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Pontevedra (España)
2015
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18 al 20 de noviembre de 2015
Pazo da Cultura de Pontevedra
Galicia (España)
XXI ENCONTRO GALEGO‐PORTUGUÉS DE QUÍMICA Noviembre 2015 Coordinador Editorial Antonio Macho Senra Edita Colegio Oficial de Químicos de Galicia Rúa Urzaiz, 1 – 2º dcha. 36201 Vigo (Pontevedra) www.colquiga.org Portada Imagen: Designed by Freepik.com Tirada 250 Ejemplares Imprime Diputación Provincial de Pontevedra Depósito Legal VG 683‐2015 ISBN 978‐84‐608‐3441‐0 Este libro de comunicaciones y conferencias, presentadas en el XXI Encontro Galego‐Portugués de Química, ha sido editado con el patrocinio de la Diputación Provincial de Pontevedra. Catalogación recomendada Libro de resúmenes del XXI Encontro Galego‐Portugués de Química Pazo da Cultura de Pontevedra (España) 2015 © Colegio Oficial de Químicos de Galicia
Derechos reservados. Prohibida la reproducción de este libro por cualquier medio, total o parcialmente, sin permiso expreso del editor.
El coordinador editorial declara que el contenido de los resúmenes científicos es de la entera responsabilidad de los respectivos autores.
XXI ENCONTRO GALEGO‐PORTUGUÉS DE QUÍMICA ____________________________________________________________________ CAT 05 Gold supported on mesoporous carbon as ultraselective bifunctional catalysts for direct conversion of cellobiose to gluconic acid. CAT 06 Hydrophobicity in catalysis for wet peroxide oxidation
CAT 07 Aerogeles de carbon dopados con nanoparticulas de Co(0) en la sintesis eficiente y selectiva de heterociclos nitrogenados
CAT 08 Sintesis de β‐aminocetonas por reacción de Mannich modificada usando arcillas ácidas como catalizadores
CAT 09 Production of biodiesel through esterification catalyzed by ionic liquids CAT 10 Síntesis de quinolinas polisustituidas promovida por nanocatalizadores
basados en aerogeles de carbón dopados con metales de transición
Educación y Enseñanza de la Química
EDU 01 La resolución de problemas como actividad en la docencia de la Química de los grados en Ingeniería Eléctrica y en Ingeniería Electrónica Industrial y Automática en el marco del Espacio Europeo de Educación Superior
EDU 02 Práctica virtual de Laboratorio de Química: Calorimetría (determinación del calor específico del aluminio)
Ingeniería y Química Industrial
IND 01 Preparative Separation of Multicomponent Mixtures by Simulated Moving Bed Liquid Chromatography
IND 02 Evolución del contenido de azufre en las especificaciones del gasóleo de automoción en España, 1975‐2010
IND 03 Resistência de um geocompósito de PP/PET à ação de líquidos
IND 04 Problemas detectados en aplicaciones termográficas en ITV´s como apoyo en la prevención de riesgos
IND 05 Polyols production from lignocellulosic material applying liquefaction processes
IND 06 Diseño de pretratamiento para fermentación ácida de residuos IND 07 Almond shell‐based polyols through oxypropylation reaction
IND 08 Estudio de la efectividad de un termofluido constituido con un inhibidor de corrosión base etilenglicol
IND 09 Influencia de la contaminación por combustible sobre la viscosidad de un aceite lubricante para motores de combustión interna marinos
IND 10 Comparación cualitativa del método electrolítico con distintos métodos de recuperación piezas de acero oxidadas en lanchas de instrucción
XXI ENCONTRO GALEGO‐PORTUGUÉS DE QUÍMICA CAT 09
Production of biodiesel through esterification catalyzed by ionic liquids
Bárbara Meireles, António Ribeiro, Ana Maria Queiroz and Paulo Brito
Department of Chemical and Biological Technology, School of Technology and Management, Polytechnic Institute of Bragança, Campus de Santa Apolónia, PO Box 1134, 5301-857 Bragança, Portugal
In recent decades, there is a growing interest in the development of alternative technologies to the oil economy, based on so-called renewable energy sources. One of the possible solutions is a biofuel usable in compression-ignition engines (or diesel engines), produced from biomass rich in fats and oils. Thus, a wide range of raw materials can be used in the production of biodiesel, from the application of edible commercial oils to the recycling of waste oils.
