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From kinetic study to thermal safety assessment / Sébastien Leveneur in Industrial & engineering chemistry research, Vol. 51 N° 43 (Octobre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 43 (Octobre 2012) . - pp. 13999-14007 Titre : From kinetic study to thermal safety assessment : Application to peroxyformic acid synthesis Type de document : texte imprimé Auteurs : Sébastien Leveneur, Auteur ; Martin Thönes, Auteur ; Jean-Pierre Hébert, Auteur Année de publication : 2013 Article en page(s) : pp. 13999-14007 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Safety  Kinetics Résumé : This article proposes a kinetic and thermal study of the formic acid perhydrolysis in a semibatch process at various hydrogen peroxide concentrations (5.32―8.21 mol/L), formic acid molar inlet flow rates (0.04―0.22 mol/min), reaction temperatures (30-60 °C), and catalyst amount (0.0―10.6 g). A cation-exchange resin, i.e., Amberlite IR-120, was used as a catalyst. Synthesis and decomposition of peroxyformic acid were modeled by coupling the energy and mass balances, and a pseudohomogeneous model for the reaction kinetics. A nonlinear regression method was used to estimate the kinetic parameters, such as rate constant, and thermal parameters, such as reaction enthalpy. The knowledge of these parameters allows the determination of maximum temperature of the synthesis reaction (MTSR), the time to maximum rate under adiabatic condition (TMRad), and the criticality classification. These safety parameters are important to properly design the industrial reactor. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26593327 [article] From kinetic study to thermal safety assessment : Application to peroxyformic acid synthesis [texte imprimé] / Sébastien Leveneur, Auteur ; Martin Thönes, Auteur ; Jean-Pierre Hébert, Auteur . - 2013 . - pp. 13999-14007. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 43 (Octobre 2012) . - pp. 13999-14007 Mots-clés : Safety  Kinetics Résumé : This article proposes a kinetic and thermal study of the formic acid perhydrolysis in a semibatch process at various hydrogen peroxide concentrations (5.32―8.21 mol/L), formic acid molar inlet flow rates (0.04―0.22 mol/min), reaction temperatures (30-60 °C), and catalyst amount (0.0―10.6 g). A cation-exchange resin, i.e., Amberlite IR-120, was used as a catalyst. Synthesis and decomposition of peroxyformic acid were modeled by coupling the energy and mass balances, and a pseudohomogeneous model for the reaction kinetics. A nonlinear regression method was used to estimate the kinetic parameters, such as rate constant, and thermal parameters, such as reaction enthalpy. The knowledge of these parameters allows the determination of maximum temperature of the synthesis reaction (MTSR), the time to maximum rate under adiabatic condition (TMRad), and the criticality classification. These safety parameters are important to properly design the industrial reactor. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26593327

Modeling of a liquid - liquid - solid heterogeneous reaction system / Sébastien Leveneur in Industrial & engineering chemistry research, Vol. 51 N° 1 (Janvier 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 1 (Janvier 2012) . - pp. 189-201 Titre : Modeling of a liquid - liquid - solid heterogeneous reaction system : Model system and peroxyvaleric acid Type de document : texte imprimé Auteurs : Sébastien Leveneur, Auteur ; Cesar A. De Araujo Filho, Auteur ; Estel Lionel, Auteur Année de publication : 2012 Article en page(s) : pp. 189-201 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Heterogeneous  reaction  Modeling Résumé : A mathematical model was developed to interpret a liquid―liquid―solid heterogeneous reaction system using valeric acid (pentanoic acid) perhydrolysis as model. Kinetic, thermodynamic, and mass transfer parameters were included in this model. Perhydrolysis of valeric acid (pentanoic acid) on Amberlite IR-120 catalyst experiments were carried out in the temperature range of 40―60 °C and with an initial valeric acid concentration of 50 wt %. The influence of water and the acid catalyst was taken into account to develop a suitable kinetic model. The thermodynamic parameters, such as the reaction enthalpy (ΔH0R) and the molar equilibrium ratio (m) were determined experimentally. The kinetic parameters were determined by nonlinear regression analysis and they were statistically well-identified. The standard reaction enthalpy was estimated to ―13.84 kJ•mol―1 and the activation energy of the reaction was estimated to 64.5 kJ•mol―1 DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25476461 [article] Modeling of a liquid - liquid - solid heterogeneous reaction system : Model system and peroxyvaleric acid [texte imprimé] / Sébastien Leveneur, Auteur ; Cesar A. De Araujo Filho, Auteur ; Estel Lionel, Auteur . - 2012 . - pp. 189-201. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 1 (Janvier 2012) . - pp. 189-201 Mots-clés : Heterogeneous  reaction  Modeling Résumé : A mathematical model was developed to interpret a liquid―liquid―solid heterogeneous reaction system using valeric acid (pentanoic acid) perhydrolysis as model. Kinetic, thermodynamic, and mass transfer parameters were included in this model. Perhydrolysis of valeric acid (pentanoic acid) on Amberlite IR-120 catalyst experiments were carried out in the temperature range of 40―60 °C and with an initial valeric acid concentration of 50 wt %. The influence of water and the acid catalyst was taken into account to develop a suitable kinetic model. The thermodynamic parameters, such as the reaction enthalpy (ΔH0R) and the molar equilibrium ratio (m) were determined experimentally. The kinetic parameters were determined by nonlinear regression analysis and they were statistically well-identified. The standard reaction enthalpy was estimated to ―13.84 kJ•mol―1 and the activation energy of the reaction was estimated to 64.5 kJ•mol―1 DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25476461