Ionic Liquid Catalyzed Reaction for Biodiesel Production

Roman, Fernanda; Queiroz, Ana; Ribeiro, António E.; Chaves, Eduardo S.; Brito, Paulo

Publication

Ionic Liquid Catalyzed Reaction for Biodiesel Production

2017Conference object

dc.contributor.author	Roman, Fernanda
dc.contributor.author	Queiroz, Ana
dc.contributor.author	Ribeiro, António E.
dc.contributor.author	Chaves, Eduardo S.
dc.contributor.author	Brito, Paulo
dc.date.accessioned	2018-02-21T15:12:16Z
dc.date.available	2018-02-21T15:12:16Z
dc.date.issued	2017
dc.description.abstract	Biodiesel is a promising energy source that could replace petro-diesel. The biodiesel production with the currently employed catalysts presents drawbacks, linked to cost, environmental issues, reaction time, among others. Many researches have been shifted towards finding catalysts that are environmentally benign, allow good conversions, permit the use of low cost feedstock and lead to high quality biodiesel. Ionic Liquids (IL) are a class of catalysts that have been considered for biodiesel production, due to the fact that they may surpass some of the downsides of classical catalysts. Thus, the goal of this study is to optimize the conversion of the esterification reaction of oleic acid with methanol, by estimating the optimum conditions, using the IL 1-methylimidazolium hydrogen sulfate as catalyst, and applying a Response Surface Methodology (RSM). The experiments were delineated using the Box-Behnken Design (BBD), with 4 factors in 3 levels, leading to 27 experiments. IL, oleic acid and methanol were charged to the reactor and reaction was performed with reflux, under the determined conditions. After the reaction, the mixture was kept under refrigeration until the phases were able to be separated. The oleic acid conversion was estimated by comparing the initial acidity of the oleic acid sample and the final acidity of the biodiesel phase, according to a procedure adapted from EN 14104. The p-value obtained for the regression is smaller than 0.05 and the lack of fit is estimated as 0.265, both acquired through the Analysis of Variance (ANOVA). The regression fit was determined as R2=0.986, placing the model as reasonable and statistically reliable. In general, increasing the value of the factor also increases the response. The order of importance is: C > D > C2 > A > D2 > CD > A2 > BC > A*C. The reaction temperature (B) did not greatly influence the response, being statistically irrelevant to this investigation. The greater value for conversion is obtained when both parameters are set to +1. Similar analysis can be made to all interactions between factors. The best result was obtained when all 4 factors were set to their maximum value, achieving a conversion of 94.8%.	pt_PT
dc.description.version	info:eu-repo/semantics/publishedVersion	pt_PT
dc.identifier.citation	Roman, Fernanda F.; Queiroz, A.M.; Ribeiro, António E.; Chaves, Eduardo S.; Brito, Paulo (2017). Ionic Liquid Catalyzed Reaction for Biodiesel Production. In XXIII Encontro Galego-Portugues de Química. Ferrol. ISBN 978-84-697-7356-7	pt_PT
dc.identifier.isbn	978-84-697-7356-7
dc.identifier.uri	http://hdl.handle.net/10198/15890
dc.language.iso	eng	pt_PT
dc.peerreviewed	yes	pt_PT
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	pt_PT
dc.title	Ionic Liquid Catalyzed Reaction for Biodiesel Production	pt_PT
dc.type	conference object
dspace.entity.type	Publication
oaire.citation.conferencePlace	Ferrol	pt_PT
oaire.citation.title	XXIII Encontro Galego-Portugues de Química	pt_PT
person.familyName	Roman
person.familyName	Queiroz
person.familyName	Ribeiro
person.familyName	Brito
person.givenName	Fernanda
person.givenName	Ana
person.givenName	António E.
person.givenName	Paulo
person.identifier.ciencia-id	EE1B-DAA7-D0BD
person.identifier.ciencia-id	2611-D40C-3472
person.identifier.ciencia-id	3211-D5B0-870D
person.identifier.ciencia-id	A31A-D845-A6E2
person.identifier.orcid	0000-0001-5360-5298
person.identifier.orcid	0000-0003-4761-0618
person.identifier.orcid	0000-0003-4569-7887
person.identifier.orcid	0000-0003-1805-0252
person.identifier.rid	O-8367-2015
person.identifier.scopus-author-id	23390701300
person.identifier.scopus-author-id	31168231800
rcaap.rights	openAccess	pt_PT
rcaap.type	conferenceObject	pt_PT
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