Estudo de catalisadores de Zn-V-Nb obtidos a partir de precursores lamelares para a reação de desidrogenação oxidativa do propano
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UERJ |
Texto Completo: | http://www.bdtd.uerj.br/handle/1/16359 |
Resumo: | Propene is the second most important raw material in the petrochemical industry. It’s used for the production of polypropylene, acrylonitrile, oxy-alcohols, cumene and acrylic acid. The traditional methods to produce are as a by-product in the processes of hydrocarbon pyrolysis and fluidized catalytic cracking. In order to satisfy the increasing in the demand for propylene, some alternative processes are being studied, among them the oxidative dehydrogenation of propane (ODHP). Most catalysts described in the literature are based on vanadium oxides as the main component. On this study, it was used Φz type materials to add Nb in Zn-V structure. The synthesis method of the precursors was the co-precipitation. Catalysts were obtained by calcination of the precursor at 550 ºC during 3 h. The performance of the catalysts were evaluated in oxidative dehydrogenation of propane at temperatures from 350 ºC to 500 ºC. Propane conversion and propene selectivity were measured The technique of X-ray diffraction confirmed that the precursors V100 (no addition of Nb) and V95 (addition of 5% of Nb) have the Φz type structure. The structure indexing was successful. Precursor structures were refined by Rietveld method and the residuals factors were less than 10% for both V100 and V95. Phase identification showed that catalysts are formed by multimetallic oxides except for V0 (addition of 100% of Nb and without V in structure). Rietveld method was used to measure the proportion of the phases. For ODHP, the conversion was greater for the catalyst with Nb in its composition while the selectivity was lower. The addition of Nb in the structure of Zn-V catalysts increased the selectivity. The catalyst obtained by calcination at 750ºC showed the best performance in the ODHP reaction over 400ºC. |
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Santos, Luz Amparo Palaciohttp://lattes.cnpq.br/2277031732030434Cesar, Deborah Vargashttp://lattes.cnpq.br/1350917983266189Santos, Luz Amparo PalacioCesar, Deborah VargasGonçalves , Marcos Vinicius Colaçohttp://lattes.cnpq.br/7431203384675092Gois, Jefferson Santos dehttp://lattes.cnpq.br/8608339778516300Bonfim, Rodrigo de Paiva Florohttp://lattes.cnpq.br/3034430315392022http://lattes.cnpq.br/6627914488568330Rocha, Marise Machado2021-07-20T13:29:52Z2020-02-18ROCHA, Marise Machado. Estudo de catalisadores de Zn-V-Nb obtidos a partir de precursores lamelares para a reação de desidrogenação oxidativa do propano. 2020. 87 f. Dissertação (Mestrado em Engenharia Química) - Faculdade de Química, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, 2020.http://www.bdtd.uerj.br/handle/1/16359Propene is the second most important raw material in the petrochemical industry. It’s used for the production of polypropylene, acrylonitrile, oxy-alcohols, cumene and acrylic acid. The traditional methods to produce are as a by-product in the processes of hydrocarbon pyrolysis and fluidized catalytic cracking. In order to satisfy the increasing in the demand for propylene, some alternative processes are being studied, among them the oxidative dehydrogenation of propane (ODHP). Most catalysts described in the literature are based on vanadium oxides as the main component. On this study, it was used Φz type materials to add Nb in Zn-V structure. The synthesis method of the precursors was the co-precipitation. Catalysts were obtained by calcination of the precursor at 550 ºC during 3 h. The performance of the catalysts were evaluated in oxidative dehydrogenation of propane at temperatures from 350 ºC to 500 ºC. Propane conversion and propene selectivity were measured The technique of X-ray diffraction confirmed that