A thorium-doped catalyst for the high temperature shift reaction

The reforming of natural gas feedstock in the presence of steam is the main industrial route to produce high purity hydrogen. However, this process also produces carbon oxides which can poison most hydrogenation catalysts as well as ammonia catalysts. In industrial processes, these compounds are oft...

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Detalhes bibliográficos
Autores: Rangel Costa, João Luı́s, Marchetti, Sergio Gustavo, Carmo Rangel, Maria do
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2002
País:Argentina
Recursos:Universidad Nacional de La Plata
Repositorio:SEDICI (UNLP)
Idioma:inglés
OAI Identifier:oai:sedici.unlp.edu.ar:10915/142008
Acesso em linha:http://sedici.unlp.edu.ar/handle/10915/142008
Access Level:acceso abierto
Palavra-chave:Química
Shift reaction
Thorium-doped magnetite
Hydrogen production
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spelling A thorium-doped catalyst for the high temperature shift reactionRangel Costa, João Luı́sMarchetti, Sergio GustavoCarmo Rangel, Maria doQuímicaShift reactionThorium-doped magnetiteHydrogen productionThe reforming of natural gas feedstock in the presence of steam is the main industrial route to produce high purity hydrogen. However, this process also produces carbon oxides which can poison most hydrogenation catalysts as well as ammonia catalysts. In industrial processes, these compounds are often removed from the gaseous stream by the water gas shift reaction (WGSR), which is performed in two steps due to thermodynamics and kinetics considerations. A chromium and copper-doped hematite has been recently proposed as an industrial catalyst in the high temperature shift (HTS). This solid shows a stable performance but the search for non-toxic systems is much needed due to environmental restrictions related to chromium compounds. In this work, the use of thorium instead of chromium in iron- and copper-based catalysts for the HTS reaction was investigated. Catalysts were prepared in the active form (magnetite) in order to save energy, characterized by several techniques and then evaluated in operational conditions close to the industrial ones. It was found that thorium can replace chromium in these catalysts leading to better catalytic properties as compared to chromium. The catalyst has the advantage of being less toxic and can be prepared in the active phase.Centro de Investigación y Desarrollo en Ciencias Aplicadas2002-12-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf205-213http://sedici.unlp.edu.ar/handle/10915/142008enginfo:eu-repo/semantics/altIdentifier/issn/0920-5861info:eu-repo/semantics/altIdentifier/doi/10.1016/s0920-5861(02)00246-8info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2024-05-08T13:10:19Zoai:sedici.unlp.edu.ar:10915/142008Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292024-05-08 13:10:20.208SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv A thorium-doped catalyst for the high temperature shift reaction
title A thorium-doped catalyst for the high temperature shift reaction
spellingShingle A thorium-doped catalyst for the high temperature shift reaction
Rangel Costa, João Luı́s
Química
Shift reaction
Thorium-doped magnetite
Hydrogen production
title_short A thorium-doped catalyst for the high temperature shift reaction
title_full A thorium-doped catalyst for the high temperature shift reaction
title_fullStr A thorium-doped catalyst for the high temperature shift reaction
title_full_unstemmed A thorium-doped catalyst for the high temperature shift reaction
title_sort A thorium-doped catalyst for the high temperature shift reaction
dc.creator.none.fl_str_mv Rangel Costa, João Luı́s
Marchetti, Sergio Gustavo
Carmo Rangel, Maria do
author Rangel Costa, João Luı́s
author_facet Rangel Costa, João Luı́s
Marchetti, Sergio Gustavo
Carmo Rangel, Maria do
author_role author
author2 Marchetti, Sergio Gustavo
Carmo Rangel, Maria do
author2_role author
author
dc.subject.none.fl_str_mv Química
Shift reaction
Thorium-doped magnetite
Hydrogen production
topic Química
Shift reaction
Thorium-doped magnetite
Hydrogen production
description The reforming of natural gas feedstock in the presence of steam is the main industrial route to produce high purity hydrogen. However, this process also produces carbon oxides which can poison most hydrogenation catalysts as well as ammonia catalysts. In industrial processes, these compounds are often removed from the gaseous stream by the water gas shift reaction (WGSR), which is performed in two steps due to thermodynamics and kinetics considerations. A chromium and copper-doped hematite has been recently proposed as an industrial catalyst in the high temperature shift (HTS). This solid shows a stable performance but the search for non-toxic systems is much needed due to environmental restrictions related to chromium compounds. In this work, the use of thorium instead of chromium in iron- and copper-based catalysts for the HTS reaction was investigated. Catalysts were prepared in the active form (magnetite) in order to save energy, characterized by several techniques and then evaluated in operational conditions close to the industrial ones. It was found that thorium can replace chromium in these catalysts leading to better catalytic properties as compared to chromium. The catalyst has the advantage of being less toxic and can be prepared in the active phase.
publishDate 2002
dc.date.none.fl_str_mv 2002-12-15
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/142008
url http://sedici.unlp.edu.ar/handle/10915/142008
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0920-5861
info:eu-repo/semantics/altIdentifier/doi/10.1016/s0920-5861(02)00246-8
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
205-213
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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