Chlorination of Lanthanum Oxide

Autores
Gaviría, Juan Pablo; Navarro, Lucas G.; Bohe, Ana Ester
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The reactive system La2O3(s)−Cl2(g) was studied in thetemperature range 260−950 °C. The reaction course was followed bythermogravimetry, and the solids involved were characterized by X-raydiffraction, scanning electron microscopy, and energy dispersive spectros-copy. The results showed that the reaction leads to the formation of solidLaOCl, and for temperatures above 850oC, the lanthanum oxychloride ischlorinated, producing LaCl3(l). The formation of the oxychlorideprogresses through a nucleation and growth mechanism, and the kinetic analysi showed that at temperatures below 325 °C the system is under chemical control. The influence of diffusive processes on the kinetics of production of LaOCl was evaluated by studying the effect of the reactive gas flow rate, the mass of the sample, and the chlorine diffusion through the boundary layer surrounding the solid sample. The conversion curves were analyzed and fitted according to the Johnson−Mehl−Avrami description, and the reaction order with respect to thechlorine partial pressure was obtained by varying this partial pressure between 10 and 70 kPa. The rate equation was obtained, which includes the influence of the temperature, chlorine partial pressure, and reaction degree.
Fil: Gaviría, Juan Pablo. Comision Nacional de Energia Atomica. Gerencia Complejo Tecnologico Pilcaniyeu; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina
Fil: Navarro, Lucas G.. Comision Nacional de Energia Atomica. Gerencia Complejo Tecnologico Pilcaniyeu; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina
Fil: Bohe, Ana Ester. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comision Nacional de Energia Atomica. Gerencia Complejo Tecnologico Pilcaniyeu; Argentina. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina
Materia
Lanthanum Oxychloride
Intrinsic Kinetics
Nucleation And Growth
Activation Energy
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/11148
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Chlorination of Lanthanum OxideGaviría, Juan PabloNavarro, Lucas G.Bohe, Ana EsterLanthanum OxychlorideIntrinsic KineticsNucleation And GrowthActivation Energyhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The reactive system La2O3(s)−Cl2(g) was studied in thetemperature range 260−950 °C. The reaction course was followed bythermogravimetry, and the solids involved were characterized by X-raydiffraction, scanning electron microscopy, and energy dispersive spectros-copy. The results showed that the reaction leads to the formation of solidLaOCl, and for temperatures above 850oC, the lanthanum oxychloride ischlorinated, producing LaCl3(l). The formation of the oxychlorideprogresses through a nucleation and growth mechanism, and the kinetic analysi showed that at temperatures below 325 °C the system is under chemical control. The influence of diffusive processes on the kinetics of production of LaOCl was evaluated by studying the effect of the reactive gas flow rate, the mass of the sample, and the chlorine diffusion through the boundary layer surrounding the solid sample. The conversion curves were analyzed and fitted according to the Johnson−Mehl−Avrami description, and the reaction order with respect to thechlorine partial pressure was obtained by varying this partial pressure between 10 and 70 kPa. The rate equation was obtained, which includes the influence of the temperature, chlorine partial pressure, and reaction degree.Fil: Gaviría, Juan Pablo. Comision Nacional de Energia Atomica. Gerencia Complejo Tecnologico Pilcaniyeu; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); ArgentinaFil: Navarro, Lucas G.. Comision Nacional de Energia Atomica. Gerencia Complejo Tecnologico Pilcaniyeu; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); ArgentinaFil: Bohe, Ana Ester. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comision Nacional de Energia Atomica. Gerencia Complejo Tecnologico Pilcaniyeu; Argentina. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); ArgentinaAmerican Chemical Society2012-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/11148Gaviría, Juan Pablo; Navarro, Lucas G.; Bohe, Ana Ester; Chlorination of Lanthanum Oxide; American Chemical Society; Journal of Physical Chemistry A; 116; 9; 2-2012; 2062-20701089-5639enginfo:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/jp210457rinfo:eu-repo/semantics/altIdentifier/doi/10.1021/jp210457rinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-05T10:04:01Zoai:ri.conicet.gov.ar:11336/11148instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-11-05 10:04:01.962CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Chlorination of Lanthanum Oxide
title Chlorination of Lanthanum Oxide
spellingShingle Chlorination of Lanthanum Oxide
Gaviría, Juan Pablo
Lanthanum Oxychloride
Intrinsic Kinetics
Nucleation And Growth
Activation Energy
title_short Chlorination of Lanthanum Oxide
title_full Chlorination of Lanthanum Oxide
title_fullStr Chlorination of Lanthanum Oxide
title_full_unstemmed Chlorination of Lanthanum Oxide
title_sort Chlorination of Lanthanum Oxide
dc.creator.none.fl_str_mv Gaviría, Juan Pablo
Navarro, Lucas G.
