Avaliação da interesterificação catalítica de óleo de macaúba com acetato de metila
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações do UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/12929 |
Resumo: | The world concern about the increasing of energy demand, depletion of fossil fuel reserves and global warming aroused interest in biodiesel production. Commonly produced through basic homogeneous transesterification, the increase in biodiesel production resulted in an overproduction of glycerol. Thus, the aim of this study was to promote and evaluate interesterification reaction of macaw oil with methyl acetate over different heterogeneous catalysts (γ-alumina, zeolite HY, niobium phosphate and niobic acid), for production of fatty acid methyl esters (FAME) and triacetin, compound with high added value, considered an additive to biodiesel, instead of glycerol. The catalyst γ-alumina presented superior results when the reaction conditions were 250 °C, 5% mass of catalyst and molar ratio methyl acetate to oil of 30:1 and in 1 hour of reaction it was reached 54.07% (w/w) of FAME and triacetin content. At these conditions the catalyst was recovered and reused without treatment for at least 5 cycles without significant catalytic activity loss. Also, the influence of temperature (225 °C to 300 °C), catalyst mass (2 to 10% of oil mass fed) and methyl acetate to oil molar ratio (10:1 to 40:1) were evaluated. FAME and triacetin content of 48.96% (w/w) and 1.84% (w/w) were achieved for 300 °C, 2% of γ-alumina and molar ratio of 20:1, in 1 hour of reaction which corresponds to 82.5% of conversion considering the convertibility of macaw oil to esters and triacetin of 61.6% (w/w). The catalyst was recovered and reused without treatment for at least 4 cycles and did not present significant catalytic activity loss. |
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2018-04-11T14:41:49Z2018-04-11T14:41:49Z2017-01-27http://repositorio.ufsm.br/handle/1/12929The world concern about the increasing of energy demand, depletion of fossil fuel reserves and global warming aroused interest in biodiesel production. Commonly produced through basic homogeneous transesterification, the increase in biodiesel production resulted in an overproduction of glycerol. Thus, the aim of this study was to promote and evaluate interesterification reaction of macaw oil with methyl acetate over different heterogeneous catalysts (γ-alumina, zeolite HY, niobium phosphate and niobic acid), for production of fatty acid methyl esters (FAME) and triacetin, compound with high added value, considered an additive to biodiesel, instead of glycerol. The catalyst γ-alumina presented superior results when the reaction conditions were 250 °C, 5% mass of catalyst and molar ratio methyl acetate to oil of 30:1 and in 1 hour of reaction it was reached 54.07% (w/w) of FAME and triacetin content. At these conditions the catalyst was recovered and reused without treatment for at least 5 cycles without significant catalytic activity loss. Also, the influence of temperature (225 °C to 300 °C), catalyst mass (2 to 10% of oil mass fed) and methyl acetate to oil molar ratio (10:1 to 40:1) were evaluated. FAME and triacetin content of 48.96% (w/w) and 1.84% (w/w) were achieved for 300 °C, 2% of γ-alumina and molar ratio of 20:1, in 1 hour of reaction which corresponds to 82.5% of conversion considering the convertibility of macaw oil to esters and triacetin of 61.6% (w/w). The catalyst was recovered and reused without treatment for at least 4 cycles and did not present significant catalytic activity loss.A preocupação mundial com o aumento da demanda de energia, o esgotamento das reservas de combustíveis fósseis e o aquecimento global despertaram interesse na produção de biodiesel. Geralmente produzido por transesterificação homogênea básica, o aumento na produção de biodiesel resultou em uma superprodução de glicerol. Assim, o objetivo deste estudo foi promover e avaliar a reação de interesterificação do óleo de macaúba com acetato de metila sobre diferentes catalisadores heterogêneos (γ-alumina, zeólita HY, fosfato de nióbio e ácido nióbico), para a produção de ésteres metílicos de ácidos graxos (EMAGs) e triacetina, composto com alto valor agregado, considerado um aditivo ao biodiesel, ao contrário do glicerol. O