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Sulfonic acid-functionalized aerogels as high resistant to deactivation catalysts for the etherification of glycerol with isobutene
dc.contributor.author | González, Maria Dolores |
dc.contributor.author | Salagre, Pilar |
dc.contributor.author | Taboada Cabellos, Elena |
dc.contributor.author | Llorca Piqué, Jordi |
dc.contributor.author | Molins, E. |
dc.contributor.author | Cesteros, Yolanda |
dc.contributor.other | Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques |
dc.date.accessioned | 2013-06-04T10:10:34Z |
dc.date.created | 2013-06-05 |
dc.date.issued | 2013-06-05 |
dc.identifier.citation | González, M. [et al.]. Sulfonic acid-functionalized aerogels as high resistant to deactivation catalysts for the etherification of glycerol with isobutene. "Applied catalysis B. Environmental", 05 Juny 2013, vol. 136-137, p. 287-293. |
dc.identifier.issn | 0926-3373 |
dc.identifier.uri | http://hdl.handle.net/2117/19492 |
dc.description.abstract | Silica aerogel and lyogel have been successfully sulfonated in one step by a simple post-synthesis method using microwaves as well as conventional heating. The use of microwaves allowed loading higher amounts of sulfonic acid groups in both silicas, according to the higher S/Si atomic ratio determined by XPS, and the higher sulfur content determined by TGA, also exhibiting lower surface area and higher acidity. Sulfonated aerogels showed higher conversion and selectivity to h-GTBE (glycerol di- and tri-ethers) than sulfonated lyogels for the acid-catalyzed etherification of glycerol with isobutene. This was attributed to the higher content of sulfonic acid groups incorporated in aerogel. Microwave-assisted sulfonated aerogel yielded 75% of selectivity to h-GTBE, which can be used as fuel additive, for practically total conversion. Interestingly, larger porosity of aerogel avoided the partial blocking of pores by reaction products observed when other micro- and mesoporous catalysts were tested for this reaction. The combination of high conversion, high selectivity to h-GTBE, practically no formation of undesired di-isobutylenes and very high resistance to catalyst deactivation makes microwave-assisted sulfonic acid functionalized aerogel a promising catalyst for this etherification reaction. |
dc.format.extent | 7 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::Enginyeria química::Química orgànica::Compostos orgànics |
dc.subject | Àrees temàtiques de la UPC::Energies::Recursos energètics no renovables::Gas |
dc.subject.lcsh | Catalysts |
dc.subject.lcsh | Aerogels |
dc.subject.other | Aerogel |
dc.subject.other | Lyogel |
dc.subject.other | Sulfonic acid-functionalization |
dc.subject.other | Microwaves |
dc.subject.other | Glycerol etherification |
dc.subject.other | Deactivation |
dc.title | Sulfonic acid-functionalized aerogels as high resistant to deactivation catalysts for the etherification of glycerol with isobutene |
dc.type | Article |
dc.subject.lemac | Catàlisi |
dc.subject.lemac | Compostos orgànics |
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.2013.02.018 |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 12465018 |
dc.description.version | Postprint (published version) |
dc.date.lift | 10000-01-01 |
local.citation.author | González, M.; Salagre, P.; Taboada, E.; Llorca, J.; Molins, E.; Cesteros, Y. |
local.citation.publicationName | Applied catalysis B. Environmental |
local.citation.volume | 136-137 |
local.citation.startingPage | 287 |
local.citation.endingPage | 293 |
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