Synthesis, characterization and catalytic evaluation of cobalt and niobium oxide solids modified with alkaline earth metals

Autores
Pinheiro Sena, Maiana; Pereira de Lima, Simone; Santos Carvalho, Luciene; Ruiz, Doris; Ballarini, Adriana Daniela; Martins, André Rosa
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Cobalt and niobium oxide solids modified with alkaline earth metals (Mg, Ca, and Sr) were synthesized and characterized to compare the second element effect on the catalyst structural and chemical properties. The materials were prepared by co-precipitation of cobalt nitrate and niobium oxalate solutions using ammonium hydroxide as precipitating agent. The samples were characterized by XRD, SEM, Ra-man, BET, TPR, ammonia TPD and cyclohexane dehydrogenation reaction (CHD). Results showed that Mg, Ca or Sr addition changed cobalt niobate crystalline structure, leading to alkaline earth metal nio-bates with lower crystallinity. It was observed that Mg, Ca or Sr increased the solids acidity and changed cobalt niobate reduction behavior so that the lowest amount of metallic cobalt was obtained when Mg was incorporated. Modifiers also decreased cobalt niobate dehydrogenation activity. This effect was higher with Mg or Sr addition.
Fil: Pinheiro Sena, Maiana. Instituto Federal Da Bahia; Brasil
Fil: Pereira de Lima, Simone. Instituto Federal Da Bahia; Brasil
Fil: Santos Carvalho, Luciene. Instituto Federal Da Bahia; Brasil
Fil: Ruiz, Doris. Universidad de Concepción; Chile
Fil: Ballarini, Adriana Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
Fil: Martins, André Rosa. Instituto Federal Da Bahia; Brasil
Materia
COBALT NIOBATE, ALKALINE EARTH METALS
CYCLOHEXANE DEHYDROGENATION
TPR
XRD
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/145703
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/145703
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Synthesis, characterization and catalytic evaluation of cobalt and niobium oxide solids modified with alkaline earth metalsPinheiro Sena, MaianaPereira de Lima, SimoneSantos Carvalho, LucieneRuiz, DorisBallarini, Adriana DanielaMartins, André RosaCOBALT NIOBATE, ALKALINE EARTH METALSCYCLOHEXANE DEHYDROGENATIONTPRXRDhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Cobalt and niobium oxide solids modified with alkaline earth metals (Mg, Ca, and Sr) were synthesized and characterized to compare the second element effect on the catalyst structural and chemical properties. The materials were prepared by co-precipitation of cobalt nitrate and niobium oxalate solutions using ammonium hydroxide as precipitating agent. The samples were characterized by XRD, SEM, Ra-man, BET, TPR, ammonia TPD and cyclohexane dehydrogenation reaction (CHD). Results showed that Mg, Ca or Sr addition changed cobalt niobate crystalline structure, leading to alkaline earth metal nio-bates with lower crystallinity. It was observed that Mg, Ca or Sr increased the solids acidity and changed cobalt niobate reduction behavior so that the lowest amount of metallic cobalt was obtained when Mg was incorporated. Modifiers also decreased cobalt niobate dehydrogenation activity. This effect was higher with Mg or Sr addition.Fil: Pinheiro Sena, Maiana. Instituto Federal Da Bahia; BrasilFil: Pereira de Lima, Simone. Instituto Federal Da Bahia; BrasilFil: Santos Carvalho, Luciene. Instituto Federal Da Bahia; BrasilFil: Ruiz, Doris. Universidad de Concepción; ChileFil: Ballarini, Adriana Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; ArgentinaFil: Martins, André Rosa. Instituto Federal Da Bahia; BrasilUniversidade Federal do Rio de Janeiro2020-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/145703Pinheiro Sena, Maiana; Pereira de Lima, Simone; Santos Carvalho, Luciene; Ruiz, Doris; Ballarini, Adriana Daniela; et al.; Synthesis, characterization and catalytic evaluation of cobalt and niobium oxide solids modified with alkaline earth metals; Universidade Federal do Rio de Janeiro; Matéria; 25; 3; 9-2020; 1-101517-7076CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1590/s1517-707620200003.1129info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:34:51Zoai:ri.conicet.gov.ar:11336/145703instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:34:51.628CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Synthesis, characterization and catalytic evaluation of cobalt and niobium oxide solids modified with alkaline earth metals
title Synthesis, characterization and catalytic evaluation of cobalt and niobium oxide solids modified with alkaline earth metals
spellingShingle Synthesis, characterization and catalytic evaluation of cobalt and niobium oxide solids modified with alkaline earth metals
Pinheiro Sena, Maiana
COBALT NIOBATE, ALKALINE EARTH METALS
CYCLOHEXANE DEHYDROGENATION
TPR
XRD
