Obten??o de suportes a partir da casca de arroz : imobiliza??o de l?quidos i?nicos e avalia??o em captura de CO2
| Ano de defesa: | 2018 |
|---|---|
| Autor(a) principal: |
Duczinski, Rafael Borges
 |
| Orientador(a): |
Einloft, Sandra Mara Oliveira
|
| 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: |
Escola Polit?cnica
|
| País: |
Brasil
|
| Palavras-chave em Português: | |
| Palavras-chave em Inglês: | |
| Área do conhecimento CNPq: | |
| Link de acesso: | http://tede2.pucrs.br/tede2/handle/tede/8317 |
Resumo: | Ionic liquids (ILs) grafting in inorganic solids sorbents is a promising alternative to replace the usual separation process of carbon dioxide from natural gas currently performed using amines. ILs presents unique properties such as, low environmental impact, non-corrosion and process efficiency. The ILs 1,3-bis(3-trimethoxysilylpropyl)imidazolium chloride and 1-methyl-3-(3-trimethoxysilylpropyl)imidazolium chloride were immobilized in MCM-41 and MCMRH silica. The MCMRH was synthesized from rice husk. ILs chemical immobilization was carried out by grafting method, where covalent bonds are formed between silane and hydroxyl groups present in the support. Syntheses were carried out in toluene under nitrogen atmosphere to prevent the hydrolysis and condensation of methoxy groups in the silane structure. CO2 sorption capacity and selectivity for CO2/CH4 were evaluated after synthesis. ILs in concentrations of 10 and 20% were tested. The samples characterization by XPS, NMR, FTIR and TGA confirmed the formation of the proposed IL structures. Sorption and selectivity results showed that the immobilization reduces the CO2sorption capacity, however the selectivity of the materials was higher in relation to the pristine silica. Supports immobilized with ILs 1-methyl-3- (3-trimethoxysilylpropyl) imidazole chloride presented better performance. The observed selectivity increase was 25% when 10% of IL was supported on MCMRH silica. |
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Einloft, Sandra Mara Oliveirahttp://lattes.cnpq.br/5153951650965699http://lattes.cnpq.br/3038035469841318Duczinski, Rafael Borges2018-10-16T16:55:39Z2018-03-05http://tede2.pucrs.br/tede2/handle/tede/8317Ionic liquids (ILs) grafting in inorganic solids sorbents is a promising alternative to replace the usual separation process of carbon dioxide from natural gas currently performed using amines. ILs presents unique properties such as, low environmental impact, non-corrosion and process efficiency. The ILs 1,3-bis(3-trimethoxysilylpropyl)imidazolium chloride and 1-methyl-3-(3-trimethoxysilylpropyl)imidazolium chloride were immobilized in MCM-41 and MCMRH silica. The MCMRH was synthesized from rice husk. ILs chemical immobilization was carried out by grafting method, where covalent bonds are formed between silane and hydroxyl groups present in the support. Syntheses were carried out in toluene under nitrogen atmosphere to prevent the hydrolysis and condensation of methoxy groups in the silane structure. CO2 sorption capacity and selectivity for CO2/CH4 were evaluated after synthesis. ILs in concentrations of 10 and 20% were tested. The samples characterization by XPS, NMR, FTIR and TGA confirmed the formation of the proposed IL structures. Sorption and selectivity results showed that the immobilization reduces the CO2sorption capacity, however the selectivity of the materials was higher in relation to the pristine silica. Supports immobilized with ILs 1-methyl-3- (3-trimethoxysilylpropyl) imidazole chloride presented better performance. The observed selectivity increase was 25% when 10% of IL was supported on MCMRH silica.A imobiliza??o de l?quidos i?nicos ? LIs em suportes inorg?nicos ? uma alternativa ao uso de aminas no processo de separa??o e captura do di?xido de carbono contido no g?s natural, pois possui vantagens ligadas ao aumento de vida ?til de equipamentos, efici?ncia de processo e impacto ambiental. Os LIs cloreto de 