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Hydrogenation of vegetable oils over Pd on nanocomposite carbon catalysts / Irina L. Simakova in Industrial & engineering chemistry research, Vol. 47 N°19 (Octobre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 N°19 (Octobre 2008) . - p. 7219–7225 Titre : Hydrogenation of vegetable oils over Pd on nanocomposite carbon catalysts Type de document : texte imprimé Auteurs : Irina L. Simakova, Auteur ; Olga A. Simakova, Auteur ; Anatoliy V. Romanenko, Auteur Année de publication : 2008 Article en page(s) : p. 7219–7225 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Vegetable  oils--Hydrogenation  Pd  nanocomposite  carbon  catalysts Résumé : Catalytic hydrogenation of vegetable oils was studied over Pd nanocomposite carbon catalysts. The mesoporous structure of the carbon support was beneficial to achieve fast hydrogenation rates and the desired cis/trans ratio of monoenic products of edible oil hydrogenation. The preparation procedure developed for a slurry catalyst was successfully utilized for fixed bed applications. Industrial experience of Pd/nanocomposite carbon utilization in selective hydrogenation of edible and total hydrogenation of nonedible oils is described. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800663j [article] Hydrogenation of vegetable oils over Pd on nanocomposite carbon catalysts [texte imprimé] / Irina L. Simakova, Auteur ; Olga A. Simakova, Auteur ; Anatoliy V. Romanenko, Auteur . - 2008 . - p. 7219–7225. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N°19 (Octobre 2008) . - p. 7219–7225 Mots-clés : Vegetable  oils--Hydrogenation  Pd  nanocomposite  carbon  catalysts Résumé : Catalytic hydrogenation of vegetable oils was studied over Pd nanocomposite carbon catalysts. The mesoporous structure of the carbon support was beneficial to achieve fast hydrogenation rates and the desired cis/trans ratio of monoenic products of edible oil hydrogenation. The preparation procedure developed for a slurry catalyst was successfully utilized for fixed bed applications. Industrial experience of Pd/nanocomposite carbon utilization in selective hydrogenation of edible and total hydrogenation of nonedible oils is described. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800663j

Step changes and deactivation behavior in the continuous decarboxylation of stearic acid / Anders Theilgaard Madsen 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. 11049-11058 Titre : Step changes and deactivation behavior in the continuous decarboxylation of stearic acid Type de document : texte imprimé Auteurs : Anders Theilgaard Madsen, Auteur ; Bartosz Rozmysłowicz, Auteur ; Irina L. Simakova, Auteur Année de publication : 2011 Article en page(s) : pp. 11049-11058 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Deactivation Résumé : Deoxygenation of dilute and concentrated stearic acid over 2% Pd/C beads was performed in a continuous reactor at 300 °C and 20 bar pressure of Ar or 5% H2/Ar. Stable operation was obtained in 5% H2 atmosphere, with 95% conversion of 10 mol % dilute stearic acid in dodecane and 12% conversion of pure stearic acid. Deactivation took place in H2-deficient gas atmosphere, probably as a result of the formation of unsaturated products and coking in the pore system. Transient experiments with step changes were performed: 1 h was required for the step change to be visible in liquid sampling, whereas steady states were achieved after a total of 2.5―3 h. Postreaction analysis of the spent catalyst revealed that a deactivation profile was formed downward over the catalyst bed. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24573302 [article] Step changes and deactivation behavior in the continuous decarboxylation of stearic acid [texte imprimé] / Anders Theilgaard Madsen, Auteur ; Bartosz Rozmysłowicz, Auteur ; Irina L. Simakova, Auteur . - 2011 . - pp. 11049-11058. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 19 (Octobre 2011) . - pp. 11049-11058 Mots-clés : Deactivation Résumé : Deoxygenation of dilute and concentrated stearic acid over 2% Pd/C beads was performed in a continuous reactor at 300 °C and 20 bar pressure of Ar or 5% H2/Ar. Stable operation was obtained in 5% H2 atmosphere, with 95% conversion of 10 mol % dilute stearic acid in dodecane and 12% conversion of pure stearic acid. Deactivation took place in H2-deficient gas atmosphere, probably as a result of the formation of unsaturated products and coking in the pore system. Transient experiments with step changes were performed: 1 h was required for the step change to be visible in liquid sampling, whereas steady states were achieved after a total of 2.5―3 h. Postreaction analysis of the spent catalyst revealed that a deactivation profile was formed downward over the catalyst bed. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24573302