catalisador γ-alumina apresentou resultados superiores quando as condições de reação foram de 250 ° C, 5% de massa de catalisador e razão molar de acetato de metila para óleo de 30: 1 e, em 1 hora de reação, foram obtidos de 54,07% de teor (m/m) de EMAG e de triacetina. Nestas condições, o catalisador foi recuperado e reutilizado sem tratamento pelo menos 5 ciclos sem perda significativa de atividade catalítica. Também foram avaliadas a influência da temperatura (225 ° C a 300 ° C), da massa de catalisador (2 a 10% da massa de óleo alimentada) e da razão molar de acetato de metila para óleo (10: 1 a 40: 1). Foram obtidos valores de EMAGs e triacetina de 48,96% (m/m) e 1,84% (m/m) para 300 ° C, 2% de γ-alumina e razão molar de 20:1, em 1 hora de reação, o que corresponde a 82,5% de conversão considerando a conversibilidade do óleo de macaúba a ésteres e triacetina de 61,6% (m/m). O catalisador foi recuperado e reutilizado sem tratamento pelo menos 4 ciclos e não apresentou significativa perda de atividade catalítica.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESporUniversidade Federal de Santa MariaCentro de TecnologiaPrograma de Pós-Graduação em Engenharia QuímicaUFSMBrasilEngenharia QuímicaAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessBiodieselTriacetinaCatálise heterogêneaAluminaNióbioBiodieselTriacetinHeterogeneous catalysisAluminaNiobiumCNPQ::ENGENHARIAS::ENGENHARIA QUIMICAAvaliação da interesterificação catalítica de óleo de macaúba com acetato de metilaEvaluation of catalytic interesterification of macaw oil with methyl acetateinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisCastilhos, Fernanda dehttp://lattes.cnpq.br/4590978604104577Muniz, Ana Rosa Costahttp://lattes.cnpq.br/6878938083195939Salau, Nina Paula Gonçalveshttp://lattes.cnpq.br/4234840503539989http://lattes.cnpq.br/2695499577647323Ribeiro, Jéssica dos Santos300600000006600340e815f-99e3-423d-b9d8-4333d082cb0fe0ae97ee-3e27-46db-8347-f03cbb3c4323074ea239-da57-420b-96ad-ff1db50c3ba5aa69464a-8382-4a16-aecf-67804cf29069reponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMCC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8804http://repositorio.ufsm.br/bitstream/1/12929/2/license_rdfc1efe8e24d7281448e873be30ea326ffMD52ORIGINALDIS_PPGEQ_2017_RIBEIRO_JESSICA.pdfDIS_PPGEQ_2017_RIBEIRO_JESSICA.pdfDissertação de Mestradoapplication/pdf1811505http://repositorio.ufsm.br/bitstream/1/12929/1/DIS_PPGEQ_2017_RIBEIRO_JESSICA.pdf8db0736719a2e1b3396d77f024352479MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-816http://repositorio.ufsm.br/bitstream/1/12929/3/license.txtf8fcb28efb1c8cf0dc096bec902bf4c4MD53TEXTDIS_PPGEQ_2017_RIBEIRO_JESSICA.pdf.txtDIS_PPGEQ_2017_RIBEIRO_JESSICA.pdf.txtExtracted texttext/plain173609http://repositorio.ufsm.br/bitstream/1/12929/4/DIS_PPGEQ_2017_RIBEIRO_JESSICA.pdf.txt889fe6f593150360084667645f02dc61MD54THUMBNAILDIS_PPGEQ_2017_RIBEIRO_JESSICA.pdf.jpgDIS_PPGEQ_2017_RIBEIRO_JESSICA.pdf.jpgIM Thumbnailimage/jpeg4457http://repositorio.ufsm.br/bitstream/1/12929/5/DIS_PPGEQ_2017_RIBEIRO_JESSICA.pdf.jpg69b784559840ea804faa27649d2d0815MD551/129292018-04-11 11:41:50.094oai:repositorio.ufsm.br:1/12929Q3JlYXRpdmUgQ29tbW9ucw==Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2018-04-11T14:41:50Biblioteca Digital de Teses e Dissertações do UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.por.fl_str_mv |
Avaliação da interesterificação catalítica de óleo de macaúba com acetato de metila |
dc.title.alternative.eng.fl_str_mv |
Evaluation of catalytic interesterification of macaw oil with methyl acetate |
title |
Avaliação da interesterificação catalítica de óleo de macaúba com acetato de metila |
spellingShingle |
Avaliação da interesterificação catalítica de óleo de macaúba com acetato de metila Ribeiro, Jéssica dos Santos Biodiesel Triacetina Catálise heterogênea Alumina Nióbio Biodiesel Triacetin Heterogeneous catalysis Alumina Niobium CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
title_short |
Avaliação da interesterificação catalítica de óleo de macaúba com acetato de metila |
title_full |
Avaliação da interesterificação catalítica de óleo de macaúba com acetato de metila |
title_fullStr |
Avaliação da interesterificação catalítica de óleo de macaúba com acetato de metila |
title_full_unstemmed |
