Dehydrogenation of isopropanol on copper - containing mesoporous catalysts / Nancy F. Balsamo in Industrial & engineering chemistry research, Vol. 49 N° 24 (Décembre 2010)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 49 N° 24 (Décembre 2010) . - pp.12365–12370 Titre : Dehydrogenation of isopropanol on copper - containing mesoporous catalysts Type de document : texte imprimé Auteurs : Nancy F. Balsamo, Auteur ; Corina M. Chanquia, Auteur ; Eduardo R. Herrero, Auteur Année de publication : 2011 Article en page(s) : pp.12365–12370 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Mesoporous catalysts Résumé : Copper-containing mesoporous catalysts with an MCM-41 type structure have been prepared using direct hydrothermal synthesis and characterized using XRD, AAS, N2 adsorption−desorption, DRUV−vis, and TEM. All of the samples showed high structural regularity and surface area. Three copper species are presented in these materials: isolated mononuclear Cuδ+ species, oligonuclear [Cuδ+···Oδ−···Cuδ+]n clusters, and bulky CuO oxides. These materials were catalytically tested in isopropanol dehydrogenation, showing good activity and very high selectivity to propanone at 300 °C. A further reduction treatment of the samples allowed us to suggest possible active species. Both the [Cuδ+···Oδ−···Cuδ+]n clusters and the isolated Cuδ+ cations seem to be the species responsible for isopropanol dehydrogenation. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100972h [article] Dehydrogenation of isopropanol on copper - containing mesoporous catalysts [texte imprimé] / Nancy F. Balsamo, Auteur ; Corina M. Chanquia, Auteur ; Eduardo R. Herrero, Auteur . - 2011 . - pp.12365–12370. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 24 (Décembre 2010) . - pp.12365–12370 Mots-clés : Mesoporous catalysts Résumé : Copper-containing mesoporous catalysts with an MCM-41 type structure have been prepared using direct hydrothermal synthesis and characterized using XRD, AAS, N2 adsorption−desorption, DRUV−vis, and TEM. All of the samples showed high structural regularity and surface area. Three copper species are presented in these materials: isolated mononuclear Cuδ+ species, oligonuclear [Cuδ+···Oδ−···Cuδ+]n clusters, and bulky CuO oxides. These materials were catalytically tested in isopropanol dehydrogenation, showing good activity and very high selectivity to propanone at 300 °C. A further reduction treatment of the samples allowed us to suggest possible active species. Both the [Cuδ+···Oδ−···Cuδ+]n clusters and the isolated Cuδ+ cations seem to be the species responsible for isopropanol dehydrogenation. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100972h

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