Documents disponibles écrits par cet auteur

Adsorption/Reduction of NO2 on Graphite Oxide/Iron Composites / Svetlana Bashkova in Industrial & engineering chemistry research, Vol. 48 N° 24 (Décembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 10884–10891 Titre : Adsorption/Reduction of NO2 on Graphite Oxide/Iron Composites Type de document : texte imprimé Auteurs : Svetlana Bashkova, Auteur ; Teresa J. Bandosz, Auteur Année de publication : 2010 Article en page(s) : pp. 10884–10891 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Adsorption--Reduction--NO2--Graphite--Oxide/Iron--Composites Résumé : Adsorption of NO2 and the retention of NO (the product of NO2 reduction by carbon) on the materials prepared from iron acetato complex and its mixture with graphite oxide were studied. The surface of the materials was characterized using adsorption of nitrogen, X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR), and thermogravimetric analysis (TGA). The results showed that the development of texture and porosity along with formation of some active surface species on the graphite oxide/iron composite materials leads to an increase in NO2 adsorption. An immediate reduction of NO2 to NO by carbon was noticed for all samples except for the one that contained a smallest amount of carbon in a mostly oxidized form. The retention of NO on the surface of the materials does not depend on their structural characteristics. Better performance is found for the materials that contain active iron species, such as γ-FeOOH and α-Fe2O3, which likely react with NO molecules forming surface nitrates. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901054p [article] Adsorption/Reduction of NO2 on Graphite Oxide/Iron Composites [texte imprimé] / Svetlana Bashkova, Auteur ; Teresa J. Bandosz, Auteur . - 2010 . - pp. 10884–10891. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 10884–10891 Mots-clés : Adsorption--Reduction--NO2--Graphite--Oxide/Iron--Composites Résumé : Adsorption of NO2 and the retention of NO (the product of NO2 reduction by carbon) on the materials prepared from iron acetato complex and its mixture with graphite oxide were studied. The surface of the materials was characterized using adsorption of nitrogen, X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR), and thermogravimetric analysis (TGA). The results showed that the development of texture and porosity along with formation of some active surface species on the graphite oxide/iron composite materials leads to an increase in NO2 adsorption. An immediate reduction of NO2 to NO by carbon was noticed for all samples except for the one that contained a smallest amount of carbon in a mostly oxidized form. The retention of NO on the surface of the materials does not depend on their structural characteristics. Better performance is found for the materials that contain active iron species, such as γ-FeOOH and α-Fe2O3, which likely react with NO molecules forming surface nitrates. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901054p

Adsorption/reduction of NO2 on graphite oxide/Iron composites / Svetlana Bashkova in Industrial & engineering chemistry research, Vol. 48 N° 24 (Décembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 10884–10891 Titre : Adsorption/reduction of NO2 on graphite oxide/Iron composites Type de document : texte imprimé Auteurs : Svetlana Bashkova, Auteur ; Teresa J. Bandosz, Auteur Année de publication : 2010 Article en page(s) : pp. 10884–10891 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Adsorption  of  NO2  Retention  of  NO  Graphite  oxide  X-ray  diffraction  Scanning  electron  microscopy  Fourier  transform  infrared  Thermogravimetric  analysis Résumé : Adsorption of NO2 and the retention of NO (the product of NO2 reduction by carbon) on the materials prepared from iron acetato complex and its mixture with graphite oxide were studied. The surface of the materials was characterized using adsorption of nitrogen, X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR), and thermogravimetric analysis (TGA). The results showed that the development of texture and porosity along with formation of some active surface species on the graphite oxide/iron composite materials leads to an increase in NO2 adsorption. An immediate reduction of NO2 to NO by carbon was noticed for all samples except for the one that contained a smallest amount of carbon in a mostly oxidized form. The retention of NO on the surface of the materials does not depend on their structural characteristics. Better performance is found for the materials that contain active iron species, such as γ-FeOOH and α-Fe2O3, which likely react with NO molecules forming surface nitrates. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901054p [article] Adsorption/reduction of NO2 on graphite oxide/Iron composites [texte imprimé] / Svetlana Bashkova, Auteur ; Teresa J. Bandosz, Auteur . - 2010 . - pp. 10884–10891. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 10884–10891 Mots-clés : Adsorption  of  NO2  Retention  of  NO  Graphite  oxide  X-ray  diffraction  Scanning  electron  microscopy  Fourier  transform  infrared  Thermogravimetric  analysis Résumé : Adsorption of NO2 and the retention of NO (the product of NO2 reduction by carbon) on the materials prepared from iron acetato complex and its mixture with graphite oxide were studied. The surface of the materials was characterized using adsorption of nitrogen, X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR), and thermogravimetric analysis (TGA). The results showed that the development of texture and porosity along with formation of some active surface species on the graphite oxide/iron composite materials leads to an increase in NO2 adsorption. An immediate reduction of NO2 to NO by carbon was noticed for all samples except for the one that contained a smallest amount of carbon in a mostly oxidized form. The retention of NO on the surface of the materials does not depend on their structural characteristics. Better performance is found for the materials that contain active iron species, such as γ-FeOOH and α-Fe2O3, which likely react with NO molecules forming surface nitrates. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901054p

