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Porous aluminosilicates as acid catalysts for glucose dehydration to 5-hydroxymethylfurfural
dc.contributor.author | Moreno Recio, Mercedes | |
dc.contributor.author | Moreno-Tost, Ramón | |
dc.contributor.author | Mérida-Robles, Josefa María | |
dc.contributor.author | Santamaría-González, José | |
dc.contributor.author | Maireles-Torres, Pedro Jesús | |
dc.date.accessioned | 2015-05-12T11:33:21Z | |
dc.date.available | 2015-05-12T11:33:21Z | |
dc.date.created | 2015 | |
dc.date.issued | 2015-05-12 | |
dc.identifier.uri | http://hdl.handle.net/10630/9758 | |
dc.description.abstract | In the present work, the catalytic behavior of micro- and mesoporous aluminosilicates in glucose dehydration is compared. In this sense, different commercial zeolites (Beta, Y and ZSM-5, in their protonic form) and aluminum-doped mesoporous MCM-41 silica have been characterized by using different physico-chemical techniques and the dehydration of glucose has been studied by using bi-phasic systems, where the influence of experimental variables, such as nature of co-solvent, inorganic salt addition, catalyst loading and temperature and time reaction, has been optimized. Concerning the catalytic behavior, by using a biphasic water/MIBK as reaction medium and a 30 wt.% of the 10Al-MCM catalyst with respect to the substrate weight (glucose), 87 % of glucose conversion and 36 % of HMF yield were attained at 195ºC after 150 min of reaction time. However, a very positive effect was observed by using a sodium chloride aqueous solution. The large pore dimensions of aluminium doped MCM-41 silica and H-Beta catalysts together with their high acidity, with both Brönsted and Lewis centres, have led to very active acid catalysts in the dehydration of glucose to HMF. Thus, by using a biphasic water/MIBK solution, after addition of a 20 wt% NaCl, the catalytic activity is largely improved, attaining glucose conversion values higher than 94 % and 70 % of HMF yields, in a short reaction time (30 min). Moreover, no levulinic acid nor furfural were detected. | es_ES |
dc.description.sponsorship | Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech | es_ES |
dc.language.iso | eng | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.subject | Catálisis heterogénea | es_ES |
dc.subject | Silicatos de aluminio | es_ES |
dc.subject.other | HMF | es_ES |
dc.subject.other | Heterogeneous catalysis | es_ES |
dc.subject.other | Aluminosilicate | es_ES |
dc.subject.other | Biorefinery | es_ES |
dc.subject.other | Biomass | es_ES |
dc.subject.other | Carbohydrate | es_ES |
dc.title | Porous aluminosilicates as acid catalysts for glucose dehydration to 5-hydroxymethylfurfural | es_ES |
dc.type | info:eu-repo/semantics/conferenceObject | es_ES |
dc.centro | Facultad de Ciencias | es_ES |
dc.relation.eventtitle | Third International Sumposium on Green Chemistry | es_ES |
dc.relation.eventplace | La Rochelle (Francia) | es_ES |
dc.relation.eventdate | 3 mayo 2015 | es_ES |
dc.identifier.orcid | http://orcid.org/0000-0002-7610-6042 | es_ES |