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Master's Dissertation
DOI
https://doi.org/10.11606/D.75.2009.tde-10032010-095835
Document
Author
Full name
Guilherme Carvalho Tremiliosi
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2009
Supervisor
Committee
Rodrigues Filho, Ubirajara Pereira (President)
Marques, Clelia Mara de Paula
Curvelo, Antonio Aprigio da Silva
Title in Portuguese
Estudo comparativo de catalisadores ácidos para a produção de biodiesel
Keywords in Portuguese
Biodiesel
Catalisador heterogêneo
Fosfotungstato
Ormosil
Superácidos
Abstract in Portuguese
Para que o processo de produção de biodiesel se torne auto-sustentado, ou seja, socialmente, ecologicamente e economicamente viáveis, alguns aspectos químicos ainda precisam ser estudados e aprimorados. Dentre estes, dois são relevantes: alta eficiência no rendimento da reação e o uso de catalisadores de maneira ecologicamente responsável. Para atendê-los é necessário o uso de catalisadores eficientes, robustos, e facilmente manipuláveis com baixo impacto ao meio ambiente. Para atingir tais objetivos, foi estudado o uso de diferentes catalisadores heterogêneos e métodos analíticos para a determinação do rendimento e caracterização dos produtos formados pela reação de esterificação do ácido oléico, principal componente do óleo de soja, utilizando-se o Etanol e um catalisador heterogêneo à base de sílica, o ormosil. A reação de transesterificação do óleo de soja também foi estudada utilizando-se o Etanol e catalisadores ácidos homogêneos e heterogêneos.
Title in English
Comparative study of acid catalysts for biodiesel production
Keywords in English
Biodiesel
Heterogeneous catalysts
Ormosil
Phosphotungstate
Superacids
Abstract in English
For the biodiesel production process to become self-sustaining, namely, sociably, environmentally and economically viable some chemical aspects have to be studied and improved. Among all of its aspects, two of them are relevant: high efficiency on the reaction yield and the use of catalysts in an environmentally responsible way. To attend to these, the use of, robust and easily manipulated with low environmental impact efficient catalysts is necessary. In order to attain to these objectives, the use of different heterogeneous catalysts and analytical methods for the determination of the yield and characterization of the products formed by the esterification reaction of oleic acid, the main component of soy bean oil, using ethanol and a silica based heterogeneous catalyst, the ormosil, was be studied. The transesterification reaction of the soy oil was also studied, making use of ethanol and homogeneous and heterogeneous acid catalysts.
 
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Publishing Date
2010-06-30
 
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