Chlorination of Lanthanum Oxide
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 reac...
| Autores: | , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2012 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/11148 |
| Acceso en línea: | http://hdl.handle.net/11336/11148 |
| Access Level: | acceso abierto |
| Palabra clave: | Lanthanum Oxychloride Intrinsic Kinetics Nucleation And Growth Activation Energy https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
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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 Técnicas2024-05-08T13:54:49Zoai: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:34982024-05-08 13:54:49.38CONICET 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 https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| 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 https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| topic |
Lanthanum Oxychloride Intrinsic Kinetics Nucleation And Growth Activation Energy https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| 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 |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
| reponame_str |
CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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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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1799195512443764736 |
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15.812429 |