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

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

2011-03-01

2011-03-01

Dang, Thuan Dinh (Department: 1771)

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

To produce aromatic

C585S475000

Reexamination Certificate

active

07897825

ABSTRACT:
This disclosure relates to a catalyst system adapted for transalkylation a C9+ aromatic feedstock with a C6-C7aromatic 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-C7aromatic feedstock in the present of hydrogen.

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