Infrared study of the carbochlorination of MoO3 with gaseous chlorine below 703 K

Autores
Guibaldo, Cristina Noemi; Pomiro, Federico J.; de Micco, Georgina; Bohe, Ana Ester
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work the kinetics of the carbochlorination of molybdenum trioxide with sucrose carbon at low temperatures (below 703 K) has been studied by IR. A novel methodology for studying reaction kinetics is proposed based on on-line IR measurements of gaseous reaction products. This technique allows identification of all the species involved in the reaction system which were not taking into account in previous studies. As predicted by thermodynamic calculations, the reaction proceeds by formation of CO2 mainly, however formation of CO, COCl2, CCl4 and HCl also takes place. The starting temperature for the reaction is determined at about 600 K. A reaction mechanism is proposed based on the analysis of binary interactions between the reactants and their morphological changes during the reactions. The influence of carbon/oxide ratio, gaseous flow rate, sample initial mass, temperature, and chlorine partial pressure in the reaction rate was analyzed. Two kinetic regimes were identified, with activation energies of 203 ± 13 and 36 ± 6 kJ mol−1 which were attributed to chemical reaction control (below 653 K) and mixed reaction control at high temperatures. A reaction order of 0.5 with respect to chlorine partial pressure at 673 K was determined for the carbochlorination reaction.
Fil: Guibaldo, Cristina Noemi. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: Pomiro, Federico J.. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: de Micco, Georgina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: Bohe, Ana Ester. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; Argentina
Materia
Molybdenum
Carbocholrination
Ftir
Reaction Mechanism
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:11336/46670
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/46670
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Infrared study of the carbochlorination of MoO3 with gaseous chlorine below 703 KGuibaldo, Cristina NoemiPomiro, Federico J.de Micco, GeorginaBohe, Ana EsterMolybdenumCarbocholrinationFtirReaction Mechanismhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1In this work the kinetics of the carbochlorination of molybdenum trioxide with sucrose carbon at low temperatures (below 703 K) has been studied by IR. A novel methodology for studying reaction kinetics is proposed based on on-line IR measurements of gaseous reaction products. This technique allows identification of all the species involved in the reaction system which were not taking into account in previous studies. As predicted by thermodynamic calculations, the reaction proceeds by formation of CO2 mainly, however formation of CO, COCl2, CCl4 and HCl also takes place. The starting temperature for the reaction is determined at about 600 K. A reaction mechanism is proposed based on the analysis of binary interactions between the reactants and their morphological changes during the reactions. The influence of carbon/oxide ratio, gaseous flow rate, sample initial mass, temperature, and chlorine partial pressure in the reaction rate was analyzed. Two kinetic regimes were identified, with activation energies of 203 ± 13 and 36 ± 6 kJ mol−1 which were attributed to chemical reaction control (below 653 K) and mixed reaction control at high temperatures. A reaction order of 0.5 with respect to chlorine partial pressure at 673 K was determined for the carbochlorination reaction.Fil: Guibaldo, Cristina Noemi. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; ArgentinaFil: Pomiro, Federico J.. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; ArgentinaFil: de Micco, Georgina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; ArgentinaFil: Bohe, Ana Ester. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; ArgentinaElsevier Science2016-02-22info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/46670Guibaldo, Cristina Noemi; Pomiro, Federico J.; de Micco, Georgina; Bohe, Ana Ester; Infrared study of the carbochlorination of MoO3 with gaseous chlorine below 703 K; Elsevier Science; Thermochimica Acta; 627; 22-2-2016; 9-190040-6031CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0040603116300077info:eu-repo/semantics/altIdentifier/doi/10.1016/j.tca.2016.01.017info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:36:39Zoai:ri.conicet.gov.ar:11336/46670instacron: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:34982025-10-15 14:36:39.72CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Infrared study of the carbochlorination of MoO3 with gaseous chlorine below 703 K
title Infrared study of the carbochlorination of MoO3 with gaseous chlorine below 703 K
spellingShingle Infrared study of the carbochlorination of MoO3 with gaseous chlorine below 703 K
Guibaldo, Cristina Noemi
Molybdenum
Carbocholrination
Ftir
Reaction Mechanism
title_short Infrared study of the carbochlorination of MoO3 with gaseous chlorine below 703 K
title_full Infrared study of the carbochlorination of MoO3 with gaseous chlorine below 703 K
title_fullStr Infrared study of the carbochlorination of MoO3 with gaseous chlorine below 703 K
title_full_unstemmed Infrared study of the carbochlorination of MoO3 with gaseous chlorine below 703 K
title_sort Infrared study of the carbochlorination of MoO3 with gaseous chlorine below 703 K
dc.creator.none.fl_str_mv Guibaldo, Cristina Noemi
Pomiro, Federico J.
