Go to:
Logótipo
Comuta visibilidade da coluna esquerda
Você está em: Start > Publications > View > Dynamic Structure and Subsurface Oxygen Formation of a Working Copper Catalyst under Methanol Steam Reforming Conditions: An in Situ Time-Resolved Spectroscopic Study. ACS Catalysis
Publication

Publications

Dynamic Structure and Subsurface Oxygen Formation of a Working Copper Catalyst under Methanol Steam Reforming Conditions: An in Situ Time-Resolved Spectroscopic Study. ACS Catalysis

Title
Dynamic Structure and Subsurface Oxygen Formation of a Working Copper Catalyst under Methanol Steam Reforming Conditions: An in Situ Time-Resolved Spectroscopic Study. ACS Catalysis
Type
Article in International Scientific Journal
Year
2019-02-18
Authors
Daniel Ruano
(Author)
Other
The person does not belong to the institution. The person does not belong to the institution. The person does not belong to the institution. Without AUTHENTICUS Without ORCID
Jorge Cored
(Author)
Other
The person does not belong to the institution. The person does not belong to the institution. The person does not belong to the institution. Without AUTHENTICUS Without ORCID
Cátia Azenha
(Author)
Other
View Personal Page You do not have permissions to view the institutional email. Search for Participant Publications View Authenticus page Without ORCID
Virginia Pérez-Dieste
(Author)
Other
The person does not belong to the institution. The person does not belong to the institution. The person does not belong to the institution. Without AUTHENTICUS Without ORCID
Adélio Mendes
(Author)
FEUP
View Personal Page You do not have permissions to view the institutional email. Search for Participant Publications View Authenticus page View ORCID page
Cecilia Mateos-Pedrero
(Author)
FEUP
View Personal Page You do not have permissions to view the institutional email. Search for Participant Publications View Authenticus page View ORCID page
Patricia Concepción
(Author)
Other
The person does not belong to the institution. The person does not belong to the institution. The person does not belong to the institution. Without AUTHENTICUS Without ORCID
Journal
Title: Acs CatalysisImported from Authenticus Search for Journal Publications
Vol. 9 No. 4
Pages: 2922-2930
ISSN: 2155-5435
Indexing
Publicação em ISI Web of Knowledge ISI Web of Knowledge - 0 Citations
Publicação em ISI Web of Science ISI Web of Science
Other information
Authenticus ID: P-00Q-BA0
Resumo (PT):
Abstract (EN): The dynamic behavior of a CuO/ZnO/Ga2O3 catalyst under methanol steam reforming (MSR) reaction conditions promoted by a high dispersion of the copper nanoparticles and defect sites of a nonstoichiometric ZnGa2O4 spinel phase has been observed, where structural changes taking place in the initial state of the reaction determine the final state of the catalyst in stationary reaction conditions. Mass spectrometry (MS) studies under transient conditions coupled to X-ray photoelectron spectroscopy (XPS) have shown copper oxidation to Cu+ in the initial state of the reaction (TOS = 4 min), followed by a fast reduction of the outer shell to Cu-0, while keeping dissolved oxygen species in the inner layers of the nanoparticle. The presence of this subsurface oxygen impairs a positive charge to the uppermost surface copper species, that is, Cu delta+, which undoubtedly plays an important role on the MSR catalytic activity. The detection of these features, unperceived by conventional spectroscopic and catalytic studies, has only been possible by combining synchrotron NAP-XPS studies with transient studies performed in a low volume catalytic reactor connected to MS and linked with Raman and laboratory scale XPS studies.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 9
Documents
We could not find any documents associated to the publication with allowed access.
Related Publications

Of the same journal

Unveiling the Catalytic Mechanism of NADP(+)-Dependent Isocitrate Dehydrogenase with QM/MM Calculations (2016)
Article in International Scientific Journal
Neves, RPP; Pedro A Fernandes; Ramos, MJ
Understanding the Catalytic Machinery and the Reaction Pathway of the Malonyl-Acetyl Transferase Domain of Human Fatty Acid Synthase (2018)
Article in International Scientific Journal
Paiva, P; Sergio Filipe Sousa; Ramos, MJ; Pedro A Fernandes
Relationship between Enzyme/Substrate Properties and Enzyme Efficiency in Hydrolases (2015)
Article in International Scientific Journal
Sergio F Sousa; Maria J Ramos; Carmay Lim; Pedro A Fernandes
Reaction Mechanism of the PET Degrading Enzyme PETase Studied with DFT/MM Molecular Dynamics Simulations (2021)
Article in International Scientific Journal
Jerves, C; Neves, RPP; Ramos, MJ; da Silva, S; Pedro A Fernandes
Reaction Mechanism of MHETase, a PET Degrading Enzyme (2021)
Article in International Scientific Journal
Pinto, AV; Pedro Moradas Ferreira; Neves, RPP; Pedro A Fernandes; Ramos, MJ; Magalhaes, AL

See all (21)

Recommend this page Top
Copyright 1996-2025 © Faculdade de Direito da Universidade do Porto  I Terms and Conditions  I Acessibility  I Index A-Z
Page created on: 2025-08-09 at 10:32:46 | Privacy Policy | Personal Data Protection Policy | Whistleblowing