Hydrothermal synthesis of Mo-V mixed oxides possessing several crystalline phases and their performance in the catalytic oxydehydration of glycerol to acrylic acid

Detalhes bibliográficos
Autor(a) principal: Rasteiro, Letícia F. [UNESP]
Data de Publicação: 2017
Outros Autores: Vieira, Luiz H. [UNESP], Possato, Luiz G. [UNESP], Pulcinelli, Sandra H. [UNESP], Santilli, Celso V. [UNESP], Martins, Leandro [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.cattod.2017.04.006
http://hdl.handle.net/11449/178799
Resumo: The one-step oxydehydration of glycerol to acrylic acid over molybdenum and vanadium mixed oxides was investigated. The Mo-V oxide catalysts were prepared by a simple hydrothermal method under different synthesis and calcination atmospheres and were characterized by in situ XRD, TPD-NH3, N2 adsorption/desorption, X-ray absorption near vanadium K-edge spectroscopy and thermogravimetry. The catalytic performance of the samples at different temperatures (290, 320 and 350 °C) and under different gas flow compositions (20% O2 in N2, 100% O2, or 100% N2) revealed that the arrangement of the crystallographic structures of the active phases directly influenced the catalytic performance. It was found that the catalysts heat-treated in oxidizing atmosphere gave superior catalytic results comparing with the catalysts heat-treated in inert atmosphere due to the equilibrium between the crystalline phases MoVO5 and Mo4.65V0.35O14 that contains V+4 and V+5. Catalytic oxydehydration at 320 °C under a flow of 100% O2 gave the best performance, achieving selectivity of 33.5% towards acrylic acid and 100% conversion of glycerol.
id UNSP_ca37de035daf80ae68ab48fbffa1a593
oai_identifier_str oai:repositorio.unesp.br:11449/178799
network_acronym_str UNSP
network_name_str Repositório Institucional da UNESP
repository_id_str 2946
spelling Hydrothermal synthesis of Mo-V mixed oxides possessing several crystalline phases and their performance in the catalytic oxydehydration of glycerol to acrylic acidAcrylic acidBifunctional catalystsGlycerol oxydehydrationHydrothermal synthesisMolybdenum-vanadium mixed oxidesThe one-step oxydehydration of glycerol to acrylic acid over molybdenum and vanadium mixed oxides was investigated. The Mo-V oxide catalysts were prepared by a simple hydrothermal method under different synthesis and calcination atmospheres and were characterized by in situ XRD, TPD-NH3, N2 adsorption/desorption, X-ray absorption near vanadium K-edge spectroscopy and thermogravimetry. The catalytic performance of the samples at different temperatures (290, 320 and 350 °C) and under different gas flow compositions (20% O2 in N2, 100% O2, or 100% N2) revealed that the arrangement of the crystallographic structures of the active phases directly influenced the catalytic performance. It was found that the catalysts heat-treated in oxidizing atmosphere gave superior catalytic results comparing with the catalysts heat-treated in inert atmosphere due to the equilibrium between the crystalline phases MoVO5 and Mo4.65V0.35O14 that contains V+4 and V+5. Catalytic oxydehydration at 320 °C under a flow of 100% O2 gave the best performance, achieving selectivity of 33.5% towards acrylic acid and 100% conversion of glycerol.Instituto de Química UNESP—Universidade Estadual Paulista, Rua Prof. Francisco Degni 55Instituto de Química UNESP—Universidade Estadual Paulista, Rua Prof. Francisco Degni 55Universidade Estadual Paulista (Unesp)Rasteiro, Letícia F. [UNESP]Vieira, Luiz H. [UNESP]Possato, Luiz G. [UNESP]Pulcinelli, Sandra H. [UNESP]Santilli, Celso V. [UNESP]Martins, Leandro [UNESP]2018-12-11T17:32:09Z2018-12-11T17:32:09Z2017-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10-18application/pdfhttp://dx.doi.org/10.1016/j.cattod.2017.04.006Catalysis Today, v. 296, p. 10-18.0920-5861http://hdl.handle.net/11449/17879910.1016/j.cattod.2017.04.0062-s2.0-850174494272-s2.0-85017449427.pdf55842986818708650000-0002-8356-8093Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCatalysis Today1,347info:eu-repo/semantics/openAccess2023-11-29T06:11:30Zoai:repositorio.unesp.br:11449/178799Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:59:45.289372Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Hydrothermal synthesis of Mo-V mixed oxides possessing several crystalline phases and their performance in the catalytic oxydehydration of glycerol to acrylic acid
