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Cu x H 3 - 2 x PW12O40 supported on MCM - 41 / Dharitri Rath in Industrial & engineering chemistry research, Vol. 49 N° 19 (Octobre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 19 (Octobre 2010) . - pp. 8942-8948 Titre : Cu x H 3 - 2 x PW12O40 supported on MCM - 41 : Their activity to heck vinylation of aryl halides Type de document : texte imprimé Auteurs : Dharitri Rath, Auteur ; Surjyakanta Rana, Auteur ; K. M. Parida, Auteur Année de publication : 2010 Article en page(s) : pp. 8942-8948 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Heteropoly  acid  Catalysts Résumé : A series of Cu salts of heteropoly acid (CuxH3−2xPW12O40) supported MCM-41 catalysts (CuxH3−2xPW12O40/MCM-41) was synthesized by wet impregnation method and thoroughly characterized by using various analytical techniques, viz., X-ray diffraction, UV−vis diffused reflectance spectroscopy (UV−vis DRS), nitrogen adsorption desorption, temperature-programmed reduction (TPR), transmission electron microscopy (TEM), and Fourier transform infrared spectroscopy (FT-IR). From XRD and FT-IR studies, we confirmed that the Keggin structure of heteropoly acid (HPA) is retained in Cu salt of HPA. Heck vinylation was performed to examine the catalytic properties of the catalysts. The 50 wt % CuxH3−2xPW12O40/MCM-41 showed remarkable catalytic performance of phenyl iodide (98% conversion) to cinnamic acid in aqueous medium compared with MCM-41 and other catalytic systems. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100895v [article] Cu x H 3 - 2 x PW12O40 supported on MCM - 41 : Their activity to heck vinylation of aryl halides [texte imprimé] / Dharitri Rath, Auteur ; Surjyakanta Rana, Auteur ; K. M. Parida, Auteur . - 2010 . - pp. 8942-8948. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 19 (Octobre 2010) . - pp. 8942-8948 Mots-clés : Heteropoly  acid  Catalysts Résumé : A series of Cu salts of heteropoly acid (CuxH3−2xPW12O40) supported MCM-41 catalysts (CuxH3−2xPW12O40/MCM-41) was synthesized by wet impregnation method and thoroughly characterized by using various analytical techniques, viz., X-ray diffraction, UV−vis diffused reflectance spectroscopy (UV−vis DRS), nitrogen adsorption desorption, temperature-programmed reduction (TPR), transmission electron microscopy (TEM), and Fourier transform infrared spectroscopy (FT-IR). From XRD and FT-IR studies, we confirmed that the Keggin structure of heteropoly acid (HPA) is retained in Cu salt of HPA. Heck vinylation was performed to examine the catalytic properties of the catalysts. The 50 wt % CuxH3−2xPW12O40/MCM-41 showed remarkable catalytic performance of phenyl iodide (98% conversion) to cinnamic acid in aqueous medium compared with MCM-41 and other catalytic systems. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100895v