the precursors V100 (no addition of Nb) and V95 (addition of 5% of Nb) have the Φz type structure. The structure indexing was successful. Precursor structures were refined by Rietveld method and the residuals factors were less than 10% for both V100 and V95. Phase identification showed that catalysts are formed by multimetallic oxides except for V0 (addition of 100% of Nb and without V in structure). Rietveld method was used to measure the proportion of the phases. For ODHP, the conversion was greater for the catalyst with Nb in its composition while the selectivity was lower. The addition of Nb in the structure of Zn-V catalysts increased the selectivity. The catalyst obtained by calcination at 750ºC showed the best performance in the ODHP reaction over 400ºC.O propeno é a segunda matéria-prima de maior importância na indústria petroquímica, cujas aplicações são a produção de polipropileno, acrilonitrila, oxi-álcoois, cumeno e ácido acrílico. É obtido como subproduto nos processos de pirólise de hidrocarbonetos e de craqueamento catalítico fluidizado de gasóleos. Devido à elevada demanda, alguns processos para a obtenção direta são estudados, dentre eles a desidrogenação oxidativa do propano (DHOP), produzindo, idealmente, propeno e água. Dentre os catalisadores mais estudados para essa reação, a maioria apresenta como componente principal o vanádio. Nesse trabalho foi estudada a influência da adição de Nb em precursores de Zn-V com estrutura lamelar do tipo Φz e seu efeito na reação de desidrogenação oxidativa do propano. Os precursores foram preparados pelo método de coprecipitação e foram calcinados a 550ºC por 3 h, para formar os catalisadores. Os testes catalíticos da reação de DHOP foram realizados na faixa de temperatura de 350 ºC a 500 ºC e em pressão atmosférica. O desempenho dos catalisadores foi estabelecido com base nos indicadores de parâmetros de conversão (X) e de Seletividade (S). A caracterização por difração de raios X confirmou a formação da estrutura do tipo Φz para o V100 (sem a adição de nióbio) e V95 (com adição de 5% de nióbio). Com dados de difração de raios X obtidos com fonte de luz Sincrotron, a célula unitária dos precursores foi indexada com êxito. As estruturas foram refinadas pelo método de Rietveld, apresentando bom ajuste para o V100 e V95. A identificação das fases mostrou a formação de óxidos multimetálicos para todos os catalisadores, exceto o V0C (adição de 100% de Nb e sem V). A composição das fases foi obtida pelo método de Rietveld. Nos testes catalíticos, foi observado que o catalisador sem V apresentou maiores valores de conversão, porém menores valores de seletividade para o propeno. Para os catalisadores com vanádio, a inserção de Nb causou um aumento nos valores de seletividade. O catalisador obtido pela calcinação a 750 ºC apresentou valores mais elevados de conversão e seletividade na reação ocorrendo acima de 400 ºC.Submitted by Ana Rachel CTC/Q (ana.teles@uerj.br) on 2021-07-20T13:29:52Z No. of bitstreams: 1 Dissertação - Marise Rocha - 2020 - Completa.pdf: 2797270 bytes, checksum: af91cf23456d48f7ad39fb295aa17308 (MD5)Made available in DSpace on 2021-07-20T13:29:52Z (GMT). No. of bitstreams: 1 Dissertação - Marise Rocha - 2020 - Completa.pdf: 2797270 bytes, checksum: af91cf23456d48f7ad39fb295aa17308 (MD5) Previous issue date: 2020-02-18Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESapplication/pdfporUniversidade do Estado do Rio de JaneiroPrograma de Pós-Graduação em Engenharia QuímicaUERJBrasilCentro de Tecnologia e Ciências::Instituto de QuímicaDesidrogenação oxidativa do propanoVanádioEstrutura ΦzNióbioOxidative dehydrogenation of propaneVanadiumDesidrogenaçãoPropanoCatalisadoresΦz type materialsNiobiumENGENHARIAS::ENGENHARIA QUIMICA::PROCESSOS INDUSTRIAIS DE ENGENHARIA QUIMICAEstudo de catalisadores de Zn-V-Nb obtidos a partir de precursores lamelares para a reação de desidrogenação oxidativa do