorLarrayoz Iriarte, María Angeles
dc.contributor.otherUniversitat Politècnica de Catalunya. Institut de Tècniques Energètiques
dc.date.accessioned2014-11-28T10:30:37Z
dc.date.created2014-09-01
dc.date.issued2014-09-01
dc.identifier.citationSaez, B. [et al.]. Vegetable oil tansesterification in supercritical conditions using Co-solvent carbon dioxide over solid catalysts: A screening study. "Energy and fuels", 01 Setembre 2014, vol. 28, núm. 9, p. 6006-6011.
dc.identifier.issn0887-0624
dc.identifier.urihttp://hdl.handle.net/2117/24879
dc.description.abstractThe transesterification reaction employing supercritical methanol and carbon dioxide used as a co-solvent in the presence of several heterogeneous solid acid catalysts was investigated. The solid acid catalysts were prepared by impregnation methods, with appropriate precursors over magnesium aluminum silicate (cordierite). The catalysts tested were CeO2, WO3, ZnO, ZrO2, ZrO2-SO42-, mixed oxides (50-5096, w/w) WO3- ZrO2, CeO2-ZrO2, ZnO-La2O3, and Al2O3. Reaction tests were conducted at 200 degrees C and 20 MPa under the condition of 25:1 methanol/oil ratio at a space velocity of 4 mm with a fixed-bed continuous flow reactor containing ca. 5 g of catalyst. The best catalytic performance was obtained over ZrO2-SO42- with a yield toward fatty acid methyl esters (FAMEs) of 98%. This value is better to that obtained over the commercial catalyst Nafion SAC-13 (94%). The direct correlation between the conversion and catalyst total acidity was non-existent, but a positive effect of strong acid sites is evidenced.
dc.format.extent6 p.
dc.language.isoeng
dc.publisherAmerican Chemical Society (ACS)
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Energies::Recursos energètics renovables
dc.subject.lcshMethanol
dc.subject.lcshCatalysts
dc.subject.otherBiodiesel fuel production
dc.subject.otherFixed-bed reactor
dc.subject.otherSoybean
dc.subject.otherMethanol
dc.titleVegetable oil tansesterification in supercritical conditions using Co-solvent carbon dioxide over solid catalysts: A screening study
dc.typeArticle
dc.subject.lemacMetanol
dc.subject.lemacCatalitzadors
dc.contributor.groupUniversitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions
dc.contributor.groupUniversitat Politècnica de Catalunya. FLUIDS - Enginyeria de Fluids
dc.identifier.doi10.1021/ef5006786
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac15251969
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
local.citation.authorSaez, B.; Santana, A.; Ramírez-Llodra, E.; Maçaira, J.; Ledesma, C.; Llorca, J.; Larrayoz, M.
local.citation.publicationNameEnergy and fuels
local.citation.volume28
local.citation.number9
local.citation.startingPage6006
local.citation.endingPage6011


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