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Hydroformylation of 1 - dodecene in the thermomorphic solvent system dimethylformamide/decane. phase behavior – reaction performance – catalyst recycling / Elisabeth Schafer in Industrial & engineering chemistry research, Vol.51 N° 31 (Août 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol.51 N° 31 (Août 2012) . - pp. 10296-10306 Titre : Hydroformylation of 1 - dodecene in the thermomorphic solvent system dimethylformamide/decane. phase behavior – reaction performance – catalyst recycling Type de document : texte imprimé Auteurs : Elisabeth Schafer, Auteur ; Yvonne Brunsch, Auteur ; Gabriele Sadowski, Auteur Année de publication : 2012 Article en page(s) : pp. 10296-10306 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Recycling  Catalyst Résumé : An economically meaningful hydroformylation of long-chain olefins requires an efficient combination of both a high-yield reaction step and efficient catalyst recycling. The application of thermomorphic multicomponent solvent (TMS) systems allows for optimal reaction as well as catalyst-recycling conditions. In this work, the TMS concept was applied to the homogeneously rhodium-catalyzed hydroformylation of 1-dodecene in the TMS system dimethylformamide (DMF)/decane using Rh(acac)(CO)2/Biphephos as the catalyst system. Thermodynamic investigations focused on the influence of the olefin (hydroformulation educt) and the aldehyde (hydroformylation product) on the phase behavior of the TMS system. Temperature dependent liquid―liquid equilibrium (LLE) data were measured for the binary systems DMF/decane and DMF/1-dodecene and for the ternary systems DMF/decane/1-dodecene and DMF/decane/dodecanal. Additionally, the corresponding LLE data were modeled applying the Perturbed Chain Polar Statistical Associating Fluid Theory (PCP-SAFT) using a heterosegmented approach for modeling the long-chain aldehyde. On the basis of the LLE data, adequate working points for hydroformylation experiments in the TMS system were selected. In these experiments, aldehyde yields of up to 87% with an n/iso ratio of up to 99:1 were achieved. Moreover, the TMS system was successfully applied to catalyst recycling in eight recycling runs with a catalyst leaching of 7 ppm rhodium at lowest. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26234059 [article] Hydroformylation of 1 - dodecene in the thermomorphic solvent system dimethylformamide/decane. phase behavior – reaction performance – catalyst recycling [texte imprimé] / Elisabeth Schafer, Auteur ; Yvonne Brunsch, Auteur ; Gabriele Sadowski, Auteur . - 2012 . - pp. 10296-10306. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol.51 N° 31 (Août 2012) . - pp. 10296-10306 Mots-clés : Recycling  Catalyst Résumé : An economically meaningful hydroformylation of long-chain olefins requires an efficient combination of both a high-yield reaction step and efficient catalyst recycling. The application of thermomorphic multicomponent solvent (TMS) systems allows for optimal reaction as well as catalyst-recycling conditions. In this work, the TMS concept was applied to the homogeneously rhodium-catalyzed hydroformylation of 1-dodecene in the TMS system dimethylformamide (DMF)/decane using Rh(acac)(CO)2/Biphephos as the catalyst system. Thermodynamic investigations focused on the influence of the olefin (hydroformulation educt) and the aldehyde (hydroformylation product) on the phase behavior of the TMS system. Temperature dependent liquid―liquid equilibrium (LLE) data were measured for the binary systems DMF/decane and DMF/1-dodecene and for the ternary systems DMF/decane/1-dodecene and DMF/decane/dodecanal. Additionally, the corresponding LLE data were modeled applying the Perturbed Chain Polar Statistical Associating Fluid Theory (PCP-SAFT) using a heterosegmented approach for modeling the long-chain aldehyde. On the basis of the LLE data, adequate working points for hydroformylation experiments in the TMS system were selected. In these experiments, aldehyde yields of up to 87% with an n/iso ratio of up to 99:1 were achieved. Moreover, the TMS system was successfully applied to catalyst recycling in eight recycling runs with a catalyst leaching of 7 ppm rhodium at lowest. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26234059

Liquid–liquid equilibria of systems with linear aldehydes. experimental data and modeling with PCP-SAFT / Elisabeth Schafer in Industrial & engineering chemistry research, Vol. 51 N° 44 (Novembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 44 (Novembre 2012) . - pp. 14525-14534 Titre : Liquid–liquid equilibria of systems with linear aldehydes. experimental data and modeling with PCP-SAFT Type de document : texte imprimé Auteurs : Elisabeth Schafer, Auteur ; Gabriele Sadowski, Auteur Année de publication : 2013 Article en page(s) : pp. 14525-14534 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Modeling  Phase  equilibrium  Liquid  liquid  equilibrium Résumé : Liquid―liquid equilibrium (LLE) data were measured for the binary system propylene carbonate/decane (288.15 to 403.15 K) as well as for the temary systems propylene carbonate/decane + linear aldehyde (C4, C8, C10, C12, C13) and DMF/decane + linear aldehyde (C4, C8, CIO, C13) at 298.15 K using the analytic method. The reliability of the ternary LLE data is ascertained by employing Othmer―Tobias plots. Concerning the aldehyde distribution coefficients in the ternary systems, a distinctive dependency on the chain length of the aldehyde was observed. The LLE data were modeled with the Perturbed Chain Polar Statistical Associating Fluid Theory (PCP-SAFT) equation of state using a heterosegmented approach for describing the aldehyde molecules. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26620367 [article] Liquid–liquid equilibria of systems with linear aldehydes. experimental data and modeling with PCP-SAFT [texte imprimé] / Elisabeth Schafer, Auteur ; Gabriele Sadowski, Auteur . - 2013 . - pp. 14525-14534. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 44 (Novembre 2012) . - pp. 14525-14534 Mots-clés : Modeling  Phase  equilibrium  Liquid  liquid  equilibrium Résumé : Liquid―liquid equilibrium (LLE) data were measured for the binary system propylene carbonate/decane (288.15 to 403.15 K) as well as for the temary systems propylene carbonate/decane + linear aldehyde (C4, C8, C10, C12, C13) and DMF/decane + linear aldehyde (C4, C8, CIO, C13) at 298.15 K using the analytic method. The reliability of the ternary LLE data is ascertained by employing Othmer―Tobias plots. Concerning the aldehyde distribution coefficients in the ternary systems, a distinctive dependency on the chain length of the aldehyde was observed. The LLE data were modeled with the Perturbed Chain Polar Statistical Associating Fluid Theory (PCP-SAFT) equation of state using a heterosegmented approach for describing the aldehyde molecules. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26620367