Estudio cinético de la descomposición catalizada de peróxido de hidrógeno sobre carbón activado

Detalhes bibliográficos
Autor(a) principal: Paternina,Elihu
Data de Publicação: 2009
Outros Autores: M. Arias,Juan, Barragán,Daniel
Tipo de documento: Artigo
Idioma: spa
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000400020
Resumo: The kinetic study of decomposition of hydrogen peroxide catalyzed by activated carbon was carried out. The effect of concentrations of reactants and temperature were experimentally studied. Kinetic data were evaluated using differential method of initial rates of reaction. When a typical kinetic law for reactions in homogeneous phase is used, first order of reaction is obtained for hydrogen peroxide and activated carbon, and activation energy of 27 kJ mol-1 for the reaction was estimated. Experimentally was observed that surface of activated carbon is chemically modified during decomposition of hydrogen peroxide, based on this result a scheme of reaction was proposed and evaluated. Experimental data fits very well to a Langmuir- Hinshelwood kinetic model and activation energy of 40 kJ mol-1 was estimated for reaction in heterogeneous phase.
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spelling Estudio cinético de la descomposición catalizada de peróxido de hidrógeno sobre carbón activadodecomposition of hydrogen peroxideinitial rate of reactionkinetic law of Langmuir-HinshelwoodThe kinetic study of decomposition of hydrogen peroxide catalyzed by activated carbon was carried out. The effect of concentrations of reactants and temperature were experimentally studied. Kinetic data were evaluated using differential method of initial rates of reaction. When a typical kinetic law for reactions in homogeneous phase is used, first order of reaction is obtained for hydrogen peroxide and activated carbon, and activation energy of 27 kJ mol-1 for the reaction was estimated. Experimentally was observed that surface of activated carbon is chemically modified during decomposition of hydrogen peroxide, based on this result a scheme of reaction was proposed and evaluated. Experimental data fits very well to a Langmuir- Hinshelwood kinetic model and activation energy of 40 kJ mol-1 was estimated for reaction in heterogeneous phase.Sociedade Brasileira de Química2009-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000400020Química Nova v.32 n.4 2009reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422009000400020info:eu-repo/semantics/openAccessPaternina,ElihuM. Arias,JuanBarragán,Danielspa2009-06-09T00:00:00Zoai:scielo:S0100-40422009000400020Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2009-06-09T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Estudio cinético de la descomposición catalizada de peróxido de hidrógeno sobre carbón activado
title Estudio cinético de la descomposición catalizada de peróxido de hidrógeno sobre carbón activado
spellingShingle Estudio cinético de la descomposición catalizada de peróxido de hidrógeno sobre carbón activado
Paternina,Elihu
decomposition of hydrogen peroxide
initial rate of reaction
kinetic law of Langmuir-Hinshelwood
title_short Estudio cinético de la descomposición catalizada de peróxido de hidrógeno sobre carbón activado
title_full Estudio cinético de la descomposición catalizada de peróxido de hidrógeno sobre carbón activado
title_fullStr Estudio cinético de la descomposición catalizada de peróxido de hidrógeno sobre carbón activado
title_full_unstemmed Estudio cinético de la descomposición catalizada de peróxido de hidrógeno sobre carbón activado
title_sort Estudio cinético de la descomposición catalizada de peróxido de hidrógeno sobre carbón activado
author Paternina,Elihu
author_facet Paternina,Elihu
M. Arias,Juan
Barragán,Daniel
author_role author
author2 M. Arias,Juan
Barragán,Daniel
author2_role author
author
dc.contributor.author.fl_str_mv Paternina,Elihu
M. Arias,Juan
Barragán,Daniel
dc.subject.por.fl_str_mv decomposition of hydrogen peroxide
initial rate of reaction
kinetic law of Langmuir-Hinshelwood
topic decomposition of hydrogen peroxide
initial rate of reaction
kinetic law of Langmuir-Hinshelwood
description The kinetic study of decomposition of hydrogen peroxide catalyzed by activated carbon was carried out. The effect of concentrations of reactants and temperature were experimentally studied. Kinetic data were evaluated using differential method of initial rates of reaction. When a typical kinetic law for reactions in homogeneous phase is used, first order of reaction is obtained for hydrogen peroxide and activated carbon, and activation energy of 27 kJ mol-1 for the reaction was estimated. Experimentally was observed that surface of activated carbon is chemically modified during decomposition of hydrogen peroxide, based on this result a scheme of reaction was proposed and evaluated. Experimental data fits very well to a Langmuir- Hinshelwood kinetic model and activation energy of 40 kJ mol-1 was estimated for reaction in heterogeneous phase.
publishDate 2009
dc.date.none.fl_str_mv 2009-01-01
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=S0100-40422009000400020
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000400020
dc.language.iso.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv 10.1590/S0100-40422009000400020
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 Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Química Nova v.32 n.4 2009
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
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