ZrO2-SUPPORTED ALKALI METAL (Li, Na, K) CATALYSTS FOR BIODIESEL PRODUCTION

Aguila, Gonzalo; Salinas, Daniela; Jiménez, Romel; Guerrero, Sichem; Araya, Paulo

dc.creator	Aguila, Gonzalo
dc.creator	Salinas, Daniela
dc.creator	Jiménez, Romel
dc.creator	Guerrero, Sichem
dc.creator	Araya, Paulo
dc.date	2016-12-10
dc.date.accessioned	2019-11-13T15:11:32Z
dc.date.available	2019-11-13T15:11:32Z
dc.identifier	http://www.jcchems.com/index.php/JCCHEMS/article/view/118
dc.identifier.uri	https://revistaschilenas.uchile.cl/handle/2250/112550
dc.description	We 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, M2ZrO3 (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 M2ZrO3 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.	en-US
dc.format	application/pdf
dc.language	eng
dc.publisher	Sociedad Chilena de Química	en-US
dc.relation	http://www.jcchems.com/index.php/JCCHEMS/article/view/118/103
dc.rights	Copyright (c) 2017 Gonzalo Aguila, Daniela Salinas, Romel Jiménez, Sichem Guerrero, Paulo Araya	en-US
dc.rights	https://creativecommons.org/licenses/by-nc-sa/4.0	en-US
dc.source	Journal of the Chilean Chemical Society; Vol 61 No 4 (2016): Journal of the Chilean Chemical Society	en-US
dc.source	0717-9707
dc.source	0717-9324
dc.subject	Alkali Meta	en-US
dc.subject	Zirconia	en-US
dc.subject	Heterogeneous Catalysts	en-US
dc.subject	Transesterification	en-US
dc.subject	Biodiesel	en-US
dc.title	ZrO2-SUPPORTED ALKALI METAL (Li, Na, K) CATALYSTS FOR BIODIESEL PRODUCTION	en-US
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion

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