Documents disponibles écrits par cet auteur

Catalytic activity in naphthalene reforming of two types of catalytic filters for hot gas cleaning of biomass-derived syngas / Manfred Nacken in Industrial & engineering chemistry research, Vol. 49 N° 12 (Juin 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 12 (Juin 2010) . - pp. 5536–5542 Titre : Catalytic activity in naphthalene reforming of two types of catalytic filters for hot gas cleaning of biomass-derived syngas Type de document : texte imprimé Auteurs : Manfred Nacken, Auteur ; Lina Ma, Auteur ; Steffen Heidenreich, Auteur Année de publication : 2010 Article en page(s) : pp. 5536–5542 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Catalytic  filters  Naphthalene Résumé : The catalytic activity in the reforming of naphthalene of two different types of catalytic filter candles for biomass-derived syngas cleaning are presented and compared at superficial velocities of 72 and 90 m/h, respectively. The tests were performed in a laboratory setup on a fixed catalyst bed and small sections of full size candles. In a 50 h long-term test of the first candle type of fixed bed design, complete naphthalene conversion was found at 800 °C, 100 ppmv H2S, and an average superficial velocity of 135 m/h for the integrated Ni catalyst. Doubling the naphthalene concentration from 5 to 10 g/Nm3 has also led to complete conversion in a short-term test at a superficial velocity of 90 m/h. Because of easier manufacturing of the second candle type, several candles of a catalytic layer design were prepared by using different MgO-containing support materials and adjusting NiO loadings between 35 and 194 wt %. As compared to previous work, a conversion increase from 58 to 74% was achieved at 800 °C, 100 ppmv H2S, and a superficial velocity of 90 m/h that was further improved to 87% by decreasing the superficial velocity to 72 m/h. In the absence of H2S, 96 or 97% conversion was achieved, respectively. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901428b [article] Catalytic activity in naphthalene reforming of two types of catalytic filters for hot gas cleaning of biomass-derived syngas [texte imprimé] / Manfred Nacken, Auteur ; Lina Ma, Auteur ; Steffen Heidenreich, Auteur . - 2010 . - pp. 5536–5542. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 12 (Juin 2010) . - pp. 5536–5542 Mots-clés : Catalytic  filters  Naphthalene Résumé : The catalytic activity in the reforming of naphthalene of two different types of catalytic filter candles for biomass-derived syngas cleaning are presented and compared at superficial velocities of 72 and 90 m/h, respectively. The tests were performed in a laboratory setup on a fixed catalyst bed and small sections of full size candles. In a 50 h long-term test of the first candle type of fixed bed design, complete naphthalene conversion was found at 800 °C, 100 ppmv H2S, and an average superficial velocity of 135 m/h for the integrated Ni catalyst. Doubling the naphthalene concentration from 5 to 10 g/Nm3 has also led to complete conversion in a short-term test at a superficial velocity of 90 m/h. Because of easier manufacturing of the second candle type, several candles of a catalytic layer design were prepared by using different MgO-containing support materials and adjusting NiO loadings between 35 and 194 wt %. As compared to previous work, a conversion increase from 58 to 74% was achieved at 800 °C, 100 ppmv H2S, and a superficial velocity of 90 m/h that was further improved to 87% by decreasing the superficial velocity to 72 m/h. In the absence of H2S, 96 or 97% conversion was achieved, respectively. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901428b

Vapor-phase adsorption and separation of ethylbenzene and styrene on the metal–organic frameworks MIL-47 and MIL-53(Al) / Tom Remy in Industrial & engineering chemistry research, Vol. 51 N° 45 (Novembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 45 (Novembre 2012) . - pp. 14824-14833 Titre : Vapor-phase adsorption and separation of ethylbenzene and styrene on the metal–organic frameworks MIL-47 and MIL-53(Al) Type de document : texte imprimé Auteurs : Tom Remy, Auteur ; Lina Ma, Auteur ; Michael Maes, Auteur Année de publication : 2013 Article en page(s) : pp. 14824-14833 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Adsorption Résumé : Separation of styrene (ST) from ethylbenzene (EB) remains an industrially relevant challenge in the production of polystyrene. Adsorptive separation with metal—organic frameworks (MOFs) is a potential alternative for the conventional vacuum distillation process. Adsorption and separation of ST and EB on the MOFs MIL-47 and MIL-53(Al) were studied under vapor-phase conditions. ST and EB show traditional type I isotherms on MIL-47. Contrarily, ST adsorption isotherms show steep steps on MIL-53(Al) as a result of the breathing of the flexible MOF upon increased adsorbate pressure. The separation potential of both MOFs was investigated by performing vapor-phase breakthrough experiments at total hydrocarbon partial pressures between 1.14 and 16.4 mbar and temperatures between 35 and 90 °C. ST is preferentially adsorbed on both MOFs. Although the MOFs are isostructural, the evolution of selectivity with temperature and pressure is different for both materials due to the different interaction and separation mechanisms. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26620395 [article] Vapor-phase adsorption and separation of ethylbenzene and styrene on the metal–organic frameworks MIL-47 and MIL-53(Al) [texte imprimé] / Tom Remy, Auteur ; Lina Ma, Auteur ; Michael Maes, Auteur . - 2013 . - pp. 14824-14833. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 45 (Novembre 2012) . - pp. 14824-14833 Mots-clés : Adsorption Résumé : Separation of styrene (ST) from ethylbenzene (EB) remains an industrially relevant challenge in the production of polystyrene. Adsorptive separation with metal—organic frameworks (MOFs) is a potential alternative for the conventional vacuum distillation process. Adsorption and separation of ST and EB on the MOFs MIL-47 and MIL-53(Al) were studied under vapor-phase conditions. ST and EB show traditional type I isotherms on MIL-47. Contrarily, ST adsorption isotherms show steep steps on MIL-53(Al) as a result of the breathing of the flexible MOF upon increased adsorbate pressure. The separation potential of both MOFs was investigated by performing vapor-phase breakthrough experiments at total hydrocarbon partial pressures between 1.14 and 16.4 mbar and temperatures between 35 and 90 °C. ST is preferentially adsorbed on both MOFs. Although the MOFs are isostructural, the evolution of selectivity with temperature and pressure is different for both materials due to the different interaction and separation mechanisms. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26620395