Pr3+ surface fraction in CePr mixed oxides determined by XPS analysis

CePr mixed oxides were previously studied as supports for Water Gas Shift catalysts, considering their promising textural and redox properties arising from the presence of a non-stoichiometric oxide. A very small Ce3+ fraction was observed on those oxides, suggesting that Pr3+ion could be responsibl...

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Detalles Bibliográficos
Publicado: 2018
Materias:
Oxidation state
Pr
XPS
Binary alloys
Cerium alloys
D region
Ions
Praseodymium
Water gas shift
X ray photoelectron spectroscopy
Mixed oxide
Non-stoichiometric
Pr ions
Redox property
Surface fraction
Water gas shift catalysts
XPS analysis
Praseodymium alloys
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03682048_v222_n_p1_PoggioFraccari
http://hdl.handle.net/20.500.12110/paper_03682048_v222_n_p1_PoggioFraccari
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_03682048_v222_n_p1_PoggioFraccari
record_format dspace
spelling paper:paper_03682048_v222_n_p1_PoggioFraccari2023-06-08T15:36:12Z Pr3+ surface fraction in CePr mixed oxides determined by XPS analysis Oxidation state Pr XPS Binary alloys Cerium alloys D region Ions Praseodymium Water gas shift X ray photoelectron spectroscopy Mixed oxide Non-stoichiometric Oxidation state Pr ions Redox property Surface fraction Water gas shift catalysts XPS analysis Praseodymium alloys CePr mixed oxides were previously studied as supports for Water Gas Shift catalysts, considering their promising textural and redox properties arising from the presence of a non-stoichiometric oxide. A very small Ce3+ fraction was observed on those oxides, suggesting that Pr3+ion could be responsible for the enhanced activity. Therefore, in-depth XPS analysis is conducted in the present work in order to determine the Pr3+ fraction by fitting the XPS Pr 3d region. Much higher values of reduced Pr ions than Ce ions were observed, confirming the promoter role of the former. © 2017 Elsevier B.V. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03682048_v222_n_p1_PoggioFraccari http://hdl.handle.net/20.500.12110/paper_03682048_v222_n_p1_PoggioFraccari
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Oxidation state
Pr
XPS
Binary alloys
Cerium alloys
D region
Ions
Praseodymium
Water gas shift
X ray photoelectron spectroscopy
Mixed oxide
Non-stoichiometric
Oxidation state
Pr ions
Redox property
Surface fraction
Water gas shift catalysts
XPS analysis
Praseodymium alloys
spellingShingle Oxidation state
Pr
XPS
Binary alloys
Cerium alloys
D region
Ions
Praseodymium
Water gas shift
X ray photoelectron spectroscopy
Mixed oxide
Non-stoichiometric
Oxidation state
Pr ions
Redox property
Surface fraction
Water gas shift catalysts
XPS analysis
Praseodymium alloys
Pr3+ surface fraction in CePr mixed oxides determined by XPS analysis
topic_facet Oxidation state
Pr
XPS
Binary alloys
Cerium alloys
D region
Ions
Praseodymium
Water gas shift
X ray photoelectron spectroscopy
Mixed oxide
Non-stoichiometric
Oxidation state
Pr ions
Redox property
Surface fraction
Water gas shift catalysts
XPS analysis
Praseodymium alloys
description CePr mixed oxides were previously studied as supports for Water Gas Shift catalysts, considering their promising textural and redox properties arising from the presence of a non-stoichiometric oxide. A very small Ce3+ fraction was observed on those oxides, suggesting that Pr3+ion could be responsible for the enhanced activity. Therefore, in-depth XPS analysis is conducted in the present work in order to determine the Pr3+ fraction by fitting the XPS Pr 3d region. Much higher values of reduced Pr ions than Ce ions were observed, confirming the promoter role of the former. © 2017 Elsevier B.V.
title Pr3+ surface fraction in CePr mixed oxides determined by XPS analysis
title_short Pr3+ surface fraction in CePr mixed oxides determined by XPS analysis
title_full Pr3+ surface fraction in CePr mixed oxides determined by XPS analysis
title_fullStr Pr3+ surface fraction in CePr mixed oxides determined by XPS analysis
title_full_unstemmed Pr3+ surface fraction in CePr mixed oxides determined by XPS analysis
title_sort pr3+ surface fraction in cepr mixed oxides determined by xps analysis
publishDate 2018
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03682048_v222_n_p1_PoggioFraccari
http://hdl.handle.net/20.500.12110/paper_03682048_v222_n_p1_PoggioFraccari
_version_ 1768542989643153408

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