| dc.contributor | | en-US |
| 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 | 2019-04-16T16:42:47Z | |
| dc.date.available | 2019-04-16T16:42:47Z | |
| dc.identifier | https://www.jcchems.com/index.php/JCCHEMS/article/view/118 | |
| dc.identifier.uri | http://revistaschilenas.uchile.cl/handle/2250/42360 | |
| 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 | https://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 | http://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.subject | Alkali Meta; Zirconia; Heterogeneous Catalysts; Transesterification; 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 | |
| dc.type | | en-US |
