Properties and phase composition of Ni–MgO–La2O3 systems submitted to different thermal treatments

Detalhes bibliográficos
Autor(a) principal: Moura, Jadson Santos
Data de Publicação: 2012
Outros Autores: Lima, Robson Santana, Araújo, Genira Carneiro de, Mateus, Viviana de Oliveira, Souza, Marluce Oliveira da Guarda
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/15241
Resumo: Texto completo: acesso restrito. p. 1084–1088
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spelling Moura, Jadson SantosLima, Robson SantanaAraújo, Genira Carneiro deMateus, Viviana de OliveiraSouza, Marluce Oliveira da GuardaMoura, Jadson SantosLima, Robson SantanaAraújo, Genira Carneiro deMateus, Viviana de OliveiraSouza, Marluce Oliveira da Guarda2014-07-21T12:52:24Z20120254-0584http://repositorio.ufba.br/ri/handle/ri/15241v. 135, n. 2Texto completo: acesso restrito. p. 1084–1088This work investigated the properties and phase composition of nickel-based systems supported on mixed oxides of lanthanum and magnesium (in different proportions) that were submitted to different thermal treatments. Catalysts were obtained by co-precipitation and were characterised using different techniques. The diffractograms of the nickel and lanthanum oxide catalysts show more intense peaks associated with a perovskite-type phase. The presence of magnesium leads to a decrease in the intensity of the peaks that correspond to the perovskite phase. The mixed system showed a higher specific surface area compared with that of the system formed by nickel and lanthanum oxides. The specific surface area of the mixed system was proportional to the magnesium content. The reduction profiles showed interactions in these systems. Metallic nickel is formed at temperatures greater than 873 K after reduction with hydrogen. The La2O2CO3 phase is formed under hydrogen-production reaction conditions. In conclusion, the systems formed by nickel, lanthanum and magnesium exhibit properties that render them suitable for application in hydrogen production reactions.Submitted by Edileide Reis (leyde-landy@hotmail.com) on 2014-07-21T12:52:24Z No. of bitstreams: 1 Jadson Santos Moura.pdf: 489912 bytes, checksum: 022f1496924fd01542242511b522964d (MD5)Made available in DSpace on 2014-07-21T12:52:24Z (GMT). No. of bitstreams: 1 Jadson Santos Moura.pdf: 489912 bytes, checksum: 022f1496924fd01542242511b522964d (MD5) Previous issue date: 2012http://dx.doi.org/ 10.1016/j.matchemphys.2012.06.021reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAMixed systemNickel CatalystLantanum oxideMagnesium oxideProperties and phase composition of Ni–MgO–La2O3 systems submitted to different thermal treatmentsMaterials Chemistry and Physicsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01info:eu-repo/semantics/openAccessengORIGINALJadson Santos Moura.pdfJadson Santos Moura.pdfapplication/pdf489912https://repositorio.ufba.br/bitstream/ri/15241/1/Jadson%20Santos%20Moura.pdf022f1496924fd01542242511b522964dMD51LICENSElicense.txtlicense.txttext/plain1345https://repositorio.ufba.br/bitstream/ri/15241/2/license.txt0d4b811ef71182510d2015daa7c8a900MD52TEXTJadson Santos Moura.pdf.txtJadson Santos Moura.pdf.txtExtracted texttext/plain22749https://repositorio.ufba.br/bitstream/ri/15241/3/Jadson%20Santos%20Moura.pdf.txtbbaec41454d37246991c5c21412bbfc8MD53ri/152412022-07-05 14:03:31.684oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:31Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Properties and phase composition of Ni–MgO–La2O3 systems submitted to different thermal treatments
dc.title.alternative.pt_BR.fl_str_mv Materials Chemistry and Physics
title Properties and phase composition of Ni–MgO–La2O3 systems submitted to different thermal treatments
spellingShingle Properties and phase composition of Ni–MgO–La2O3 systems submitted to different thermal treatments
Moura, Jadson Santos
Mixed system
Nickel Catalyst
Lantanum oxide
Magnesium oxide
title_short Properties and phase composition of Ni–MgO–La2O3 systems submitted to different thermal treatments
title_full Properties and phase composition of Ni–MgO–La2O3 systems submitted to different thermal treatments
title_fullStr Properties and phase composition of Ni–MgO–La2O3 systems submitted to different thermal treatments
title_full_unstemmed Properties and phase composition of Ni–MgO–La2O3 systems submitted to different thermal treatments
title_sort Properties and phase composition of Ni–MgO–La2O3 systems submitted to different thermal treatments
author Moura, Jadson Santos
author_facet Moura, Jadson Santos
Lima, Robson Santana
Araújo, Genira Carneiro de
Mateus, Viviana de Oliveira
Souza, Marluce Oliveira da Guarda
author_role author
author2 Lima, Robson Santana
Araújo, Genira Carneiro de
Mateus, Viviana de Oliveira
Souza, Marluce Oliveira da Guarda
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Moura, Jadson Santos
Lima, Robson Santana
Araújo, Genira Carneiro de
Mateus, Viviana de Oliveira
Souza, Marluce Oliveira da Guarda
Moura, Jadson Santos
Lima, Robson Santana
Araújo, Genira Carneiro de
Mateus, Viviana de Oliveira
Souza, Marluce Oliveira da Guarda
dc.subject.por.fl_str_mv Mixed system
Nickel Catalyst
Lantanum oxide
Magnesium oxide
topic Mixed system
Nickel Catalyst
Lantanum oxide
Magnesium oxide
description Texto completo: acesso restrito. p. 1084–1088
publishDate 2012
dc.date.issued.fl_str_mv 2012
dc.date.accessioned.fl_str_mv 2014-07-21T12:52:24Z
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.uri.fl_str_mv http://repositorio.ufba.br/ri/handle/ri/15241
dc.identifier.issn.none.fl_str_mv 0254-0584
dc.identifier.number.pt_BR.fl_str_mv v. 135, n. 2
identifier_str_mv 0254-0584
v. 135, n. 2
url http://repositorio.ufba.br/ri/handle/ri/15241
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.pt_BR.fl_str_mv http://dx.doi.org/ 10.1016/j.matchemphys.2012.06.021
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
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