Method for impregnation of molecular sieve-binder extrudates

B - Operations – Transporting – 01 – J

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B01J 37/00 (2006.01) B01J 29/064 (2006.01) B01J 29/42 (2006.01) B01J 29/44 (2006.01) B01J 29/66 (2006.01) B01J 29/72 (2006.01) B01J 37/02 (2006.01) C10G 45/64 (2006.01)

Patent

CA 2379920

Method for impregnating a Group VIII metal on a molecular sieve- binder extrudate wherein the binder comprises a low acidity refractory oxide binder material, which is essentially free of alumina, by: a) contacting the molecular sieve-binder extrudate with an aqueous solution of a corresponding Group VIII metal nitrate salt having a pH of below 8, wherein the molar ratio between the Group VIII metal cations in the solution and the number of sorption sites present in the extrudate is equal to or larger than 1; b) drying the molecular sieve-binder extrudate obtained from step a).

L'invention concerne un procédé d'imprégnation d'un métal du groupe VIII sur un tamis moléculaire extrudat liant, dans lequel le liant comprend un matériau liant réfractaire à base d'oxyde et à faible acidité, sensiblement exempt d'alumine. Ce procédé consiste a) à mettre en contact le tamis moléculaire extrudat liant et une solution aqueuse à base d'un nitrate d'un métal du groupe VIII correspondant, ayant un pH inférieur ou égal à 8, dans lequel le rapport molaire entre les cations des métaux du groupe VIII dans la solution et le nombre de sites de sorption présents dans l'extrudat est supérieur ou égal à 1 ; et b) à sécher le tamis moléculaire liant extrudat obtenu à l'étape a).

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