S?ntese e caracteriza??o de poli (l?quidos i?nicos) e sua avalia??o em captura e transforma??o de CO2
Ano de defesa: | 2013 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Pontif?cia Universidade Cat?lica do Rio Grande do Sul
|
Programa de Pós-Graduação: |
Programa de P?s-Gradua??o em Engenharia e Tecnologia de Materiais
|
Departamento: |
Faculdade de Engenharia
|
País: |
BR
|
Palavras-chave em Português: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://tede2.pucrs.br/tede2/handle/tede/3246 |
Resumo: | The development of new materials for CO2 capture and transformation is of great importance to the use of fossil resources, preserving the environment. In this context, ionic liquids represent an environmentally friendly alternative, because they have negligible vapor pressure and can be reused. However, their CO2 absorption capacity not surpasses traditional solvents and their use as homogeneous catalysts in transformation processes of CO2 requires additional distillation process which increases the cost. Looking for enhance the application of ILs in these areas, in the present study were synthesized poly(ionic liquid)s (PILs) from polyurethane and the ionic liquid 1-butyl chloride-3-methylimidazolium (BMIM Cl), which were characterized structural (IR, NMR), thermal (DSC, TGA) and morphology (SEM); also nanoparticles of these were synthesized by multiple emulsification followed by solvent evaporation, and also characterized. These materials were evaluated in the process of CO2 capture and transformation of this gas in cyclic carbonate through cycloaddition reaction with propylene oxide. In capture assays, the PILs showed highest sorption capacity of CO2 than the IL precursor (BMIM Cl) and PU departure; the NP obtained for these, although they were obtained aggregated, showed faster rates of sorption. In the carbonation reactions PILs presented propylene oxide conversion values approximate to those obtained for BMIM Cl, moreover were easily separated by precipitation-filtration. Therefore, the PILs evaluated in this study showed positive results for its use in the process of capturing and processing CO2. |
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Einloft, Sandra Mara OliveiraCPF:40315886072http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4787827D1CPF:86241427091http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4351828D6Fern?ndez Rojas, Marisol2015-04-14T13:59:02Z2014-01-132013-12-11http://tede2.pucrs.br/tede2/handle/tede/3246The development of new materials for CO2 capture and transformation is of great importance to the use of fossil resources, preserving the environment. In this context, ionic liquids represent an environmentally friendly alternative, because they have negligible vapor pressure and can be reused. However, their CO2 absorption capacity not surpasses traditional solvents and their use as homogeneous catalysts in transformation processes of CO2 requires additional distillation process which increases the cost. Looking for enhance the application of ILs in these areas, in the present study were synthesized poly(ionic liquid)s (PILs) from polyurethane and the ionic liquid 1-butyl chloride-3-methylimidazolium (BMIM Cl), which were characterized structural (IR, NMR), thermal (DSC, TGA) and morphology (SEM); also nanoparticles of these were synthesized by multiple emulsification followed by solvent evaporation, and also characterized. These materials were evaluated in the process of CO2 capture and transformation of this gas in cyclic carbonate through cycloaddition reaction with propylene oxide. In capture assays, the PILs showed highest sorption capacity of CO2 than the IL precursor (BMIM Cl) and PU departure; the NP obtained for these, although they were obtained aggregated, showed faster rates of sorption. In the carbonation reactions PILs presented propylene oxide conversion values approximate to those obtained for BMIM Cl, moreover were easily separated by precipitation-filtration. Therefore, the