1,3-bis(3-trimetoxisililpropil)imidazol e cloreto de 1-metil-3-(3-trimetoxisililpropil)imidazol foram imobilizados na s?lica comercial MCM-41 e na s?lica sintetizada a partir da casca de arroz nomeada neste trabalho como MCMRH. A imobiliza??o qu?mica dos LIs foi realizada atrav?s da forma??o de liga??es covalentes entre grupos silanos na estrutura do l?quido i?nico e grupos hidroxila presentes nos suportes. As s?nteses foram realizadas em tolueno sob condi??es inertes para controle da hidr?lise e condensa??o de grupos metoxi na estrutura dos silanos. Ap?s a sua s?ntese, os suportes imobilizados com LIs tiveram sua capacidade de sor??o de CO2 e seletividade em rela??o a CO2/CH4 avaliadas. LIs em concentra??es de 20 e 10% foram testadas. A caracteriza??o das amostras por XPS, RMN, FTIR e TGA confirmaram a forma??o das estruturas dos LIs propostos e os resultados de sor??o e seletividade mostraram que a imobiliza??o reduz a capacidade de sor??o em rela??o ao CO2, entretanto a seletividade dos materiais foram maiores em rela??o aos suportes antes da imobiliza??o. Os suportes imobilizados com o LIs cloreto de 1-metil-3-(3-trimetoxisililpropil)imidazol tiveram melhor desempenho em rela??o aos demais, o aumento de seletividade observado foi de 25% no melhor caso, onde 10% de LI foi suportado na s?lica MCMRH.Submitted by PPG Engenharia e Tecnologia de Materiais (engenharia.pg.materiais@pucrs.br) on 2018-10-10T14:17:08Z No. of bitstreams: 1 Dissertac?a?o mestrado_rafa p?s banca - final.pdf: 6925259 bytes, checksum: 04c8ab3a00fa276e3a89008c46ce0d72 (MD5)Approved for entry into archive by Caroline Xavier (caroline.xavier@pucrs.br) on 2018-10-16T16:50:44Z (GMT) No. of bitstreams: 1 Dissertac?a?o mestrado_rafa p?s banca - final.pdf: 6925259 bytes, checksum: 04c8ab3a00fa276e3a89008c46ce0d72 (MD5)Made available in DSpace on 2018-10-16T16:55:39Z (GMT). No. of bitstreams: 1 Dissertac?a?o mestrado_rafa p?s banca - final.pdf: 6925259 bytes, checksum: 04c8ab3a00fa276e3a89008c46ce0d72 (MD5) Previous issue date: 2018-03-05Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPESapplication/pdfhttp://tede2.pucrs.br:80/tede2/retrieve/173389/Dissertac%cc%a7a%cc%83o%20mestrado_rafa%20p%c3%b3s%20banca%20-%20final.pdf.jpgporPontif?cia Universidade Cat?lica do Rio Grande do SulPrograma de P?s-Gradua??o em Engenharia e Tecnologia de MateriaisPUCRSBrasilEscola Polit?cnicaL?quido I?nicoCasca de ArrozImobiliza??oCaptura de CO2Adsor??o de CO2Ionic LiquidRice HuskImmobilizationCO2 CaptureCO2 SorptionENGENHARIASObten??o de suportes a partir da casca de arroz : imobiliza??o de l?quidos i?nicos e avalia??o em captura de CO2info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisTrabalho n?o apresenta restri??o para publica??o-743271934421512012250050060045189710564848268252075167498588264571info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da PUC_RSinstname:Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)instacron:PUC_RSTHUMBNAILDissertac?a?o mestrado_rafa p?s banca - final.pdf.jpgDissertac?a?o mestrado_rafa p?s banca - final.pdf.jpgimage/jpeg5897http://tede2.pucrs.br/tede2/bitstream/tede/8317/4/Dissertac%CC%A7a%CC%83o+mestrado_rafa+p%C3%B3s+banca+-+final.pdf.jpgc079666d8fdbe56c753e79f7f3eb3779MD54TEXTDissertac?a?o mestrado_rafa p?s banca - final.pdf.txtDissertac?a?o mestrado_rafa p?s banca - final.pdf.txttext/plain76378http://tede2.pucrs.br/tede2/bitstream/tede/8317/3/Dissertac%CC%A7a%CC%83o+mestrado_rafa+p%C3%B3s+banca+-+final.pdf.txt4dd08e028f3b2b0340aa2d226dce5243MD53ORIGINALDissertac?a?o mestrado_rafa p?s banca - final.pdfDissertac?a?o mestrado_rafa p?s banca - final.pdfapplication/pdf6925259http://tede2.pucrs.br/tede2/bitstream/tede/8317/2/Dissertac%CC%A7a%CC%83o+mestrado_rafa+p%C3%B3s+banca+-+final.pdf04c8ab3a00fa276e3a89008c46ce0d72MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-8610http://tede2.pucrs.br/tede2/bitstream/tede/8317/1/license.txt5a9d6006225b368ef605ba16b4f6d1beMD51tede/83172018-10-16 20:01:06.675oai:tede2.pucrs.br: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Biblioteca Digital de Teses e Dissertaçõeshttp://tede2.pucrs.br/tede2/PRIhttps://tede2.pucrs.br/oai/requestbiblioteca.central@pucrs.br||opendoar:2018-10-16T23:01:06Biblioteca Digital de Teses e Dissertações da PUC_RS - Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)false |