title_short Synthesis, characterization and catalytic evaluation of cobalt and niobium oxide solids modified with alkaline earth metals
title_full Synthesis, characterization and catalytic evaluation of cobalt and niobium oxide solids modified with alkaline earth metals
title_fullStr Synthesis, characterization and catalytic evaluation of cobalt and niobium oxide solids modified with alkaline earth metals
title_full_unstemmed Synthesis, characterization and catalytic evaluation of cobalt and niobium oxide solids modified with alkaline earth metals
title_sort Synthesis, characterization and catalytic evaluation of cobalt and niobium oxide solids modified with alkaline earth metals
dc.creator.none.fl_str_mv Pinheiro Sena, Maiana
Pereira de Lima, Simone
Santos Carvalho, Luciene
Ruiz, Doris
Ballarini, Adriana Daniela
Martins, André Rosa
author Pinheiro Sena, Maiana
author_facet Pinheiro Sena, Maiana
Pereira de Lima, Simone
Santos Carvalho, Luciene
Ruiz, Doris
Ballarini, Adriana Daniela
Martins, André Rosa
author_role author
author2 Pereira de Lima, Simone
Santos Carvalho, Luciene
Ruiz, Doris
Ballarini, Adriana Daniela
Martins, André Rosa
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv COBALT NIOBATE, ALKALINE EARTH METALS
CYCLOHEXANE DEHYDROGENATION
TPR
XRD
topic COBALT NIOBATE, ALKALINE EARTH METALS
CYCLOHEXANE DEHYDROGENATION
TPR
XRD
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Cobalt and niobium oxide solids modified with alkaline earth metals (Mg, Ca, and Sr) were synthesized and characterized to compare the second element effect on the catalyst structural and chemical properties. The materials were prepared by co-precipitation of cobalt nitrate and niobium oxalate solutions using ammonium hydroxide as precipitating agent. The samples were characterized by XRD, SEM, Ra-man, BET, TPR, ammonia TPD and cyclohexane dehydrogenation reaction (CHD). Results showed that Mg, Ca or Sr addition changed cobalt niobate crystalline structure, leading to alkaline earth metal nio-bates with lower crystallinity. It was observed that Mg, Ca or Sr increased the solids acidity and changed cobalt niobate reduction behavior so that the lowest amount of metallic cobalt was obtained when Mg was incorporated. Modifiers also decreased cobalt niobate dehydrogenation activity. This effect was higher with Mg or Sr addition.
Fil: Pinheiro Sena, Maiana. Instituto Federal Da Bahia; Brasil
Fil: Pereira de Lima, Simone. Instituto Federal Da Bahia; Brasil
Fil: Santos Carvalho, Luciene. Instituto Federal Da Bahia; Brasil
Fil: Ruiz, Doris. Universidad de Concepción; Chile
Fil: Ballarini, Adriana Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
Fil: Martins, André Rosa. Instituto Federal Da Bahia; Brasil
description Cobalt and niobium oxide solids modified with alkaline earth metals (Mg, Ca, and Sr) were synthesized and characterized to compare the second element effect on the catalyst structural and chemical properties. The materials were prepared by co-precipitation of cobalt nitrate and niobium oxalate solutions using ammonium hydroxide as precipitating agent. The samples were characterized by XRD, SEM, Ra-man, BET, TPR, ammonia TPD and cyclohexane dehydrogenation reaction (CHD). Results showed that Mg, Ca or Sr addition changed cobalt niobate crystalline structure, leading to alkaline earth metal nio-bates with lower crystallinity. It was observed that Mg, Ca or Sr increased the solids acidity and changed cobalt niobate reduction behavior so that the lowest amount of metallic cobalt was obtained when Mg was incorporated. Modifiers also decreased cobalt niobate dehydrogenation activity. This effect was higher with Mg or Sr addition.
publishDate 2020
dc.date.none.fl_str_mv 2020-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/145703
Pinheiro Sena, Maiana; Pereira de Lima, Simone; Santos Carvalho, Luciene; Ruiz, Doris; Ballarini, Adriana Daniela; et al.; Synthesis, characterization and catalytic evaluation of cobalt and niobium oxide solids modified with alkaline earth metals; Universidade Federal do Rio de Janeiro; Matéria; 25; 3; 9-2020; 1-10
1517-7076
CONICET Digital
CONICET
url http://hdl.handle.net/11336/145703
identifier_str_mv Pinheiro Sena, Maiana; Pereira de Lima, Simone; Santos Carvalho, Luciene; Ruiz, Doris; Ballarini, Adriana Daniela; et al.; Synthesis, characterization and catalytic evaluation of cobalt and niobium oxide solids modified with alkaline earth metals; Universidade Federal do Rio de Janeiro; Matéria; 25; 3; 9-2020; 1-10
1517-7076
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1590/s1517-707620200003.1129
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Universidade Federal do Rio de Janeiro
publisher.none.fl_str_mv Universidade Federal do Rio de Janeiro
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844613081413451776
score 13.070432

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