Heavy aromatics processing catalyst and process of using the...

C - Chemistry – Metallurgy – 07 – C

Patent

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C07C 6/12 (2006.01) C07C 15/08 (2006.01)

Patent

CA 2702423

This disclosure relates to a catalyst system adapted for transalkylation a C9+ aromatic feedstock with a C6-C7 aromatic feedstock, comprising: (a) a first catalyst comprising a first molecular sieve having a Constraint Index in the range of 3-12 and 0.01 to 5 wt.% of at least one source of a first metal element of Groups 6-10; and (b) a second catalyst comprising a second molecular sieve having a Constraint Index less than 3 and 0 to 5 wt.% of at least one source of a second metal element of Groups 6-10, wherein the weight ratio of the first catalyst over the second catalyst is in the range of 5:95 to 75:25 and wherein the first catalyst is located in front of the second catalyst when they are brought into contacting with the C9+ aromatic feedstock and the C6-C7 aromatic feedstock in the present of hydrogen.

Cette invention concerne un système catalytique conçu pour une transalkylation d'une charge d'alimentation aromatique en C9+ par une charge d'alimentation aromatique en C6-C7. Ledit système comporte : (a) un premier catalyseur comportant un premier tamis moléculaire ayant un indice de contrainte dans la plage de 3 à 12, et de 0,01 à 5 % en poids d'au moins une source d'un premier élément métallique des groupes 6-10 ; et (b) un second catalyseur comportant un second tamis moléculaire ayant un indice de contrainte inférieur à 3, et de 0 à 5 % en poids d'au moins une source d'un second élément métallique des groupes 6-10, le rapport en poids du premier catalyseur sur le second catalyseur se situant dans la plage de 5:95 à 75:25, le premier catalyseur étant situé devant le second catalyseur lorsqu'ils sont amenés en contact avec la charge d'alimentation aromatique en C9+ et la charge d'alimentation aromatique en C6-C7 en présence d'hydrogène.

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