| Titre : | Highly active and selective nanoalumina-supported wilkinson’s catalysts for hydroformylation of styrene (2009) |
| Auteurs : | Peng Li, Auteur ; Warintorn Thitsartarn, Auteur ; Sibudjing Kawi, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 48 N°4, Février 2009) |
| Article en page(s) : | pp. 1824–1830 |
| Note générale : | Chemical engineering |
| Langues : | Anglais |
| Tags : | 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 |
