Hydrogenation catalyst shapes

Details Hydrogenation catalyst shapes Hydrogenation catalyst shapes

C - Chemistry, Metallurgy

07

C

252/38

C07C 29/136 (2006.01) B01J 23/72 (2006.01) C07C 29/149 (2006.01) C07C 31/20 (2006.01)

Patent

CA 1284486

ABSTRACT OF THE DISCLOSURE An improved calcined hydrogenation catalyst shape which is useful for the catalysis of hydrogenation reactions in a tubular reactor is provided. The catalyst shape has an annular configuration with an open center core, and wherein the shape contains, as a reinforcing matrix distributed therein, up to about 50 per cent by weight of milled glass fibers having specific dimensions and wherein the crush strength of the shape is vastly improved with little change in catalytic activity over the non-reinforced shape of comparable size. Additionally, when the shapes of the present invention are employed pressure-drop and diffusion problems are reduced. The catalyst shapes are particularly useful for the hydrogenation of alkyl oxalates to ethylene glycol whereby the reaction can be conducted at lower temperatures and hence by-product formation is minimized.

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