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

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 activi...

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Autores principales:	AGUILA,GONZALO, SALINAS,DANIELA, JIMÉNEZ,ROMEL, GUERRERO,SICHEM, ARAYA,PAULO
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2016
Materias:	Alkali Metal Zirconia Heterogeneous Catalysts Transesterification Biodiesel
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072016000400017
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spelling	oai:scielo:S0717-970720160004000172017-01-16ZrO2-SUPPORTED ALKALI METAL (Li, Na, K) CATALYSTS FOR BIODIESEL PRODUCTIONAGUILA,GONZALOSALINAS,DANIELAJIMÉNEZ,ROMELGUERRERO,SICHEMARAYA,PAULO Alkali Metal Zirconia Heterogeneous Catalysts Transesterification Biodiesel 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.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.61 n.4 20162016-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072016000400017en10.4067/S0717-97072016000400017
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Alkali Metal Zirconia Heterogeneous Catalysts Transesterification Biodiesel
spellingShingle	Alkali Metal Zirconia Heterogeneous Catalysts Transesterification Biodiesel AGUILA,GONZALO SALINAS,DANIELA JIMÉNEZ,ROMEL GUERRERO,SICHEM ARAYA,PAULO ZrO2-SUPPORTED ALKALI METAL (Li, Na, K) CATALYSTS FOR BIODIESEL PRODUCTION
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.
author	AGUILA,GONZALO SALINAS,DANIELA JIMÉNEZ,ROMEL GUERRERO,SICHEM ARAYA,PAULO
author_facet	AGUILA,GONZALO SALINAS,DANIELA JIMÉNEZ,ROMEL GUERRERO,SICHEM ARAYA,PAULO
author_sort	AGUILA,GONZALO
title	ZrO2-SUPPORTED ALKALI METAL (Li, Na, K) CATALYSTS FOR BIODIESEL PRODUCTION
title_short	ZrO2-SUPPORTED ALKALI METAL (Li, Na, K) CATALYSTS FOR BIODIESEL PRODUCTION
title_full	ZrO2-SUPPORTED ALKALI METAL (Li, Na, K) CATALYSTS FOR BIODIESEL PRODUCTION
title_fullStr	ZrO2-SUPPORTED ALKALI METAL (Li, Na, K) CATALYSTS FOR BIODIESEL PRODUCTION
title_full_unstemmed	ZrO2-SUPPORTED ALKALI METAL (Li, Na, K) CATALYSTS FOR BIODIESEL PRODUCTION
title_sort	zro2-supported alkali metal (li, na, k) catalysts for biodiesel production
publisher	Sociedad Chilena de Química
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072016000400017
work_keys_str_mv	AT aguilagonzalo zro2supportedalkalimetallinakcatalystsforbiodieselproduction AT salinasdaniela zro2supportedalkalimetallinakcatalystsforbiodieselproduction AT jimenezromel zro2supportedalkalimetallinakcatalystsforbiodieselproduction AT guerrerosichem zro2supportedalkalimetallinakcatalystsforbiodieselproduction AT arayapaulo zro2supportedalkalimetallinakcatalystsforbiodieselproduction
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ZrO2-SUPPORTED ALKALI METAL (Li, Na, K) CATALYSTS FOR BIODIESEL PRODUCTION

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