propanoStudy of Zn-V-Nb catalyts obtainded from laminar structures precursors for the reaction of oxidative dehydrogenation of propaneinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UERJinstname:Universidade do Estado do Rio de Janeiro (UERJ)instacron:UERJORIGINALDissertação - Marise Machado Rocha - 2020 - Completa.pdfDissertação - Marise Machado Rocha - 2020 - Completa.pdfapplication/pdf2797270http://www.bdtd.uerj.br/bitstream/1/16359/2/Disserta%C3%A7%C3%A3o+-+Marise+Machado+Rocha+-+2020+-+Completa.pdfaf91cf23456d48f7ad39fb295aa17308MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-82123http://www.bdtd.uerj.br/bitstream/1/16359/1/license.txte5502652da718045d7fcd832b79fca29MD511/163592021-10-06 01:04:54.907oai:www.bdtd.uerj.br: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Biblioteca Digital de Teses e Dissertaçõeshttp://www.bdtd.uerj.br/PUBhttps://www.bdtd.uerj.br:8443/oai/requestbdtd.suporte@uerj.bropendoar:29032021-10-06T04:04:54Biblioteca Digital de Teses e Dissertações da UERJ - Universidade do Estado do Rio de Janeiro (UERJ)false |
dc.title.por.fl_str_mv |
Estudo de catalisadores de Zn-V-Nb obtidos a partir de precursores lamelares para a reação de desidrogenação oxidativa do propano |
dc.title.alternative.eng.fl_str_mv |
Study of Zn-V-Nb catalyts obtainded from laminar structures precursors for the reaction of oxidative dehydrogenation of propane |
title |
Estudo de catalisadores de Zn-V-Nb obtidos a partir de precursores lamelares para a reação de desidrogenação oxidativa do propano |
spellingShingle |
Estudo de catalisadores de Zn-V-Nb obtidos a partir de precursores lamelares para a reação de desidrogenação oxidativa do propano Rocha, Marise Machado Desidrogenação oxidativa do propano Vanádio Estrutura Φz Nióbio Oxidative dehydrogenation of propane Vanadium Desidrogenação Propano Catalisadores Φz type materials Niobium ENGENHARIAS::ENGENHARIA QUIMICA::PROCESSOS INDUSTRIAIS DE ENGENHARIA QUIMICA |
title_short |
Estudo de catalisadores de Zn-V-Nb obtidos a partir de precursores lamelares para a reação de desidrogenação oxidativa do propano |
title_full |
Estudo de catalisadores de Zn-V-Nb obtidos a partir de precursores lamelares para a reação de desidrogenação oxidativa do propano |
title_fullStr |
Estudo de catalisadores de Zn-V-Nb obtidos a partir de precursores lamelares para a reação de desidrogenação oxidativa do propano |
title_full_unstemmed |
Estudo de catalisadores de Zn-V-Nb obtidos a partir de precursores lamelares para a reação de desidrogenação oxidativa do propano |
title_sort |
Estudo de catalisadores de Zn-V-Nb obtidos a partir de precursores lamelares para a reação de desidrogenação oxidativa do propano |
author |
Rocha, Marise Machado |
author_facet |
Rocha, Marise Machado |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Santos, Luz Amparo Palacio |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/2277031732030434 |
dc.contributor.advisor2.fl_str_mv |
Cesar, Deborah Vargas |
dc.contributor.advisor2Lattes.fl_str_mv |
http://lattes.cnpq.br/1350917983266189 |
dc.contributor.referee1.fl_str_mv |
Santos, Luz Amparo Palacio |
dc.contributor.referee2.fl_str_mv |
Cesar, Deborah Vargas |
dc.contributor.referee3.fl_str_mv |
Gonçalves , Marcos Vinicius Colaço |
dc.contributor.referee3Lattes.fl_str_mv |
http://lattes.cnpq.br/7431203384675092 |
dc.contributor.referee4.fl_str_mv |
Gois, Jefferson Santos de |
dc.contributor.referee4Lattes.fl_str_mv |
http://lattes.cnpq.br/8608339778516300 |
dc.contributor.referee5.fl_str_mv |
Bonfim, Rodrigo de Paiva Floro |
dc.contributor.referee5Lattes.fl_str_mv |
http://lattes.cnpq.br/3034430315392022 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/6627914488568330 |
dc.contributor.author.fl_str_mv |
Rocha, Marise Machado |
contributor_str_mv |
Santos, Luz Amparo Palacio Cesar, Deborah Vargas Santos, Luz Amparo Palacio Cesar, Deborah Vargas Gonçalves , Marcos Vinicius Colaço Gois, Jefferson Santos de Bonfim, Rodrigo de Paiva Floro |
