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Highly active and selective nanoalumina-supported wilkinson’s catalysts for hydroformylation of styrene / Peng Li in Industrial & engineering chemistry research, Vol. 48 N°4 (Février 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N°4 (Février 2009) . - pp. 1824–1830 Titre : Highly active and selective nanoalumina-supported wilkinson’s catalysts for hydroformylation of styrene Type de document : texte imprimé Auteurs : Peng Li, Auteur ; Warintorn Thitsartarn, Auteur ; Sibudjing Kawi, Auteur Année de publication : 2009 Article en page(s) : pp. 1824–1830 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Nano-Al2O3  particles  Polyamidoamine  dendrimers  Wilkinson’s  catalyst Résumé : Uniform nano-Al2O3 particles were functionalized with surface amine ligands to form G0/nano-Al2O3 (where G stands for dendrimer generation) and then grafted with first generation PAMAM (polyamidoamine) dendrimers to form G1/nano-Al2O3. G0/nano-Al2O3 and G1/nano-Al2O3 were used to tether Wilkinson’s catalyst (RhCl(PPh3)3) to produce heterogenized rhodium complex catalysts, named respectively as Rh/G0/nano-Al2O3 and Rh/G1/nano-Al2O3. Both Rh/G0/nano-Al2O3 and Rh/G1/nano-Al2O3 catalysts show much higher activity and selectivity for hydroformylation of styrene than RhCl(PPh3)3 anchored on supports such as α-Al2O3, γ-Al2O3, and SBA-15. An increase of regioselectivity was observed from Rh/G0/nano-Al2O3 to Rh/G1/nano-Al2O3, showing the positive dendrimer effect on promoting the selectivity of styrene hydroformylation. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800715k [article] Highly active and selective nanoalumina-supported wilkinson’s catalysts for hydroformylation of styrene [texte imprimé] / Peng Li, Auteur ; Warintorn Thitsartarn, Auteur ; Sibudjing Kawi, Auteur . - 2009 . - pp. 1824–1830. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N°4 (Février 2009) . - pp. 1824–1830 Mots-clés : Nano-Al2O3  particles  Polyamidoamine  dendrimers  Wilkinson’s  catalyst Résumé : Uniform nano-Al2O3 particles were functionalized with surface amine ligands to form G0/nano-Al2O3 (where G stands for dendrimer generation) and then grafted with first generation PAMAM (polyamidoamine) dendrimers to form G1/nano-Al2O3. G0/nano-Al2O3 and G1/nano-Al2O3 were used to tether Wilkinson’s catalyst (RhCl(PPh3)3) to produce heterogenized rhodium complex catalysts, named respectively as Rh/G0/nano-Al2O3 and Rh/G1/nano-Al2O3. Both Rh/G0/nano-Al2O3 and Rh/G1/nano-Al2O3 catalysts show much higher activity and selectivity for hydroformylation of styrene than RhCl(PPh3)3 anchored on supports such as α-Al2O3, γ-Al2O3, and SBA-15. An increase of regioselectivity was observed from Rh/G0/nano-Al2O3 to Rh/G1/nano-Al2O3, showing the positive dendrimer effect on promoting the selectivity of styrene hydroformylation. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800715k