Appraisal of Ni Species Supported on Porous MgO during Ethanol Steam Reforming by XAS

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorL'Orme des Merisiers BP48-
Autor(es): dc.creatorPossato, Luiz G.-
Autor(es): dc.creatorPulcinelli, Sandra H.-
Autor(es): dc.creatorMartins, Leandro-
Autor(es): dc.creatorBriois, Valerie-
Autor(es): dc.creatorSantilli, Celso V.-
Data de aceite: dc.date.accessioned2025-08-21T20:55:18Z-
Data de disponibilização: dc.date.available2025-08-21T20:55:18Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2022-11-07-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1002/cctc.202200684-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/249281-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/249281-
Descrição: dc.descriptionOperando time-resolved X-ray absorption spectroscopy (XAS) was used to determine nickel species supported on porous MgO during the ethanol steam reforming reaction. The Principal Component Analysis (PCA) of the nickel K-edge XAS spectra revealed Ni(OH)2, NiMgO, and metallic Ni during the activation and reaction of the catalysts. The Multivariate Curve Resolution-Alternating Least Squares (MCR-ALS) method for the time-resolved XAS spectra data permitted to calculate the concentration of species during the activation and reaction steps and to determine the formation of NiMgO and nickel reduction degree. The samples prepared with surfactants, Ni10MgO-F127 and Ni10MgO-P123, showed less nickel reduction (less than 30 %) but were more active and stable than the reference Ni10MgO catalyst, which reduced 52 %. It happened due to the smaller particle size and a larger specific area of the porous supports. The samples synthesized without Pluronic deactivated, and ethanol dehydrogenation became predominant instead of the ethanol steam reforming.-
Descrição: dc.descriptionInstituto de Química Unesp-Universidade Estadual Paulista, Rua Prof. Francisco Degni 55, SP-
Descrição: dc.descriptionSynchrotron SOLEIL L'Orme des Merisiers BP48-
Descrição: dc.descriptionInstituto de Química Unesp-Universidade Estadual Paulista, Rua Prof. Francisco Degni 55, SP-
Idioma: dc.languageen-
Relação: dc.relationChemCatChem-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectethanol steam reforming-
Palavras-chave: dc.subjecthydrogen-
Palavras-chave: dc.subjectMgO-
Palavras-chave: dc.subjectnickel-
Palavras-chave: dc.subjectTime-resolved XAS-
Título: dc.titleAppraisal of Ni Species Supported on Porous MgO during Ethanol Steam Reforming by XAS-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.