Decomposition kinetics of alkaline earth carbonates by integral approximation method
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Cerâmica (São Paulo. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132008000300001 |
Resumo: | The decomposition kinetics of four synthetic alkaline earth metal carbonates (MgCO3, CaCO3, SrCO3 and BaCO3) was studied under non-isothermal conditions from thermo-gravimetric measurements as compared to. The integral approximation method of Coats and Redfern was used to determine the kinetic parameters for the decomposition processes. The decomposition reactions followed mostly first order kinetics and the activation energy of the decomposition reactions increased with the increase in the molecular mass of the carbonates. The change in enthalpy for the decomposition processes was also calculated and compared with the activation energies for the decomposition processes. The activation energy of the decomposition process for all the carbonates was higher than the enthalpy of the reaction excepting SrCO3. |
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Decomposition kinetics of alkaline earth carbonates by integral approximation methoddecompositionalkaline earth carbonatesnon-isothermal kineticsthermogravimetryThe decomposition kinetics of four synthetic alkaline earth metal carbonates (MgCO3, CaCO3, SrCO3 and BaCO3) was studied under non-isothermal conditions from thermo-gravimetric measurements as compared to. The integral approximation method of Coats and Redfern was used to determine the kinetic parameters for the decomposition processes. The decomposition reactions followed mostly first order kinetics and the activation energy of the decomposition reactions increased with the increase in the molecular mass of the carbonates. The change in enthalpy for the decomposition processes was also calculated and compared with the activation energies for the decomposition processes. The activation energy of the decomposition process for all the carbonates was higher than the enthalpy of the reaction excepting SrCO3.Associação Brasileira de Cerâmica2008-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132008000300001Cerâmica v.54 n.331 2008reponame:Cerâmica (São Paulo. Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0366-69132008000300001info:eu-repo/semantics/openAccessMaitra,S.Chakrabarty,N.Pramanik,J.eng2008-11-06T00:00:00Zoai:scielo:S0366-69132008000300001Revistahttps://www.scielo.br/j/ce/PUBhttps://old.scielo.br/oai/scielo-oai.phpceram.abc@gmail.com||ceram.abc@gmail.com1678-45530366-6913opendoar:2008-11-06T00:00Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Decomposition kinetics of alkaline earth carbonates by integral approximation method |
title |
Decomposition kinetics of alkaline earth carbonates by integral approximation method |
spellingShingle |
Decomposition kinetics of alkaline earth carbonates by integral approximation method Maitra,S. decomposition alkaline earth carbonates non-isothermal kinetics thermogravimetry |
title_short |
Decomposition kinetics of alkaline earth carbonates by integral approximation method |
title_full |
Decomposition kinetics of alkaline earth carbonates by integral approximation method |
title_fullStr |
Decomposition kinetics of alkaline earth carbonates by integral approximation method |
title_full_unstemmed |
Decomposition kinetics of alkaline earth carbonates by integral approximation method |
title_sort |
Decomposition kinetics of alkaline earth carbonates by integral approximation method |
author |
Maitra,S. |
author_facet |
Maitra,S. Chakrabarty,N. Pramanik,J. |
author_role |
author |
author2 |
Chakrabarty,N. Pramanik,J. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Maitra,S. Chakrabarty,N. Pramanik,J. |
dc.subject.por.fl_str_mv |
decomposition alkaline earth carbonates non-isothermal kinetics thermogravimetry |
topic |
decomposition alkaline earth carbonates non-isothermal kinetics thermogravimetry |
description |
The decomposition kinetics of four synthetic alkaline earth metal carbonates (MgCO3, CaCO3, SrCO3 and BaCO3) was studied under non-isothermal conditions from thermo-gravimetric measurements as compared to. The integral approximation method of Coats and Redfern was used to determine the kinetic parameters for the decomposition processes. The decomposition reactions followed mostly first order kinetics and the activation energy of the decomposition reactions increased with the increase in the molecular mass of the carbonates. The change in enthalpy for the decomposition processes was also calculated and compared with the activation energies for the decomposition processes. The activation energy of the decomposition process for all the carbonates was higher than the enthalpy of the reaction excepting SrCO3. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132008000300001 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132008000300001 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0366-69132008000300001 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Cerâmica |
publisher.none.fl_str_mv |
Associação Brasileira de Cerâmica |
dc.source.none.fl_str_mv |
Cerâmica v.54 n.331 2008 reponame:Cerâmica (São Paulo. Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Cerâmica (São Paulo. Online) |
collection |
Cerâmica (São Paulo. Online) |
repository.name.fl_str_mv |
Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
ceram.abc@gmail.com||ceram.abc@gmail.com |
_version_ |
1748936781059850240 |