de Micco, Georgina
Bohe, Ana Ester
author Guibaldo, Cristina Noemi
author_facet Guibaldo, Cristina Noemi
Pomiro, Federico J.
de Micco, Georgina
Bohe, Ana Ester
author_role author
author2 Pomiro, Federico J.
de Micco, Georgina
Bohe, Ana Ester
author2_role author
author
author
dc.subject.none.fl_str_mv Molybdenum
Carbocholrination
Ftir
Reaction Mechanism
topic Molybdenum
Carbocholrination
Ftir
Reaction Mechanism
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In this work the kinetics of the carbochlorination of molybdenum trioxide with sucrose carbon at low temperatures (below 703 K) has been studied by IR. A novel methodology for studying reaction kinetics is proposed based on on-line IR measurements of gaseous reaction products. This technique allows identification of all the species involved in the reaction system which were not taking into account in previous studies. As predicted by thermodynamic calculations, the reaction proceeds by formation of CO2 mainly, however formation of CO, COCl2, CCl4 and HCl also takes place. The starting temperature for the reaction is determined at about 600 K. A reaction mechanism is proposed based on the analysis of binary interactions between the reactants and their morphological changes during the reactions. The influence of carbon/oxide ratio, gaseous flow rate, sample initial mass, temperature, and chlorine partial pressure in the reaction rate was analyzed. Two kinetic regimes were identified, with activation energies of 203 ± 13 and 36 ± 6 kJ mol−1 which were attributed to chemical reaction control (below 653 K) and mixed reaction control at high temperatures. A reaction order of 0.5 with respect to chlorine partial pressure at 673 K was determined for the carbochlorination reaction.
Fil: Guibaldo, Cristina Noemi. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: Pomiro, Federico J.. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: de Micco, Georgina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: Bohe, Ana Ester. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; Argentina
description In this work the kinetics of the carbochlorination of molybdenum trioxide with sucrose carbon at low temperatures (below 703 K) has been studied by IR. A novel methodology for studying reaction kinetics is proposed based on on-line IR measurements of gaseous reaction products. This technique allows identification of all the species involved in the reaction system which were not taking into account in previous studies. As predicted by thermodynamic calculations, the reaction proceeds by formation of CO2 mainly, however formation of CO, COCl2, CCl4 and HCl also takes place. The starting temperature for the reaction is determined at about 600 K. A reaction mechanism is proposed based on the analysis of binary interactions between the reactants and their morphological changes during the reactions. The influence of carbon/oxide ratio, gaseous flow rate, sample initial mass, temperature, and chlorine partial pressure in the reaction rate was analyzed. Two kinetic regimes were identified, with activation energies of 203 ± 13 and 36 ± 6 kJ mol−1 which were attributed to chemical reaction control (below 653 K) and mixed reaction control at high temperatures. A reaction order of 0.5 with respect to chlorine partial pressure at 673 K was determined for the carbochlorination reaction.
publishDate 2016
dc.date.none.fl_str_mv 2016-02-22
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/11336/46670
Guibaldo, Cristina Noemi; Pomiro, Federico J.; de Micco, Georgina; Bohe, Ana Ester; Infrared study of the carbochlorination of MoO3 with gaseous chlorine below 703 K; Elsevier Science; Thermochimica Acta; 627; 22-2-2016; 9-19
0040-6031
CONICET Digital
CONICET
url http://hdl.handle.net/11336/46670
identifier_str_mv Guibaldo, Cristina Noemi; Pomiro, Federico J.; de Micco, Georgina; Bohe, Ana Ester; Infrared study of the carbochlorination of MoO3 with gaseous chlorine below 703 K; Elsevier Science; Thermochimica Acta; 627; 22-2-2016; 9-19
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/http://www.sciencedirect.com/science/article/pii/S0040603116300077
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.tca.2016.01.017
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
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 13.22299

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