Supported transition metal catalysts and improved process...

Details Supported transition metal catalysts and improved process... Supported transition metal catalysts and improved process...

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B01J 31/02 (2006.01) B01J 37/00 (2006.01) B01J 37/02 (2006.01) C07C 5/03 (2006.01) C08G 63/82 (2006.01) C11C 3/00 (2006.01) C11C 3/04 (2006.01) C11C 3/10 (2006.01)

Patent

CA 1083559

ABSTRACT OF THE DISCLOSURE An improved process is provided herein for the preparation of immo- bilized free-flowing, hydrolytically stable transition metal catalysts by the reaction of an hydroxylic support and a particularly specified transi- tion metal alkoxide, the catalysts so formed thereby containing up to 60 wt. % bound transition metal bound to the surface thereof. These catalysts are obtained by heating the hydroxylic support with an excess of the transi- tion metal alkoxide (based on the available surface hydroxyl group) in an inert hydrocarbon and in the presence of water at a temperature of 100- 300°C. This effects condensation of the transition metal alkoxide or oli- gomer thereof with the surface hydroxyl group. These supported catalysts have high activity and good stability in the presence of water and are free-flowing powder. They are extremely useful in esterification processes.

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