ZrO2-supported alkali metal (Li, Na, K) catalysts for biodiesel production

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dc.contributor.authorAguila, Gonzalo
dc.contributor.authorSalinas, Daniela
dc.contributor.authorJiménez, Romel
dc.contributor.authorGuerrero, Sichem
dc.contributor.authorAraya, Paulo
dc.date.accessioned2023-11-29T12:11:11Z
dc.date.available2023-11-29T12:11:11Z
dc.date.issued2016
dc.descriptionIndexación: Scopus.es
dc.description.abstractWe studied the effect of the alkali metal type (Li, Na, and K) and the calcination temperature (500, 600 and 700 °C) in the activity for biodiesel production of catalysts prepared by impregnation method, with constant metal content of 10%w/w using ZrO2 as support. The results of the catalytic activity allowed to find an activity sequence regarding the alkali tested metals: Na > Li > K, with this sequence remaining constant independent of the calcination temperature. The high activity of the Na/ZrO2 system, and slightly lower activity of Li/ZrO2 , can be explained by the fact that higher calcination temperatures promote the formation of alkali-based zirconate species, M2 ZrO3 (M = Na or Li). The presence of these species is correlated with the higher activity of these catalysts, specifically with the Na and Li-based catalyst calcined at high temperatures (600-700 °C). These M2 ZrO3 species show higher basicity respect to other alkali metal oxide species, as was demonstrated with CO2 -TPD results. The higher activity corresponded to 10% Na supported on ZrO2 and calcined at 700 °C, which reached full conversion within just 30 minutes of reaction, which makes this system a promising heterogeneous replacement for the regular homogeneous systems.es
dc.description.urihttps://www-scielo-cl.recursosbiblioteca.unab.cl/scielo.php?script=sci_arttext&pid=S0717-97072016000400017&lng=en&nrm=iso&tlng=en
dc.identifier.citationJournal of the Chilean Chemical Society. Volume 61, Issue 4, Pages 3233 - 3238. 2016es
dc.identifier.doi10.4067/S0717-97072016000400017
dc.identifier.issn0717-9324
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/54229
dc.language.isoenes
dc.publisherSociedad Chilena de Quimicaes
dc.subjectAlkali Metales
dc.subjectZirconiaes
dc.subjectHeterogeneous Catalystses
dc.subjectTransesterificationes
dc.subjectBiodieseles
dc.titleZrO2-supported alkali metal (Li, Na, K) catalysts for biodiesel productiones
dc.typeArtículoes
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