Catalyst treatment useful for aromatics conversion process

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

2007-09-25

2007-09-25

Lorengo, J. A. (Department: 1755)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Sulfur or compound containing same

C502S074000, C502S077000, C502S078000, C502S236000, C502S240000, C502S256000, C585S448000

Reexamination Certificate

active

10855139

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.

REFERENCES:
patent: 3702886 (1972-11-01), Argauer et al.
patent: 3709979 (1973-01-01), Chu
patent: 3832449 (1974-08-01), Rosinski et al.
patent: 3849340 (1974-11-01), Pollitzer
patent: RE28341 (1975-02-01), Wadlinger et al.
patent: 4076842 (1978-02-01), Plank et al.
patent: 4159282 (1979-06-01), Olson et al.
patent: 4163018 (1979-07-01), Tada et al.
patent: 4183827 (1980-01-01), Adams et al.
patent: 4241036 (1980-12-01), Flanigen et al.
patent: 4278565 (1981-07-01), Chen et al.
patent: 4365104 (1982-12-01), Kaeding
patent: 4440871 (1984-04-01), Lok et al.
patent: 4537754 (1985-08-01), Casci et al.
patent: 4556477 (1985-12-01), Dwyer
patent: 4567029 (1986-01-01), Wilson et al.
patent: 4857666 (1989-08-01), Barger et al.
patent: 5004855 (1991-04-01), Tada et al.
patent: 5296208 (1994-03-01), Lesch
patent: 5723710 (1998-03-01), Gajda et al.
patent: 5763720 (1998-06-01), Buchanan et al.
patent: 5905051 (1999-05-01), Wu et al.
patent: 6060417 (2000-05-01), Kato et al.
patent: 6486372 (2002-11-01), Merlen et al.
patent: 6613709 (2003-09-01), Merlen et al.
patent: 6815570 (2004-11-01), Negiz et al.
patent: 6864400 (2005-03-01), Merlen et al.
patent: 2005/0202955 (2005-09-01), McMinn et al.
patent: 0 378 916 (1992-11-01), None

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