Anchored Wilkinson's Catalyst: Comparison with the Homogeneous Catalyst and Supported Rhodium with Respect to Reaction Selectivity

摘要

A series of anchored Wilkinson's catalysts were prepared by reacting the homogeneous Wilkinson catalyst with several alumina/heteropoly acid support materials. These catalysts were used to promote the hydrogenation of 1-hexene. The results were compared with those obtained using the homogeneous Wilkinson and a 1%Rh/Al_20_3 catalyst with respect to catalyst activity and stability as well as the reaction selectivity as measured by the amount of double bond isomerization observed. The effect which the nature of the heteropoly acid exerted on the reaction was also examined.The results of these hydrogenations will be discussed along with data relating to the composition of the anchored catalyst before and after hydrogenation.