| dc.title.por.fl_str_mv |
Obten??o de suportes a partir da casca de arroz : imobiliza??o de l?quidos i?nicos e avalia??o em captura de CO2 |
| title |
Obten??o de suportes a partir da casca de arroz : imobiliza??o de l?quidos i?nicos e avalia??o em captura de CO2 |
| spellingShingle |
Obten??o de suportes a partir da casca de arroz : imobiliza??o de l?quidos i?nicos e avalia??o em captura de CO2 Duczinski, Rafael Borges L?quido I?nico Casca de Arroz Imobiliza??o Captura de CO2 Adsor??o de CO2 Ionic Liquid Rice Husk Immobilization CO2 Capture CO2 Sorption ENGENHARIAS |
| title_short |
Obten??o de suportes a partir da casca de arroz : imobiliza??o de l?quidos i?nicos e avalia??o em captura de CO2 |
| title_full |
Obten??o de suportes a partir da casca de arroz : imobiliza??o de l?quidos i?nicos e avalia??o em captura de CO2 |
| title_fullStr |
Obten??o de suportes a partir da casca de arroz : imobiliza??o de l?quidos i?nicos e avalia??o em captura de CO2 |
| title_full_unstemmed |
Obten??o de suportes a partir da casca de arroz : imobiliza??o de l?quidos i?nicos e avalia??o em captura de CO2 |
| title_sort |
Obten??o de suportes a partir da casca de arroz : imobiliza??o de l?quidos i?nicos e avalia??o em captura de CO2 |
| author |
Duczinski, Rafael Borges |
| author_facet |
Duczinski, Rafael Borges |
| author_role |
author |
| dc.contributor.advisor1.fl_str_mv |
Einloft, Sandra Mara Oliveira |
| dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/5153951650965699 |
| dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/3038035469841318 |
| dc.contributor.author.fl_str_mv |
Duczinski, Rafael Borges |
| contributor_str_mv |
Einloft, Sandra Mara Oliveira |
| dc.subject.por.fl_str_mv |
L?quido I?nico Casca de Arroz Imobiliza??o Captura de CO2 Adsor??o de CO2 |
| topic |
L?quido I?nico Casca de Arroz Imobiliza??o Captura de CO2 Adsor??o de CO2 Ionic Liquid Rice Husk Immobilization CO2 Capture CO2 Sorption ENGENHARIAS |
| dc.subject.eng.fl_str_mv |
Ionic Liquid Rice Husk Immobilization CO2 Capture CO2 Sorption |
| dc.subject.cnpq.fl_str_mv |
ENGENHARIAS |
| description |
Ionic liquids (ILs) grafting in inorganic solids sorbents is a promising alternative to replace the usual separation process of carbon dioxide from natural gas currently performed using amines. ILs presents unique properties such as, low environmental impact, non-corrosion and process efficiency. The ILs 1,3-bis(3-trimethoxysilylpropyl)imidazolium chloride and 1-methyl-3-(3-trimethoxysilylpropyl)imidazolium chloride were immobilized in MCM-41 and MCMRH silica. The MCMRH was synthesized from rice husk. ILs chemical immobilization was carried out by grafting method, where covalent bonds are formed between silane and hydroxyl groups present in the support. Syntheses were carried out in toluene under nitrogen atmosphere to prevent the hydrolysis and condensation of methoxy groups in the silane structure. CO2 sorption capacity and selectivity for CO2/CH4 were evaluated after synthesis. ILs in concentrations of 10 and 20% were tested. The samples characterization by XPS, NMR, FTIR and TGA confirmed the formation of the proposed IL structures. Sorption and selectivity results showed that the immobilization reduces the CO2sorption capacity, however the selectivity of the materials was higher in relation to the pristine silica. Supports immobilized with ILs 1-methyl-3- (3-trimethoxysilylpropyl) imidazole chloride presented better performance. The observed selectivity increase was 25% when 10% of IL was supported on MCMRH silica. |
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2018 |
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