PILs evaluated in this study showed positive results for its use in the process of capturing and processing CO2.O desenvolvimento de novos materiais para captura e transforma??o de CO2 ? de grande import?ncia para o aproveitamento dos recursos f?sseis, preservando o meio ambiente. Neste contexto, os l?quidos i?nicos representam uma alternativa ambientalmente amig?vel, pois estes t?m press?o de vapor desprez?vel e podem ser reutilizados. Contudo, a sua capacidade de absor??o de CO2 ainda n?o supera os solventes tradicionais e sua aplica??o como catalisadores homog?neos na transforma??o de CO2 requer processos adicionais de destila??o o qual encarece o processo. Buscando potencializar a aplica??o dos LIs nestas ?reas, no presente trabalho foram sintetizados poli(l?quidos i?nicos) (PLIs), a partir de poliuretano e o liquido i?nico cloreto de 1-butil-3-metil imidazolio (BMIM Cl), os quais foram caracterizados estrutural (IV, RMN), t?rmica (DSC, TGA) e morfologicamente (MEV); al?m disso, foram sintetizadas nanopart?culas destes PLIs, mediante emulsifica??o m?ltipla seguida de evapora??o de solvente, e caracterizadas igualmente. Estes materiais foram avaliados nos processos de captura de CO2 e transforma??o deste g?s em carbonato c?clico, mediante rea??o de cicloadi??o com oxido de propileno. Nos ensaios de captura, os poli(l?quidos i?nicos) apresentaram maior capacidade de sor??o de CO2 do que o LI precursor (BMIM Cl) e o PU de partida; as NP obtidas destes, embora tenham sido obtidas agregadas, apresentaram taxas de sor??o mais r?pidas. Nas rea??es de carbonata??o os PLIs apresentaram valores de convers?o de oxido de propileno aproximados aos obtidos para o BMIM Cl, alem disso foram facilmente separados por precipita??o-filtra??o. Por tanto, os PLIs avaliados neste estudo apresentaram resultados favor?veis para seu uso nos processos de captura e transforma??o de CO2.Made available in DSpace on 2015-04-14T13:59:02Z (GMT). No. of bitstreams: 1 453098.pdf: 474247 bytes, checksum: 10fc86b156f20e478aff23c4bfac8b12 (MD5) Previous issue date: 2013-12-11application/pdfhttp://tede2.pucrs.br:80/tede2/retrieve/11615/453098.pdf.jpgporPontif?cia Universidade Cat?lica do Rio Grande do SulPrograma de P?s-Gradua??o em Engenharia e Tecnologia de MateriaisPUCRSBRFaculdade de EngenhariaENGENHARIA DE MATERIAISCAPTURA DE CARBONOS?NTESE (QU?MICA)L?QUIDOS I?NICOSCNPQ::ENGENHARIASS?ntese e caracteriza??o de poli (l?quidos i?nicos) e sua avalia??o em captura e transforma??o de CO2info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis 7432719344215120122500600 655770572761439785info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da PUC_RSinstname:Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)instacron:PUC_RSTHUMBNAIL453098.pdf.jpg453098.pdf.jpgimage/jpeg3836http://tede2.pucrs.br/tede2/bitstream/tede/3246/3/453098.pdf.jpg7307368208102e7a0c0ca41f604c355bMD53TEXT453098.pdf.txt453098.pdf.txttext/plain18079http://tede2.pucrs.br/tede2/bitstream/tede/3246/2/453098.pdf.txt5af2c5a416847af9204010b29287e9b8MD52ORIGINAL453098.pdfapplication/pdf474247http://tede2.pucrs.br/tede2/bitstream/tede/3246/1/453098.pdf10fc86b156f20e478aff23c4bfac8b12MD51tede/32462015-04-29 20:03:01.833oai:tede2.pucrs.br:tede/3246Biblioteca Digital de Teses e Dissertaçõeshttp://tede2.pucrs.br/tede2/PRIhttps://tede2.pucrs.br/oai/requestbiblioteca.central@pucrs.br||opendoar:2015-04-29T23:03:01Biblioteca Digital de Teses e Dissertações da PUC_RS - Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)false |
dc.title.por.fl_str_mv |
S?ntese e caracteriza??o de poli (l?quidos i?nicos) e sua avalia??o em captura e transforma??o de CO2 |
title |
S?ntese e caracteriza??o de poli (l?quidos i?nicos) e sua avalia??o em captura e transforma??o de CO2 |
spellingShingle |
S?ntese e caracteriza??o de poli (l?quidos i?nicos) e sua avalia??o em captura e transforma??o de CO2 Fern?ndez Rojas, Marisol ENGENHARIA DE MATERIAIS CAPTURA DE CARBONO S?NTESE (QU?MICA) L?QUIDOS I?NICOS CNPQ::ENGENHARIAS |
