Kinetic study of neodymium oxide chlorination

Autores
Bosco, Marta Verónica; Fouga, Gastón Galo; Bohe, Ana Ester
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The kinetics of the chlorination of neodymium oxide has been investigated by thermogravimetry between 312 ºC and 475 ºC and for partial pressures of chlorine ranging from 10 to 50 kPa. The starting temperature for the reaction of neodymium oxide with chlorine is determined to be about 250 ºC leading neodymium oxychloride as product. The results showed that for temperatures below 425 ºC the system is under chemical control and the formation of the oxychloride progresses though a nucleation and growth mechanism. The influence of chlorine mass transport through the bulk gas phase and through the boundary layer in the overall rate was analyzed. In the absence of these two mass-transfer steps, a reaction order of 0.40 with respect to chlorine partial pressure, and activation energy of 161 ± 4 kJ mol-1 were determined. A complete rate expression has been successfully developed.
Fil: Bosco, Marta Verónica. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Fouga, Gastón Galo. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; Argentina
Fil: Bohe, Ana Ester. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; Argentina. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche. Departamento de Geologia y Petroleo; . Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Materia
Neodymium oxide
Chlorination
Chlorine
Kinetics
Thermogravimetry
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:11336/268856
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Kinetic study of neodymium oxide chlorinationBosco, Marta VerónicaFouga, Gastón GaloBohe, Ana EsterNeodymium oxideChlorinationChlorineKineticsThermogravimetryhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2The kinetics of the chlorination of neodymium oxide has been investigated by thermogravimetry between 312 ºC and 475 ºC and for partial pressures of chlorine ranging from 10 to 50 kPa. The starting temperature for the reaction of neodymium oxide with chlorine is determined to be about 250 ºC leading neodymium oxychloride as product. The results showed that for temperatures below 425 ºC the system is under chemical control and the formation of the oxychloride progresses though a nucleation and growth mechanism. The influence of chlorine mass transport through the bulk gas phase and through the boundary layer in the overall rate was analyzed. In the absence of these two mass-transfer steps, a reaction order of 0.40 with respect to chlorine partial pressure, and activation energy of 161 ± 4 kJ mol-1 were determined. A complete rate expression has been successfully developed.Fil: Bosco, Marta Verónica. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Fouga, Gastón Galo. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; ArgentinaFil: Bohe, Ana Ester. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; Argentina. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche. Departamento de Geologia y Petroleo; . Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaElsevier Science2012-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/268856Bosco, Marta Verónica; Fouga, Gastón Galo; Bohe, Ana Ester; Kinetic study of neodymium oxide chlorination; Elsevier Science; Thermochimica Acta; 540; 2-2012; 98-1060040-6031CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0040603112001785info:eu-repo/semantics/altIdentifier/doi/10.1016/j.tca.2012.04.014info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:20:04Zoai:ri.conicet.gov.ar:11336/268856instacron: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:34982025-09-10 13:20:04.9CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Kinetic study of neodymium oxide chlorination
title Kinetic study of neodymium oxide chlorination
spellingShingle Kinetic study of neodymium oxide chlorination
Bosco, Marta Verónica
Neodymium oxide
Chlorination
Chlorine
Kinetics
Thermogravimetry
title_short Kinetic study of neodymium oxide chlorination
title_full Kinetic study of neodymium oxide chlorination
title_fullStr Kinetic study of neodymium oxide chlorination
title_full_unstemmed Kinetic study of neodymium oxide chlorination
title_sort Kinetic study of neodymium oxide chlorination
dc.creator.none.fl_str_mv Bosco, Marta Verónica
Fouga, Gastón Galo
Bohe, Ana Ester
author Bosco, Marta Verónica
author_facet Bosco, Marta Verónica
Fouga, Gastón Galo
Bohe, Ana Ester
author_role author
author2 Fouga, Gastón Galo
Bohe, Ana Ester
author2_role author
author
dc.subject.none.fl_str_mv Neodymium oxide
Chlorination
Chlorine
Kinetics
Thermogravimetry
topic Neodymium oxide
Chlorination
Chlorine
Kinetics
Thermogravimetry
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The kinetics of the chlorination of neodymium oxide has been investigated by thermogravimetry between 312 ºC and 475 ºC and for partial pressures of chlorine ranging from 10 to 50 kPa. The starting temperature for the reaction of neodymium oxide with chlorine is determined to be about 250 ºC leading neodymium oxychloride as product. The results showed that for temperatures below 425 ºC the system is under chemical control and the formation of the oxychloride progresses though a nucleation and growth mechanism. The influence of chlorine mass transport through the bulk gas phase and through the boundary layer in the overall rate was analyzed. In the absence of these two mass-transfer steps, a reaction order of 0.40 with respect to chlorine partial pressure, and activation energy of 161 ± 4 kJ mol-1 were determined. A complete rate expression has been successfully developed.
Fil: Bosco, Marta Verónica. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Fouga, Gastón Galo. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; Argentina
Fil: Bohe, Ana Ester. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; Argentina. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche. Departamento de Geologia y Petroleo; . Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
description The kinetics of the chlorination of neodymium oxide has been investigated by thermogravimetry between 312 ºC and 475 ºC and for partial pressures of chlorine ranging from 10 to 50 kPa. The starting temperature for the reaction of neodymium oxide with chlorine is determined to be about 250 ºC leading neodymium oxychloride as product. The results showed that for temperatures below 425 ºC the system is under chemical control and the formation of the oxychloride progresses though a nucleation and growth mechanism. The influence of chlorine mass transport through the bulk gas phase and through the boundary layer in the overall rate was analyzed. In the absence of these two mass-transfer steps, a reaction order of 0.40 with respect to chlorine partial pressure, and activation energy of 161 ± 4 kJ mol-1 were determined. A complete rate expression has been successfully developed.
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/11336/268856
Bosco, Marta Verónica; Fouga, Gastón Galo; Bohe, Ana Ester; Kinetic study of neodymium oxide chlorination; Elsevier Science; Thermochimica Acta; 540; 2-2012; 98-106
0040-6031
CONICET Digital
CONICET
url http://hdl.handle.net/11336/268856
identifier_str_mv Bosco, Marta Verónica; Fouga, Gastón Galo; Bohe, Ana Ester; Kinetic study of neodymium oxide chlorination; Elsevier Science; Thermochimica Acta; 540; 2-2012; 98-106
0040-6031
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0040603112001785
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.tca.2012.04.014
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
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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 12.48226

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