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Preparation, Characterization, and Activity of Pd/PSS-Modified Membranes in the Low Temperature Dry Reforming of Methane with and without Addition of Extra Steam

The external surface of a commercial porous stainless steel (PSS) was modified by either oxidation in air at varying temperatures (600, 700, and 800 °C) or coating with different oxides (SiO(2), Al(2)O(3), and ZrO(2)). Among them, PSS-ZrO(2) appears as the most suitable carrier for the synthesis of...

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Autores principales: Mateos-Pedrero, Cecilia, Soria, Miguel A., Guerrero-Ruíz, Antonio, Rodríguez-Ramos, Inmaculada
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8307832/
https://www.ncbi.nlm.nih.gov/pubmed/34357168
http://dx.doi.org/10.3390/membranes11070518
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author Mateos-Pedrero, Cecilia
Soria, Miguel A.
Guerrero-Ruíz, Antonio
Rodríguez-Ramos, Inmaculada
author_facet Mateos-Pedrero, Cecilia
Soria, Miguel A.
Guerrero-Ruíz, Antonio
Rodríguez-Ramos, Inmaculada
author_sort Mateos-Pedrero, Cecilia
collection PubMed
description The external surface of a commercial porous stainless steel (PSS) was modified by either oxidation in air at varying temperatures (600, 700, and 800 °C) or coating with different oxides (SiO(2), Al(2)O(3), and ZrO(2)). Among them, PSS-ZrO(2) appears as the most suitable carrier for the synthesis of the Pd membrane. A composite Pd membrane supported on the PSS-ZrO(2) substrate was prepared by the electroless plating deposition method. Supported Ru catalysts were first evaluated for the low-temperature methane dry reforming (DRM) reaction in a continuous flow reactor (CR). Ru/ZrO(2)-La(2)O(3) catalyst was found to be active and stable, so it was used in a membrane reactor (MR), which enhances the methane conversions above the equilibrium values. The influence of adding H(2)O to the feed of DRM was investigated over a Ru/ZrO(2)-La(2)O(3) catalyst in the MR. Activity results are compared with those measured in a CR. The addition of H(2)O into the feed favors other reactions such as Water-Gas Shift (RWGS) and Steam Reforming (SR), which occur together with DRM, resulting in a dramatic decrease of CO(2) conversion and CO production, but a marked increase of H(2) yield.
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spelling pubmed-83078322021-07-25 Preparation, Characterization, and Activity of Pd/PSS-Modified Membranes in the Low Temperature Dry Reforming of Methane with and without Addition of Extra Steam Mateos-Pedrero, Cecilia Soria, Miguel A. Guerrero-Ruíz, Antonio Rodríguez-Ramos, Inmaculada Membranes (Basel) Article The external surface of a commercial porous stainless steel (PSS) was modified by either oxidation in air at varying temperatures (600, 700, and 800 °C) or coating with different oxides (SiO(2), Al(2)O(3), and ZrO(2)). Among them, PSS-ZrO(2) appears as the most suitable carrier for the synthesis of the Pd membrane. A composite Pd membrane supported on the PSS-ZrO(2) substrate was prepared by the electroless plating deposition method. Supported Ru catalysts were first evaluated for the low-temperature methane dry reforming (DRM) reaction in a continuous flow reactor (CR). Ru/ZrO(2)-La(2)O(3) catalyst was found to be active and stable, so it was used in a membrane reactor (MR), which enhances the methane conversions above the equilibrium values. The influence of adding H(2)O to the feed of DRM was investigated over a Ru/ZrO(2)-La(2)O(3) catalyst in the MR. Activity results are compared with those measured in a CR. The addition of H(2)O into the feed favors other reactions such as Water-Gas Shift (RWGS) and Steam Reforming (SR), which occur together with DRM, resulting in a dramatic decrease of CO(2) conversion and CO production, but a marked increase of H(2) yield. MDPI 2021-07-09 /pmc/articles/PMC8307832/ /pubmed/34357168 http://dx.doi.org/10.3390/membranes11070518 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mateos-Pedrero, Cecilia
Soria, Miguel A.
Guerrero-Ruíz, Antonio
Rodríguez-Ramos, Inmaculada
Preparation, Characterization, and Activity of Pd/PSS-Modified Membranes in the Low Temperature Dry Reforming of Methane with and without Addition of Extra Steam
title Preparation, Characterization, and Activity of Pd/PSS-Modified Membranes in the Low Temperature Dry Reforming of Methane with and without Addition of Extra Steam
title_full Preparation, Characterization, and Activity of Pd/PSS-Modified Membranes in the Low Temperature Dry Reforming of Methane with and without Addition of Extra Steam
title_fullStr Preparation, Characterization, and Activity of Pd/PSS-Modified Membranes in the Low Temperature Dry Reforming of Methane with and without Addition of Extra Steam
title_full_unstemmed Preparation, Characterization, and Activity of Pd/PSS-Modified Membranes in the Low Temperature Dry Reforming of Methane with and without Addition of Extra Steam
title_short Preparation, Characterization, and Activity of Pd/PSS-Modified Membranes in the Low Temperature Dry Reforming of Methane with and without Addition of Extra Steam
title_sort preparation, characterization, and activity of pd/pss-modified membranes in the low temperature dry reforming of methane with and without addition of extra steam
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8307832/
https://www.ncbi.nlm.nih.gov/pubmed/34357168
http://dx.doi.org/10.3390/membranes11070518
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