Bohe, Ana Ester
author Gaviría, Juan Pablo
author_facet Gaviría, Juan Pablo
Navarro, Lucas G.
Bohe, Ana Ester
author_role author
author2 Navarro, Lucas G.
Bohe, Ana Ester
author2_role author
author
dc.subject.none.fl_str_mv Lanthanum Oxychloride
Intrinsic Kinetics
Nucleation And Growth
Activation Energy
topic Lanthanum Oxychloride
Intrinsic Kinetics
Nucleation And Growth
Activation Energy
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The reactive system La2O3(s)−Cl2(g) was studied in thetemperature range 260−950 °C. The reaction course was followed bythermogravimetry, and the solids involved were characterized by X-raydiffraction, scanning electron microscopy, and energy dispersive spectros-copy. The results showed that the reaction leads to the formation of solidLaOCl, and for temperatures above 850oC, the lanthanum oxychloride ischlorinated, producing LaCl3(l). The formation of the oxychlorideprogresses through a nucleation and growth mechanism, and the kinetic analysi showed that at temperatures below 325 °C the system is under chemical control. The influence of diffusive processes on the kinetics of production of LaOCl was evaluated by studying the effect of the reactive gas flow rate, the mass of the sample, and the chlorine diffusion through the boundary layer surrounding the solid sample. The conversion curves were analyzed and fitted according to the Johnson−Mehl−Avrami description, and the reaction order with respect to thechlorine partial pressure was obtained by varying this partial pressure between 10 and 70 kPa. The rate equation was obtained, which includes the influence of the temperature, chlorine partial pressure, and reaction degree.
Fil: Gaviría, Juan Pablo. Comision Nacional de Energia Atomica. Gerencia Complejo Tecnologico Pilcaniyeu; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina
Fil: Navarro, Lucas G.. Comision Nacional de Energia Atomica. Gerencia Complejo Tecnologico Pilcaniyeu; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina
Fil: Bohe, Ana Ester. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comision Nacional de Energia Atomica. Gerencia Complejo Tecnologico Pilcaniyeu; Argentina. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina
description The reactive system La2O3(s)−Cl2(g) was studied in thetemperature range 260−950 °C. The reaction course was followed bythermogravimetry, and the solids involved were characterized by X-raydiffraction, scanning electron microscopy, and energy dispersive spectros-copy. The results showed that the reaction leads to the formation of solidLaOCl, and for temperatures above 850oC, the lanthanum oxychloride ischlorinated, producing LaCl3(l). The formation of the oxychlorideprogresses through a nucleation and growth mechanism, and the kinetic analysi showed that at temperatures below 325 °C the system is under chemical control. The influence of diffusive processes on the kinetics of production of LaOCl was evaluated by studying the effect of the reactive gas flow rate, the mass of the sample, and the chlorine diffusion through the boundary layer surrounding the solid sample. The conversion curves were analyzed and fitted according to the Johnson−Mehl−Avrami description, and the reaction order with respect to thechlorine partial pressure was obtained by varying this partial pressure between 10 and 70 kPa. The rate equation was obtained, which includes the influence of the temperature, chlorine partial pressure, and reaction degree.
publishDate 2012
dc.date.none.fl_str_mv 2012-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/11148
Gaviría, Juan Pablo; Navarro, Lucas G.; Bohe, Ana Ester; Chlorination of Lanthanum Oxide; American Chemical Society; Journal of Physical Chemistry A; 116; 9; 2-2012; 2062-2070
1089-5639
url http://hdl.handle.net/11336/11148
identifier_str_mv Gaviría, Juan Pablo; Navarro, Lucas G.; Bohe, Ana Ester; Chlorination of Lanthanum Oxide; American Chemical Society; Journal of Physical Chemistry A; 116; 9; 2-2012; 2062-2070
1089-5639
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/jp210457r
info:eu-repo/semantics/altIdentifier/doi/10.1021/jp210457r
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.121305

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