Oxidative coupling of methane in a BCFZ perovskite Hollow fiber membrane reactor / Oliver Czuprat in Industrial & engineering chemistry research, Vol. 49 N° 21 (Novembre 2010)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 49 N° 21 (Novembre 2010) . - pp.10230-10236 Titre : Oxidative coupling of methane in a BCFZ perovskite Hollow fiber membrane reactor Type de document : texte imprimé Auteurs : Oliver Czuprat, Auteur ; Thomas Schiestel, Auteur ; Hartwig Voss, Auteur Année de publication : 2011 Article en page(s) : pp.10230-10236 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Membrane reactor Hollow fiber Résumé : A membrane reactor that incorporated hollow fiber in combination with an established catalyst was used for the oxidative coupling of methane (OCM). A perovskite membrane of the composition BaCoxFeyZrzO3-delta (BCFZ, x + y + z = 1) allows a controlled oxygen feed into the reactor over its axial length. Using this novel hollow fiber membrane reactor with a 2 wt % Mn/5 wt Na2WO4 on SiO2 catalyst as a packed bed around the fiber, oxygen separation from air and C-2 formation could be established at 800 degrees C with long-term stability. The highest C-2 selectivity of similar to 75% was observed at a methane conversion of 6% with a C2H4:C2H6 ratio of 2:1. The highest C2H4:C2H6 ratio of 4:1 and maximum C-2 yield of 17% was obtained at 50% C-2 selectivity. It is known from the literature that such results can be obtained without a catalyst in a similar membrane reactor only at temperatures 150 degrees C higher. ISSN : 0888-5885 En ligne : http://publica.fraunhofer.de/documents/N-146437.html [article] Oxidative coupling of methane in a BCFZ perovskite Hollow fiber membrane reactor [texte imprimé] / Oliver Czuprat, Auteur ; Thomas Schiestel, Auteur ; Hartwig Voss, Auteur . - 2011 . - pp.10230-10236. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 21 (Novembre 2010) . - pp.10230-10236 Mots-clés : Membrane reactor Hollow fiber Résumé : A membrane reactor that incorporated hollow fiber in combination with an established catalyst was used for the oxidative coupling of methane (OCM). A perovskite membrane of the composition BaCoxFeyZrzO3-delta (BCFZ, x + y + z = 1) allows a controlled oxygen feed into the reactor over its axial length. Using this novel hollow fiber membrane reactor with a 2 wt % Mn/5 wt Na2WO4 on SiO2 catalyst as a packed bed around the fiber, oxygen separation from air and C-2 formation could be established at 800 degrees C with long-term stability. The highest C-2 selectivity of similar to 75% was observed at a methane conversion of 6% with a C2H4:C2H6 ratio of 2:1. The highest C2H4:C2H6 ratio of 4:1 and maximum C-2 yield of 17% was obtained at 50% C-2 selectivity. It is known from the literature that such results can be obtained without a catalyst in a similar membrane reactor only at temperatures 150 degrees C higher. ISSN : 0888-5885 En ligne : http://publica.fraunhofer.de/documents/N-146437.html

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