Process for producing narrow-pore catalyst supports

Details Process for producing narrow-pore catalyst supports Process for producing narrow-pore catalyst supports

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B01J 21/04 (2006.01) B01J 27/16 (2006.01) B01J 32/00 (2006.01) B01J 35/10 (2006.01) B01J 37/03 (2006.01) C10G 45/08 (2006.01)

Patent

CA 1256851

K 2465 A B S T R A C T PROCESS FOR PRODUCING NARROW-PORE CATALYST SUPPORTS A process for the preparation of narrow-pore alumina supports having surface areas above 300 m2/g, at least 80% of the pore diameters less than 5 nm, a crush strength greater than 88 N and containing an amount of phosphorus in the range from 0.1% to 4.5% by weight, which process comprises: a) precipitating an acid aluminium salt in an aqueous solution in the presence of a phosphorus-containing compound by contact with a basic aluminium compound, b) aging the precipitate at a temperature in the range between 20 °C and 90 °C for at least 15 minutes at a pH in the range between 9.0 to 11.0, c) washing the precipitate, d) drying the precipitate, and e) calcining the precipitate at a temperature ranging from 300 °C to 900 °C. DDR4H04

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