Method for preparing hydrogenation purification catalyst

Details Method for preparing hydrogenation purification catalyst Method for preparing hydrogenation purification catalyst

B - Operations, Transporting

01

J

B01J 37/08 (2006.01) B01J 37/04 (2006.01) C10G 45/04 (2006.01) C10G 45/08 (2006.01) C10G 45/12 (2006.01)

Patent

CA 2444285

A method for producing a hydrorefining catalyst is used to produce the hydrorefining catalyst which contains an inorganic oxide carrier and a hydrogenation-active metal and which has such a bimodal pore characteristic that pores having pore diameters of not more than 50 nm have a pore volume of not less than 0.4 cm3/g, pores having pore diameters of not less than 50 nm have a pore volume of not less than 0.2 cm3/g, and pores having pore diameters of not less than 1000 nm have a pore volume of not more than 0.1 cm3/g. The method comprises the steps of mixing and forming a pseudo-boehmite powder having a dispersibility index of 0.13 to 0.28, and calcinating the formed pseudo-boehmite under a condition in which the pseudo-boehmite is converted into .gamma.-alumina. The hydrorefining catalyst, which has the bimodal pore characteristic, can be produced easily at low cost.

La présente invention concerne un procédé de préparation d'un catalyseur d'hydrogénation de purification (démétallisation) contenant un porteur oxyde inorganique et un métal actif pour l'hydrogénation et présentant une caractéristique de pore bimodale, les pores d'un diamètre de 50nm au maximum possédant un volume de 0,4 cm?3¿/g, les pores d'un diamètre de 50 au moins possédant un volume de 0,2 cm?3¿/g au moins et les pores possédant un diamètre de 1000 nm au moins possédant un volume de 0,1 cm?3¿/g au maximum. Ce procédé consiste à soumettre une poudre de quasi boehmite possédant un indice de peptisation compris entre 0,13 et 0,28 à un mélange et à une mise en forme, à cuire cette quasi boehmite mise en forme dans des conditions dans lesquelles cette dernière est transformée en alumine .UPSILON.. Ce procédé permet de préparer facilement et simplement un catalyseur d'hydrogénation de purification présentant une caractéristique de pore bimodale à un coût réduit.

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