Catalyst treatment useful for aromatics conversion process

Details Catalyst treatment useful for aromatics conversion process Catalyst treatment useful for aromatics conversion process

2007-05-22

2007-05-22

Sample, David (Department: 1755)

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By alkyl or aryl transfer between molecules, e.g.,...

C585S448000, C502S074000, C502S077000, C502S078000, C502S216000, C502S238000, C502S240000, C502S256000

Reexamination Certificate

active

10855463

ABSTRACT:
A process for preparing a transalkylation catalyst, the catalyst itself, and a transalkylation process for using the catalyst are herein disclosed. The catalyst comprises rhenium metal on a solid-acid support such as mordenite, which has been treated with a sulfur-based agent. Such treatment reduces the amount of methane produced by metal hydrogenolysis in a transalkylation process wherein heavy aromatics like A9+ are reacted with toluene to produce xylenes. Reduced methane production relative to total light ends gas production results in lower hydrogen consumption and lower reactor exotherms.

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