Disproportionation/transalkylation of aromatic hydrocarbons

Details Disproportionation/transalkylation of aromatic hydrocarbons Disproportionation/transalkylation of aromatic hydrocarbons

2005-03-15

2005-03-15

Ildebrando, Christina (Department: 1725)

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

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

C585S467000

Reexamination Certificate

active

06867340

ABSTRACT:
A catalyst for the disproportionation/transalkylation of various hydrocarbons consists of a carrier and a metal component supported on the carrier. The carrier comprises 10 to 80 wt % of mordenite and/or beta type zeolite with a mole ratio of silica/alumina ranging from 10 to 200; 0 to 70 wt % of ZSM-5 type zeolite with a mole ratio of silica/alumina ranging from 30 to 500; and 5 to 90 wt % of at least one inorganic binder selected from the group consisting of gamma-alumina, silica, silica alumina, bentonite, kaolin, clinoptilolite, and montmorillonite. The metal component comprises platinum and either tin or lead. The catalyst enables mixed xylenes to be produced at remarkably high yields from benzene, toluene and C9 or higher aromatic compounds through disproportionation/transalkylation with a great reduction in aromatic loss. In addition, the catalyst can maintain its catalytic activity for a long period of time without deactivation.

REFERENCES:
patent: 3702293 (1972-11-01), Hayes et al.
patent: 4083886 (1978-04-01), Michalko
patent: 4645752 (1987-02-01), Dufresne et al.
patent: 4723048 (1988-02-01), Dufresne et al.
patent: 4939110 (1990-07-01), Sachtler et al.
patent: 4977121 (1990-12-01), Dufresne et al.
patent: 5030787 (1991-07-01), Absil et al.
patent: 5416052 (1995-05-01), de Agudelo et al.
patent: 5475179 (1995-12-01), Shamshoum et al.
patent: 5475180 (1995-12-01), Chang et al.
patent: 5759950 (1998-06-01), Gui et al.
patent: 5804059 (1998-09-01), Wu et al.
patent: 5898011 (1999-04-01), Wu et al.
patent: 6060417 (2000-05-01), Kato et al.
patent: 6150292 (2000-11-01), Merlen et al.
patent: 6486372 (2002-11-01), Merlen et al.
patent: 6635792 (2003-10-01), Choi et al.
patent: 19641149 (1997-04-01), None
patent: 0390058 (1990-01-01), None
patent: 0816311 (1998-01-01), None
patent: 2761905 (1998-10-01), None
patent: 9-271640 (1997-10-01), None

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