ISSN:
0009-2940
Keywords:
Clusters
;
Rhodium complexes
;
Hydroformylation
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Large Transition Metal Clusters, VIII. - How Do Supported Rh55 Clusters Behave in the Hydroformylation Process?Two-shell rhodium clusters of the type Rh55L12Clx [L = P(tBu)3, x = 20; L = PPh3, x = 6] can be anchored on TiO2 and Na- Y-zeolite. High resolution transmission electron microscopy (HRTEM), BET, and DSC investigations prove that the clusters, about 20 Å in diameter, are fixed on the entrances of the micropores of the supports. The supported clusters catalyze the hydroformylation of ethene and propene variously. During the hydroformylation of ethene without a solvent or in aqueous suspension the catalyst is inactive after a few cycles. However, there is no loss of activity even after 27 experiments if propene is hydroformylated in an aqueous medium.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19911240902
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