Nickel-based catalyst, its preparation and its application

Details Nickel-based catalyst, its preparation and its application Nickel-based catalyst, its preparation and its application

B - Operations, Transporting

01

J

260/755, 252/83,

B01J 23/74 (2006.01) B01J 23/755 (2006.01) B01J 35/10 (2006.01)

Patent

CA 1219575

R 297 (R) ABSTRACT The invention provides nickel-based catalysts suitable for hydrogenation reactions comprising a water soluble, silica containing carrier material amounting to 90-10 parts by weight and 10-90 parts by weight of nickel/nickel compound, having an overall active nickel surface of 70- 200 m2/g, nickel/nickel compound aggregates with an average particle size of 2-100 micrometers, which aggregates are for at least 60%, preferably for at least 80% free of carrier particles. The average nickel crystallite size is preferably between 0.5 and 10 nanometers, more preferably between 1 and 3 nanometers. The catalysts can be prepared in a multistep process involving rapid precipitation of nickel compound, an insoluble carrier and a distinct, much longer ageing step followed by separation of solids, drying and activation.

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