dc.subject.por.fl_str_mv |
Desidrogenação oxidativa do propano Vanádio Estrutura Φz Nióbio Oxidative dehydrogenation of propane Vanadium Desidrogenação Propano Catalisadores |
topic |
Desidrogenação oxidativa do propano Vanádio Estrutura Φz Nióbio Oxidative dehydrogenation of propane Vanadium Desidrogenação Propano Catalisadores Φz type materials Niobium ENGENHARIAS::ENGENHARIA QUIMICA::PROCESSOS INDUSTRIAIS DE ENGENHARIA QUIMICA |
dc.subject.eng.fl_str_mv |
Φz type materials Niobium |
dc.subject.cnpq.fl_str_mv |
ENGENHARIAS::ENGENHARIA QUIMICA::PROCESSOS INDUSTRIAIS DE ENGENHARIA QUIMICA |
description |
Propene is the second most important raw material in the petrochemical industry. It’s used for the production of polypropylene, acrylonitrile, oxy-alcohols, cumene and acrylic acid. The traditional methods to produce are as a by-product in the processes of hydrocarbon pyrolysis and fluidized catalytic cracking. In order to satisfy the increasing in the demand for propylene, some alternative processes are being studied, among them the oxidative dehydrogenation of propane (ODHP). Most catalysts described in the literature are based on vanadium oxides as the main component. On this study, it was used Φz type materials to add Nb in Zn-V structure. The synthesis method of the precursors was the co-precipitation. Catalysts were obtained by calcination of the precursor at 550 ºC during 3 h. The performance of the catalysts were evaluated in oxidative dehydrogenation of propane at temperatures from 350 ºC to 500 ºC. Propane conversion and propene selectivity were measured The technique of X-ray diffraction confirmed that the precursors V100 (no addition of Nb) and V95 (addition of 5% of Nb) have the Φz type structure. The structure indexing was successful. Precursor structures were refined by Rietveld method and the residuals factors were less than 10% for both V100 and V95. Phase identification showed that catalysts are formed by multimetallic oxides except for V0 (addition of 100% of Nb and without V in structure). Rietveld method was used to measure the proportion of the phases. For ODHP, the conversion was greater for the catalyst with Nb in its composition while the selectivity was lower. The addition of Nb in the structure of Zn-V catalysts increased the selectivity. The catalyst obtained by calcination at 750ºC showed the best performance in the ODHP reaction over 400ºC. |
publishDate |
2020 |
dc.date.issued.fl_str_mv |
2020-02-18 |
dc.date.accessioned.fl_str_mv |
2021-07-20T13:29:52Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
ROCHA, Marise Machado. Estudo de catalisadores de Zn-V-Nb obtidos a partir de precursores lamelares para a reação de desidrogenação oxidativa do propano. 2020. 87 f. Dissertação (Mestrado em Engenharia Química) - Faculdade de Química, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, 2020. |
dc.identifier.uri.fl_str_mv |
http://www.bdtd.uerj.br/handle/1/16359 |
identifier_str_mv |
ROCHA, Marise Machado. Estudo de catalisadores de Zn-V-Nb obtidos a partir de precursores lamelares para a reação de desidrogenação oxidativa do propano. 2020. 87 f. Dissertação (Mestrado em Engenharia Química) - Faculdade de Química, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, 2020. |
url |
http://www.bdtd.uerj.br/handle/1/16359 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
dc.publisher.none.fl_str_mv |
Universidade do Estado do Rio de Janeiro |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Engenharia Química |
dc.publisher.initials.fl_str_mv |
UERJ |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Centro de Tecnologia e Ciências::Instituto de Química |
publisher.none.fl_str_mv |
Universidade do Estado do Rio de Janeiro |
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Biblioteca Digital de Teses e Dissertações da UERJ |
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