title Hydrothermal synthesis of Mo-V mixed oxides possessing several crystalline phases and their performance in the catalytic oxydehydration of glycerol to acrylic acid
spellingShingle Hydrothermal synthesis of Mo-V mixed oxides possessing several crystalline phases and their performance in the catalytic oxydehydration of glycerol to acrylic acid
Rasteiro, Letícia F. [UNESP]
Acrylic acid
Bifunctional catalysts
Glycerol oxydehydration
Hydrothermal synthesis
Molybdenum-vanadium mixed oxides
title_short Hydrothermal synthesis of Mo-V mixed oxides possessing several crystalline phases and their performance in the catalytic oxydehydration of glycerol to acrylic acid
title_full Hydrothermal synthesis of Mo-V mixed oxides possessing several crystalline phases and their performance in the catalytic oxydehydration of glycerol to acrylic acid
title_fullStr Hydrothermal synthesis of Mo-V mixed oxides possessing several crystalline phases and their performance in the catalytic oxydehydration of glycerol to acrylic acid
title_full_unstemmed Hydrothermal synthesis of Mo-V mixed oxides possessing several crystalline phases and their performance in the catalytic oxydehydration of glycerol to acrylic acid
title_sort Hydrothermal synthesis of Mo-V mixed oxides possessing several crystalline phases and their performance in the catalytic oxydehydration of glycerol to acrylic acid
author Rasteiro, Letícia F. [UNESP]
author_facet Rasteiro, Letícia F. [UNESP]
Vieira, Luiz H. [UNESP]
Possato, Luiz G. [UNESP]
Pulcinelli, Sandra H. [UNESP]
Santilli, Celso V. [UNESP]
Martins, Leandro [UNESP]
author_role author
author2 Vieira, Luiz H. [UNESP]
Possato, Luiz G. [UNESP]
Pulcinelli, Sandra H. [UNESP]
Santilli, Celso V. [UNESP]
Martins, Leandro [UNESP]
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Rasteiro, Letícia F. [UNESP]
Vieira, Luiz H. [UNESP]
Possato, Luiz G. [UNESP]
Pulcinelli, Sandra H. [UNESP]
Santilli, Celso V. [UNESP]
Martins, Leandro [UNESP]
dc.subject.por.fl_str_mv Acrylic acid
Bifunctional catalysts
Glycerol oxydehydration
Hydrothermal synthesis
Molybdenum-vanadium mixed oxides
topic Acrylic acid
Bifunctional catalysts
Glycerol oxydehydration
Hydrothermal synthesis
Molybdenum-vanadium mixed oxides
description The one-step oxydehydration of glycerol to acrylic acid over molybdenum and vanadium mixed oxides was investigated. The Mo-V oxide catalysts were prepared by a simple hydrothermal method under different synthesis and calcination atmospheres and were characterized by in situ XRD, TPD-NH3, N2 adsorption/desorption, X-ray absorption near vanadium K-edge spectroscopy and thermogravimetry. The catalytic performance of the samples at different temperatures (290, 320 and 350 °C) and under different gas flow compositions (20% O2 in N2, 100% O2, or 100% N2) revealed that the arrangement of the crystallographic structures of the active phases directly influenced the catalytic performance. It was found that the catalysts heat-treated in oxidizing atmosphere gave superior catalytic results comparing with the catalysts heat-treated in inert atmosphere due to the equilibrium between the crystalline phases MoVO5 and Mo4.65V0.35O14 that contains V+4 and V+5. Catalytic oxydehydration at 320 °C under a flow of 100% O2 gave the best performance, achieving selectivity of 33.5% towards acrylic acid and 100% conversion of glycerol.
publishDate 2017
dc.date.none.fl_str_mv 2017-01-01
2018-12-11T17:32:09Z
2018-12-11T17:32:09Z
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://dx.doi.org/10.1016/j.cattod.2017.04.006
Catalysis Today, v. 296, p. 10-18.
0920-5861
http://hdl.handle.net/11449/178799
10.1016/j.cattod.2017.04.006
2-s2.0-85017449427
2-s2.0-85017449427.pdf
5584298681870865
0000-0002-8356-8093
url http://dx.doi.org/10.1016/j.cattod.2017.04.006
http://hdl.handle.net/11449/178799
identifier_str_mv Catalysis Today, v. 296, p. 10-18.
0920-5861
10.1016/j.cattod.2017.04.006
2-s2.0-85017449427
2-s2.0-85017449427.pdf
5584298681870865
0000-0002-8356-8093
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Catalysis Today
1,347
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 10-18
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808129010107940864

Registros relacionados