High-temperature CO2 capture by Li4SiO4 sorbents: effect of CO2 concentration and cyclic performance under representative conditions

10 Figuras, 1 Tabla

Detalles Bibliográficos
Autores: Izquierdo Pantoja, María Teresa, Saleh, Ahmed, Sánchez Fernández, Eva, Maroto Valer, Mercedes, García, S.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2018
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/185107
Acceso en línea:http://hdl.handle.net/10261/185107
Access Level:acceso abierto
Palabra clave:CO2 capture
Li-based sorbents
id ES_b4ba9d2df8b89bfbc30606a72a67802a
oai_identifier_str oai:digital.csic.es:10261/185107
network_acronym_str ES
network_name_str España
repository_id_str
spelling High-temperature CO2 capture by Li4SiO4 sorbents: effect of CO2 concentration and cyclic performance under representative conditionsIzquierdo Pantoja, María TeresaSaleh, AhmedSánchez Fernández, EvaMaroto Valer, MercedesGarcía, S.CO2 captureLi-based sorbents10 Figuras, 1 TablaThis study investigates CO2 capture on in-house-prepared Li4SiO4, a commercial Li4SiO4, and a commercial-derived CaO under the same experimental conditions in order to compare their performance with emphasis on the in-house-prepared Li4SiO4. The selected commercial Li4SiO4 was unsuitable for CO2 absorption–emission due to the insignificant CO2 uptake after regeneration. The commercial-derived CaO absorbs 41 wt %, which was the highest CO2 uptake among the studied samples. However, this sample underwent a severe decay after 12 carbonation–regeneration cycles despite the mild regeneration conditions used (700 °C under N2), reaching an almost constant CO2 uptake value (10 wt % after 18 cycles). The in-house-prepared Li4SiO4 absorbs 30 wt %, which was near the theoretical CO2 uptake for Li4SiO4. After an initial loss of CO2 uptake from near 30% to 26%, the performance of in-house-prepared Li4SiO4 was maintained after 16 cycles under the same conditions as those used for CaO. The effect of CO2 concentration on CO2 uptake was to obtain the inversion temperature for practical CO2 concentrations. Due to the significant differences among inversion temperatures from different equilibrium plots, experimental inversion temperatures were obtained by the temperature-programmed technique for absorption under a CO2 concentration of 4% and for emission under a CO2 concentration of 70%, giving 525 and 660 °C, respectively. A cyclic test was conducted with in-house-prepared Li4SiO4: absorption at 520 °C under a CO2 concentration of 4% and regeneration at 675 °C under a CO2 concentration of 70%. Under these mild thermal conditions the sample did not exhibit a CO2 uptake decay, indicating that this sorbent could be efficiently used for high-temperature CO2 capture from power plant flue gas.Financial support of the Research Centre for Carbon Solutions (RCCS) at Heriot-Watt University is gratefully acknowledged. M.T.I. thanks the Spanish Ministry of Education, Culture and Sports for financial support under the “Salvador Madariaga” programme for senior researchers (ref no. PRX17/00264).Peer reviewedACS PublicationsHeriot-Watt UniversityMinisterio de Educación, Cultura y Deporte (España)Izquierdo Pantoja, María Teresa [0000-0002-2408-2528]Maroto Valer, Mercedes [0000-0003-1643-2863]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201920192018info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/185107reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1021/acs.iecr.8b02317Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1851072026-05-22T06:33:51Z
dc.title.none.fl_str_mv High-temperature CO2 capture by Li4SiO4 sorbents: effect of CO2 concentration and cyclic performance under representative conditions
title High-temperature CO2 capture by Li4SiO4 sorbents: effect of CO2 concentration and cyclic performance under representative conditions
spellingShingle High-temperature CO2 capture by Li4SiO4 sorbents: effect of CO2 concentration and cyclic performance under representative conditions
Izquierdo Pantoja, María Teresa
CO2 capture
Li-based sorbents
title_short High-temperature CO2 capture by Li4SiO4 sorbents: effect of CO2 concentration and cyclic performance under representative conditions
title_full High-temperature CO2 capture by Li4SiO4 sorbents: effect of CO2 concentration and cyclic performance under representative conditions
title_fullStr High-temperature CO2 capture by Li4SiO4 sorbents: effect of CO2 concentration and cyclic performance under representative conditions
title_full_unstemmed High-temperature CO2 capture by Li4SiO4 sorbents: effect of CO2 concentration and cyclic performance under representative conditions
title_sort High-temperature CO2 capture by Li4SiO4 sorbents: effect of CO2 concentration and cyclic performance under representative conditions
dc.creator.none.fl_str_mv Izquierdo Pantoja, María Teresa
Saleh, Ahmed
Sánchez Fernández, Eva
Maroto Valer, Mercedes
García, S.
author Izquierdo Pantoja, María Teresa
author_facet Izquierdo Pantoja, María Teresa
Saleh, Ahmed
Sánchez Fernández, Eva
Maroto Valer, Mercedes
García, S.
author_role author
author2 Saleh, Ahmed
Sánchez Fernández, Eva
Maroto Valer, Mercedes
García, S.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Heriot-Watt University
Ministerio de Educación, Cultura y Deporte (España)
Izquierdo Pantoja, María Teresa [0000-0002-2408-2528]
Maroto Valer, Mercedes [0000-0003-1643-2863]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv CO2 capture
Li-based sorbents
topic CO2 capture
Li-based sorbents
description 10 Figuras, 1 Tabla
publishDate 2018
dc.date.none.fl_str_mv 2018
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/185107
url http://hdl.handle.net/10261/185107
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1021/acs.iecr.8b02317
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv ACS Publications
publisher.none.fl_str_mv ACS Publications
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869417285028937728
score 15,811543

Similares en LA Referencia