Documents disponibles écrits par cet auteur

Esterification of Acrylic Acid and n-Butanol in a Pilot-Scale Reactive Distillation Column—Experimental Investigation, Model Validation, and Process Analysis / Alexander Niesbach in Industrial & engineering chemistry research, Vol. 51 N° 50 (Décembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 50 (Décembre 2012) . - pp. 16444-16456 Titre : Esterification of Acrylic Acid and n-Butanol in a Pilot-Scale Reactive Distillation Column—Experimental Investigation, Model Validation, and Process Analysis Type de document : texte imprimé Auteurs : Alexander Niesbach, Auteur ; Ron Fuhrmeister, Auteur ; Tobias Keller, Auteur Année de publication : 2013 Article en page(s) : pp. 16444-16456 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Modeling  Distillation  column  Distillation  with  reactionEsterification Résumé : Due to a high risk of polymerization and complex thermodynamic behavior of the chemical system, the current production process for n-butyl acrylate synthesis is cost-intensive and challenging. Reactive distillation integrates chemical reactions and distillation into one unit at the same time and is one of the best-known examples of process intensification. To facilitate industrial application of this concept for the production of n-butyl acrylate, reliable experimental data are required. This article presents an experimental and theoretical investigation of the synthesis of n-butyl acrylate using reactive distillation. Experiments were conducted in a pilot-scale reactive distillation column, and the decisive operational parameters were varied. To predict the experimental results, a nonequilibrium-stage model was applied and the model was validated using the experimental data. The validated model was then used to perform a process analysis, showing trends in the conversion of acrylic acid and n-butanol and the purity of n-butyl acrylate that can be used for prospective optimization studies. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26732173 [article] Esterification of Acrylic Acid and n-Butanol in a Pilot-Scale Reactive Distillation Column—Experimental Investigation, Model Validation, and Process Analysis [texte imprimé] / Alexander Niesbach, Auteur ; Ron Fuhrmeister, Auteur ; Tobias Keller, Auteur . - 2013 . - pp. 16444-16456. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 50 (Décembre 2012) . - pp. 16444-16456 Mots-clés : Modeling  Distillation  column  Distillation  with  reactionEsterification Résumé : Due to a high risk of polymerization and complex thermodynamic behavior of the chemical system, the current production process for n-butyl acrylate synthesis is cost-intensive and challenging. Reactive distillation integrates chemical reactions and distillation into one unit at the same time and is one of the best-known examples of process intensification. To facilitate industrial application of this concept for the production of n-butyl acrylate, reliable experimental data are required. This article presents an experimental and theoretical investigation of the synthesis of n-butyl acrylate using reactive distillation. Experiments were conducted in a pilot-scale reactive distillation column, and the decisive operational parameters were varied. To predict the experimental results, a nonequilibrium-stage model was applied and the model was validated using the experimental data. The validated model was then used to perform a process analysis, showing trends in the conversion of acrylic acid and n-butanol and the purity of n-butyl acrylate that can be used for prospective optimization studies. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26732173

Transesterification of dimethyl carbonate with ethanol to form ethyl methyl carbonate and diethyl carbonate / Tobias Keller in Industrial & engineering chemistry research, Vol. 50 N° 19 (Octobre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 19 (Octobre 2011) . - pp. 11073-11086 Titre : Transesterification of dimethyl carbonate with ethanol to form ethyl methyl carbonate and diethyl carbonate : a comprehensive study on chemical equilibrium and reaction kinetics Type de document : texte imprimé Auteurs : Tobias Keller, Auteur ; Johannes Holtbruegge, Auteur ; Alexander Niesbach, Auteur Année de publication : 2011 Article en page(s) : pp. 11073-11086 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Kinetics  Chemical  equilibrium  Transesterification Résumé : This article studies the consecutive transesterification of dimethyl carbonate with ethanol to form ethyl methyl carbonate and diethyl carbonate. The chemical equilibrium and reaction kinetics of this system are investigated experimentally and theoretically. To enhance the reaction rate, the homogeneous catalyst sodium ethoxide was applied. Molar-based and activity-based chemical equilibrium constants were calculated from experimental results, and their temperature dependence was described using the van't Hoff equation. An activity-based kinetic model that considers the temperature dependence of the reaction rate constants with the Arrhenius equation was derived. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24573305 [article] Transesterification of dimethyl carbonate with ethanol to form ethyl methyl carbonate and diethyl carbonate : a comprehensive study on chemical equilibrium and reaction kinetics [texte imprimé] / Tobias Keller, Auteur ; Johannes Holtbruegge, Auteur ; Alexander Niesbach, Auteur . - 2011 . - pp. 11073-11086. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 19 (Octobre 2011) . - pp. 11073-11086 Mots-clés : Kinetics  Chemical  equilibrium  Transesterification Résumé : This article studies the consecutive transesterification of dimethyl carbonate with ethanol to form ethyl methyl carbonate and diethyl carbonate. The chemical equilibrium and reaction kinetics of this system are investigated experimentally and theoretically. To enhance the reaction rate, the homogeneous catalyst sodium ethoxide was applied. Molar-based and activity-based chemical equilibrium constants were calculated from experimental results, and their temperature dependence was described using the van't Hoff equation. An activity-based kinetic model that considers the temperature dependence of the reaction rate constants with the Arrhenius equation was derived. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24573305