Biodiesel, which chemically is composed by a mix of fatty acid methyl esters (FAME’s), is usually produced by transesterification of the triglycerides contained in vegetable oils and animal fats, in the presence of extensive types of homogeneous or heterogeneous catalysts. Alkali catalysts provide high yields for the production of biodiesel, in relatively mild conditions, but require a previous neutralization of the oils. Thus, the usage of high acidic raw materials may introduce problems which necessarily would affect negatively the quality of the biodiesel produced. Particularly, resorting to second generation triglyceride sources that do not compete with the food market like waste cooking oils, which usually feature high levels of free fatty acids (FFA’s), can put problems in the classic process of production of biodiesel through alkaline transesterification. However, these problems can be partially overcome by the use of catalysts, such as ionic liquids (IL’s) that promote also the reactions of esterification of FFA’s to FAME’s.
In fact, recently it has been observed an increased interest in the application of IL’s in multiple fields, mainly as solvents1 and catalysts2-4 to a wide variety of reaction systems. In
this work, it is presented a study of the performance of the acidic IL, 1-butyl-3-methylimidazolium hydrogen sulfate ([BMIM]HSO4), as a catalyst for the esterification of a
mix of fatty acids (mainly composed by oleic acid) to the respective FAME’s, using methanol, at a relatively low temperature (65 ºC), with reaction times ranging from 5-6 hours.
Multiple reaction batches were designed varying oleic acid/methanol mole ratio and the mass of catalyst. On the other hand, the reaction performance is monitored by, the estimate of the reaction yield, measuring the final product acidic value through volumetric titration, and the assessment of total FAME content of the biodiesel product by Gas Chromatography (GC).
The usage of GC makes possible the identification, and consequent quantification, of the several FAME’s present in the produced biodiesel. In the conditions described above the typical reaction yields reach values as high as 90%, and the total weight content of FAME’s in the biodiesel product, ranges between 80-90%. Thus, it is possible to sustain that the studied ionic liquid ([BMIM]HSO4) proves to be a promising possibility for the esterification
reaction catalysis, and a viable alternative for the production of biodiesel.
References
(1) Fauzi, A.H.M.; Amin, N.A.S. Renewable and Sustainable Energy Reviews 2012, 16, 5770. (2) Guo, F.; Fang, Z.; Tian, X.-F.; Long, Y.-D.; Jiang, L.-Q. Bioresource Technology 2011, 102, 6469. (3) Fauzi, A.H.M.; Amin, N.A.S.; Mat, R. Applied Energy 2014, 114, 809.
(4) Li, J.; Peng, X.; Luo, M.; Zhao, C.-J.; Gu, C.-B.; Zu, Y.-G.; Fu, Y.-J. Applied Energy 2014, 115, 438.
ORAL
XXI ENCONTRO GALEGO‐PORTUGUÉS DE QUÍMICA ÍNDICE DE AUTORES Acuña Barros, Ángel ... QF 03 Albuquerque, Joao ... NN 06 Almeida, Francisca... SAU 08 Andrade Garda, José Manuel ...AMB 09 Aran Ferreiro, Diego ...AMB 03 Arufe, Santiago ...AMA 20 Barbosa, Mário Adolfo ... CP 2 Barbosa, Marta...AMB 11 Basto de Lima, Maria Gabriela ...AMA 14 Bolaño Losada, Cristian ... BB 01 Brito, Paulo... CAT 09 Cabral, Maria de Fátima ... SAU 13 Caldeira Ferreira, Leonor...AMB 10 Canle López, Moises ... FOT 03 Carballido Piñeiro, Rocío ...QINO 06 Carruço Laranjeira, Cristina ... AMA 07 Castroagudin Campos, Marina ... QO 02 Cavalcanti, Suellen ... NN 02 Chantada Vázquez, Maria del Pilar ... NN 09 Cilla García, Diego Augusto ...AMB 04 Cobas Roade, Marta ... BB 04 Coelho, Ainhoa Teresa ... SAU 01 Colunga Seara, Roberto... QO 03 Couto, Rosa ... QA 05 Couto Carneiro Vieira, Alexandre... NN 01 Cunha, Edite ... QA 01 Da Silva, Eliana ... FOT 01 De Almeida Ferraz, Nadja Vanessa ... BB 03 De la Peña Lastra, Saúl ...AMB 14 De Oliveira Acevedo, Ana Marta ... SOS 01 Dias Fernandes, Tânia Catarina... SAU 17 Díez Rodríguez, Elena ...AMB 05 Díez Sarabia, Aída...AMB 02 Dourado Martins, Tiago ... SAU 18 Enterría, Marina ... QF 07 Espíndola Romero, Ricardo ...SOLO 02 Faria Raimundo, Antonio Jose ... AMA 01 Fernandez, Ángel Manuel ... QF 04 Fernández Amado, María... AMB 12 Fernández Feal, Maria Luisa ... IND 09 Fernández Figueiras, Adolfo ...QINO 01 Fernández Marcos, Maria Luisa ...SOLO 01 Fernández Solís, José M. ...EDU 01 Figueiredo, Jose L. ... CAT 04
