Copper chromite hydrogenation catalyst

Details Copper chromite hydrogenation catalyst Copper chromite hydrogenation catalyst

B - Operations, Transporting

01

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260/637, 252/67,

B01J 23/86 (2006.01) B01J 35/10 (2006.01) B01J 37/08 (2006.01) B01J 37/18 (2006.01) C07C 31/02 (2006.01) C07C 33/22 (2006.01)

Patent

CA 1325419

ABSTRACT COPPER CHROMITE HYDROGENATION CATALYST A copper chromite hydrogenation catalyst of enhanced activity is obtained by an ante-pre-reduction treatment in which a copper chromite catalyst precursor is soaked in a reducing atmosphere at temperatures below a pre-reduction temperature (typically about 140 °C) at which appreciable pre-reduction of the catalyst can be detected. This catalyst is characterised by particles of reduced copper substantially all of which have an average particle size of less than about 300 x 10-10 m (300.ANG.), which have an average particle size of less than about 100 x 10-10 m (100.ANG.), and which are substantially uniform- ly distributed on a chromium-containing support. Typi- cally such catalysts exhibit a copper surface area of about 18.5 m2/g as determined by N2O decomposition at 20°C, compared to a corresponding copper surface area of 4.5 m2/g for a catalyst which has been produced by conven- tional pre-reduction of the same catalyst precursor.

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