title_short |
S?ntese e caracteriza??o de poli (l?quidos i?nicos) e sua avalia??o em captura e transforma??o de CO2 |
title_full |
S?ntese e caracteriza??o de poli (l?quidos i?nicos) e sua avalia??o em captura e transforma??o de CO2 |
title_fullStr |
S?ntese e caracteriza??o de poli (l?quidos i?nicos) e sua avalia??o em captura e transforma??o de CO2 |
title_full_unstemmed |
S?ntese e caracteriza??o de poli (l?quidos i?nicos) e sua avalia??o em captura e transforma??o de CO2 |
title_sort |
S?ntese e caracteriza??o de poli (l?quidos i?nicos) e sua avalia??o em captura e transforma??o de CO2 |
author |
Fern?ndez Rojas, Marisol |
author_facet |
Fern?ndez Rojas, Marisol |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Einloft, Sandra Mara Oliveira |
dc.contributor.advisor1ID.fl_str_mv |
CPF:40315886072 |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4787827D1 |
dc.contributor.authorID.fl_str_mv |
CPF:86241427091 |
dc.contributor.authorLattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4351828D6 |
dc.contributor.author.fl_str_mv |
Fern?ndez Rojas, Marisol |
contributor_str_mv |
Einloft, Sandra Mara Oliveira |
dc.subject.por.fl_str_mv |
ENGENHARIA DE MATERIAIS CAPTURA DE CARBONO S?NTESE (QU?MICA) L?QUIDOS I?NICOS |
topic |
ENGENHARIA DE MATERIAIS CAPTURA DE CARBONO S?NTESE (QU?MICA) L?QUIDOS I?NICOS CNPQ::ENGENHARIAS |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS |
description |
The development of new materials for CO2 capture and transformation is of great importance to the use of fossil resources, preserving the environment. In this context, ionic liquids represent an environmentally friendly alternative, because they have negligible vapor pressure and can be reused. However, their CO2 absorption capacity not surpasses traditional solvents and their use as homogeneous catalysts in transformation processes of CO2 requires additional distillation process which increases the cost. Looking for enhance the application of ILs in these areas, in the present study were synthesized poly(ionic liquid)s (PILs) from polyurethane and the ionic liquid 1-butyl chloride-3-methylimidazolium (BMIM Cl), which were characterized structural (IR, NMR), thermal (DSC, TGA) and morphology (SEM); also nanoparticles of these were synthesized by multiple emulsification followed by solvent evaporation, and also characterized. These materials were evaluated in the process of CO2 capture and transformation of this gas in cyclic carbonate through cycloaddition reaction with propylene oxide. In capture assays, the PILs showed highest sorption capacity of CO2 than the IL precursor (BMIM Cl) and PU departure; the NP obtained for these, although they were obtained aggregated, showed faster rates of sorption. In the carbonation reactions PILs presented propylene oxide conversion values approximate to those obtained for BMIM Cl, moreover were easily separated by precipitation-filtration. Therefore, the PILs evaluated in this study showed positive results for its use in the process of capturing and processing CO2. |
publishDate |
2013 |
dc.date.issued.fl_str_mv |
2013-12-11 |
dc.date.available.fl_str_mv |
2014-01-13 |
dc.date.accessioned.fl_str_mv |
2015-04-14T13:59:02Z |
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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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publishedVersion |
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http://tede2.pucrs.br/tede2/handle/tede/3246 |
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http://tede2.pucrs.br/tede2/handle/tede/3246 |
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Pontif?cia Universidade Cat?lica do Rio Grande do Sul |
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PUCRS |
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BR |
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Pontif?cia Universidade Cat?lica do Rio Grande do Sul |
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