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Selective oxidation of cyclohexane over transition - metal - incorporated HMS in a solvent - free system / Jun Li in Industrial & engineering chemistry research, Vol. 49 N° 11 (Juin 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 11 (Juin 2010) . - pp. 5392–5399 Titre : Selective oxidation of cyclohexane over transition - metal - incorporated HMS in a solvent - free system Type de document : texte imprimé Auteurs : Jun Li, Auteur ; Yong Shi, Auteur ; Xu, Li, Auteur Année de publication : 2010 Article en page(s) : pp. 5392–5399 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Cyclohexane  Oxidation Résumé : Mesostructure materials A-HMS (A = Ce, Ti, Co, Al, Cr, V, Zr) were synthesized with cetylamine as the structure director and tetraethyl orthosilicalite as the silica source. CeO2/V-HMS and CeO2/Al-HMS were prepared by dipping-calcination method. The materials were characterized by X-ray diffraction (XRD), UV−vis, Fourier transform infrared (FT-IR), N2 adsorption−desorption, inductively coupled plasma−atomic emission spectroscopy (ICP-AES), transmission electron microscopy (TEM), and 27Al magic angle spinning nuclear magnetic resonance (MAS NMR). The incorporated ions were mostly in the framework of the mesoporous materials, which were confirmed by the XRD, FT-IR, UV−vis, and 27Al MAS NMR analyses. The solids obtained were employed as heterogeneous catalysts for the selective oxidation of cyclohexane with oxygen (O2) as oxidant in a solvent-free system. The material CeO2/V-HMS exhibited the highest activity with about 18% conversion of cyclohexane but 68% total selectivity to cyclohexanol and cyclohexanone. The performance of Al(40)-HMS is satisfying for nearly 10% conversion of cyclohexane and 93% total selectivity to the desired products. Also, Al(40)-HMS is efficient for its excellent recyclable property in the oxidation of cyclohexane. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100092x [article] Selective oxidation of cyclohexane over transition - metal - incorporated HMS in a solvent - free system [texte imprimé] / Jun Li, Auteur ; Yong Shi, Auteur ; Xu, Li, Auteur . - 2010 . - pp. 5392–5399. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 11 (Juin 2010) . - pp. 5392–5399 Mots-clés : Cyclohexane  Oxidation Résumé : Mesostructure materials A-HMS (A = Ce, Ti, Co, Al, Cr, V, Zr) were synthesized with cetylamine as the structure director and tetraethyl orthosilicalite as the silica source. CeO2/V-HMS and CeO2/Al-HMS were prepared by dipping-calcination method. The materials were characterized by X-ray diffraction (XRD), UV−vis, Fourier transform infrared (FT-IR), N2 adsorption−desorption, inductively coupled plasma−atomic emission spectroscopy (ICP-AES), transmission electron microscopy (TEM), and 27Al magic angle spinning nuclear magnetic resonance (MAS NMR). The incorporated ions were mostly in the framework of the mesoporous materials, which were confirmed by the XRD, FT-IR, UV−vis, and 27Al MAS NMR analyses. The solids obtained were employed as heterogeneous catalysts for the selective oxidation of cyclohexane with oxygen (O2) as oxidant in a solvent-free system. The material CeO2/V-HMS exhibited the highest activity with about 18% conversion of cyclohexane but 68% total selectivity to cyclohexanol and cyclohexanone. The performance of Al(40)-HMS is satisfying for nearly 10% conversion of cyclohexane and 93% total selectivity to the desired products. Also, Al(40)-HMS is efficient for its excellent recyclable property in the oxidation of cyclohexane. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100092x