Investigation of the thermal regeneration efficiency of activated carbons used in the desulfurization of model diesel fuel / Mykola Seredych in Industrial & engineering chemistry research, Vol. 50 N° 24 (Décembre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 24 (Décembre 2011) . - pp.14097–14104 Titre : Investigation of the thermal regeneration efficiency of activated carbons used in the desulfurization of model diesel fuel Type de document : texte imprimé Auteurs : Mykola Seredych, Auteur ; Juliene Rawlins, Auteur ; Teresa J. Bandosz, Auteur Année de publication : 2012 Article en page(s) : pp.14097–14104 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Thermal  regeneration Résumé : Adsorption of dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (DMDBT) from model diesel fuel (MDF) was investigated on a thermally regenerated wood-based carbon and two polymer-derived carbons. The materials were characterized by thermal analysis, potentiometric titration, elemental analysis, adsorption of nitrogen, and mass spectroscopy. The selectivities of DBT and DMDBT were calculated using naphthalene as a reference. The regenerated carbons were found to be very good adsorbents for the desulfurization of MDF. Although most sulfur-containing compounds were adsorbed in the micropores, where dispersive forces govern the adsorption process, DBT and DMDBT were also retained in the larger pores as a result of acid–base and/or polar interactions. This increases the overall adsorption capacity and selectivity. Moreover, thermal regeneration of carbons containing acidic oxygen groups increases their sulfur content and, thus, the contribution of specific adsorption forces involving sulfur–sulfur interactions in both small and larger pores. A significant quantity of the DBT and DMDBT adsorbed in pores larger than 10 Å is oxidized to sulfoxides and sulfones. Sulfur functional groups likely promote this process through oxygen activation. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie202159a [article] Investigation of the thermal regeneration efficiency of activated carbons used in the desulfurization of model diesel fuel [texte imprimé] / Mykola Seredych, Auteur ; Juliene Rawlins, Auteur ; Teresa J. Bandosz, Auteur . - 2012 . - pp.14097–14104. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 24 (Décembre 2011) . - pp.14097–14104 Mots-clés : Thermal  regeneration Résumé : Adsorption of dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (DMDBT) from model diesel fuel (MDF) was investigated on a thermally regenerated wood-based carbon and two polymer-derived carbons. The materials were characterized by thermal analysis, potentiometric titration, elemental analysis, adsorption of nitrogen, and mass spectroscopy. The selectivities of DBT and DMDBT were calculated using naphthalene as a reference. The regenerated carbons were found to be very good adsorbents for the desulfurization of MDF. Although most sulfur-containing compounds were adsorbed in the micropores, where dispersive forces govern the adsorption process, DBT and DMDBT were also retained in the larger pores as a result of acid–base and/or polar interactions. This increases the overall adsorption capacity and selectivity. Moreover, thermal regeneration of carbons containing acidic oxygen groups increases their sulfur content and, thus, the contribution of specific adsorption forces involving sulfur–sulfur interactions in both small and larger pores. A significant quantity of the DBT and DMDBT adsorbed in pores larger than 10 Å is oxidized to sulfoxides and sulfones. Sulfur functional groups likely promote this process through oxygen activation. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie202159a