Synthesis and characterization of cobalt-doped molybdenum carbides produced in a fixed bed reactor

Detalhes bibliográficos
Autor(a) principal: Dantas, Suylan Lourdes de Araújo
Data de Publicação: 2018
Outros Autores: Moriyama, André Luis Lopes, Sena, Michael Segundo, Souza, Carlson Pereira de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRN
Texto Completo: https://repositorio.ufrn.br/handle/123456789/32340
Resumo: 2029
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spelling Dantas, Suylan Lourdes de AraújoMoriyama, André Luis LopesSena, Michael SegundoSouza, Carlson Pereira de2021-04-28T21:04:07Z2018-11DANTAS, S.L.A. ; LOPES-MORIYAMA, A.L. ; SENA, M.S. ; SOUZA, C.P. . Synthesis and characterization of cobalt-doped molybdenum carbides produced in a fixed bed reactor. CERAMICS INTERNATIONAL, v. 44, p. 20551-20555, 2018. Disponível em: https://www.sciencedirect.com/science/article/pii/S0272884218321114?via%3Dihub#!. Acesso em: 28 abr. 2021. https://doi.org/10.1016/j.ceramint.2018.08.054.0272-8842https://repositorio.ufrn.br/handle/123456789/3234010.1016/j.ceramint.2018.08.054ElsevierSynthesisCharacterizationMolybdenum carbidesCobaltSynthesis and characterization of cobalt-doped molybdenum carbides produced in a fixed bed reactorinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article2029The demand for cheaper production processes of materials has been the focus of several studies in the last years, mainly by the industries, in order to relate the cost-benefit associated with the low risks to the environment, and the ease of transportation and use. The transition metal carbides are gaining emphasis due to their catalytic activity, stability and selectivity in a wide range of reactions. The purpose of doping the molybdenum carbide with cobalt is the seek for a change in the structure of the carbide so that an improvement of its catalytic activity occurs. The aim of this work is to study the synthesis and characterization of semiconductor materials with the carbide type structure, produced with nationally and locally abundant elements, specifically at Rio Grande do Norte state, using the gas-solid reaction method in a fixed-bed reactor. Based on a bibliographical survey, and in previously obtained results, the compositions of the materials to be studied will be Mo2C doped with cobalt (5% and 10%). The physico-chemical characteristics of the material were evaluated using several analytical techniques, such as X-ray diffraction (XRD), thermogravimetric analysis (TGA), surface area by the BET method, granulometry and scanning electron microscopy (SEM). With its characterization, it is possible to understand the relation between its structural properties and its activity as heterogeneous catalysts. The results of the thermal analysis by TGA of the precursor powder were carried out in order to identify the mass losses of the material and to verify the operating temperatures of the fixed bed reactor for the production of the carbide. From the XRD results, it was verified the formation of cobalt-doped molybdenum carbide synthesized by the wet method, and the phases and characteristic peaks of each material were identifiedengreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNinfo:eu-repo/semantics/openAccessCC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8914https://repositorio.ufrn.br/bitstream/123456789/32340/2/license_rdf4d2950bda3d176f570a9f8b328dfbbefMD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/32340/3/license.txte9597aa2854d128fd968be5edc8a28d9MD53TEXTSynthesisAndCharacterizationCobalt_Moriyama_2018.pdf.txtSynthesisAndCharacterizationCobalt_Moriyama_2018.pdf.txtExtracted texttext/plain29052https://repositorio.ufrn.br/bitstream/123456789/32340/4/SynthesisAndCharacterizationCobalt_Moriyama_2018.pdf.txt9c7c8cbad175a3f82c574b4523ab5927MD54THUMBNAILSynthesisAndCharacterizationCobalt_Moriyama_2018.pdf.jpgSynthesisAndCharacterizationCobalt_Moriyama_2018.pdf.jpgGenerated Thumbnailimage/jpeg1688https://repositorio.ufrn.br/bitstream/123456789/32340/5/SynthesisAndCharacterizationCobalt_Moriyama_2018.pdf.jpg63ea2c6e526f3da2173e894379dc162fMD55123456789/323402024-03-19 01:01:34.492oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2024-03-19T04:01:34Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false
dc.title.pt_BR.fl_str_mv Synthesis and characterization of cobalt-doped molybdenum carbides produced in a fixed bed reactor
title Synthesis and characterization of cobalt-doped molybdenum carbides produced in a fixed bed reactor
spellingShingle Synthesis and characterization of cobalt-doped molybdenum carbides produced in a fixed bed reactor
Dantas, Suylan Lourdes de Araújo
Synthesis
Characterization
Molybdenum carbides
Cobalt
title_short Synthesis and characterization of cobalt-doped molybdenum carbides produced in a fixed bed reactor
title_full Synthesis and characterization of cobalt-doped molybdenum carbides produced in a fixed bed reactor
title_fullStr Synthesis and characterization of cobalt-doped molybdenum carbides produced in a fixed bed reactor
title_full_unstemmed Synthesis and characterization of cobalt-doped molybdenum carbides produced in a fixed bed reactor
title_sort Synthesis and characterization of cobalt-doped molybdenum carbides produced in a fixed bed reactor
author Dantas, Suylan Lourdes de Araújo
author_facet Dantas, Suylan Lourdes de Araújo
Moriyama, André Luis Lopes
Sena, Michael Segundo
Souza, Carlson Pereira de
author_role author
author2 Moriyama, André Luis Lopes
Sena, Michael Segundo
Souza, Carlson Pereira de
author2_role author
author
author
dc.contributor.author.fl_str_mv Dantas, Suylan Lourdes de Araújo
Moriyama, André Luis Lopes
Sena, Michael Segundo
Souza, Carlson Pereira de
dc.subject.por.fl_str_mv Synthesis
Characterization
Molybdenum carbides
Cobalt
topic Synthesis
Characterization
Molybdenum carbides
Cobalt
description 2029
publishDate 2018
dc.date.issued.fl_str_mv 2018-11
dc.date.accessioned.fl_str_mv 2021-04-28T21:04:07Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.citation.fl_str_mv DANTAS, S.L.A. ; LOPES-MORIYAMA, A.L. ; SENA, M.S. ; SOUZA, C.P. . Synthesis and characterization of cobalt-doped molybdenum carbides produced in a fixed bed reactor. CERAMICS INTERNATIONAL, v. 44, p. 20551-20555, 2018. Disponível em: https://www.sciencedirect.com/science/article/pii/S0272884218321114?via%3Dihub#!. Acesso em: 28 abr. 2021. https://doi.org/10.1016/j.ceramint.2018.08.054.
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/handle/123456789/32340
dc.identifier.issn.none.fl_str_mv 0272-8842
dc.identifier.doi.none.fl_str_mv 10.1016/j.ceramint.2018.08.054
identifier_str_mv DANTAS, S.L.A. ; LOPES-MORIYAMA, A.L. ; SENA, M.S. ; SOUZA, C.P. . Synthesis and characterization of cobalt-doped molybdenum carbides produced in a fixed bed reactor. CERAMICS INTERNATIONAL, v. 44, p. 20551-20555, 2018. Disponível em: https://www.sciencedirect.com/science/article/pii/S0272884218321114?via%3Dihub#!. Acesso em: 28 abr. 2021. https://doi.org/10.1016/j.ceramint.2018.08.054.
0272-8842
10.1016/j.ceramint.2018.08.054
url https://repositorio.ufrn.br/handle/123456789/32340
dc.language.iso.fl_str_mv eng
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dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRN
instname:Universidade Federal do Rio Grande do Norte (UFRN)
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instname_str Universidade Federal do Rio Grande do Norte (UFRN)
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