Avaliação da interesterificação catalítica de óleo de macaúba com acetato de metila |
title_sort |
Avaliação da interesterificação catalítica de óleo de macaúba com acetato de metila |
author |
Ribeiro, Jéssica dos Santos |
author_facet |
Ribeiro, Jéssica dos Santos |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Castilhos, Fernanda de |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/4590978604104577 |
dc.contributor.referee1.fl_str_mv |
Muniz, Ana Rosa Costa |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/6878938083195939 |
dc.contributor.referee2.fl_str_mv |
Salau, Nina Paula Gonçalves |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/4234840503539989 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/2695499577647323 |
dc.contributor.author.fl_str_mv |
Ribeiro, Jéssica dos Santos |
contributor_str_mv |
Castilhos, Fernanda de Muniz, Ana Rosa Costa Salau, Nina Paula Gonçalves |
dc.subject.por.fl_str_mv |
Biodiesel Triacetina Catálise heterogênea Alumina Nióbio |
topic |
Biodiesel Triacetina Catálise heterogênea Alumina Nióbio Biodiesel Triacetin Heterogeneous catalysis Alumina Niobium CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
dc.subject.eng.fl_str_mv |
Biodiesel Triacetin Heterogeneous catalysis Alumina Niobium |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
description |
The world concern about the increasing of energy demand, depletion of fossil fuel reserves and global warming aroused interest in biodiesel production. Commonly produced through basic homogeneous transesterification, the increase in biodiesel production resulted in an overproduction of glycerol. Thus, the aim of this study was to promote and evaluate interesterification reaction of macaw oil with methyl acetate over different heterogeneous catalysts (γ-alumina, zeolite HY, niobium phosphate and niobic acid), for production of fatty acid methyl esters (FAME) and triacetin, compound with high added value, considered an additive to biodiesel, instead of glycerol. The catalyst γ-alumina presented superior results when the reaction conditions were 250 °C, 5% mass of catalyst and molar ratio methyl acetate to oil of 30:1 and in 1 hour of reaction it was reached 54.07% (w/w) of FAME and triacetin content. At these conditions the catalyst was recovered and reused without treatment for at least 5 cycles without significant catalytic activity loss. Also, the influence of temperature (225 °C to 300 °C), catalyst mass (2 to 10% of oil mass fed) and methyl acetate to oil molar ratio (10:1 to 40:1) were evaluated. FAME and triacetin content of 48.96% (w/w) and 1.84% (w/w) were achieved for 300 °C, 2% of γ-alumina and molar ratio of 20:1, in 1 hour of reaction which corresponds to 82.5% of conversion considering the convertibility of macaw oil to esters and triacetin of 61.6% (w/w). The catalyst was recovered and reused without treatment for at least 4 cycles and did not present significant catalytic activity loss. |
publishDate |
2017 |
dc.date.issued.fl_str_mv |
2017-01-27 |
dc.date.accessioned.fl_str_mv |
2018-04-11T14:41:49Z |
dc.date.available.fl_str_mv |
2018-04-11T14:41:49Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/masterThesis |
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masterThesis |
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por |
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por |
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300600000006 |
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600 |
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Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
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Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
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openAccess |
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Universidade Federal de Santa Maria Centro de Tecnologia |
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Programa de Pós-Graduação em Engenharia Química |
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UFSM |
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Brasil |
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Engenharia Química |
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Universidade Federal de Santa Maria Centro de Tecnologia |
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