Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By isomerization
Patent
1994-11-18
1996-05-14
Beck, Shrive
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
By isomerization
585475, 585488, 585486, C07C 522
Patent
active
055169562
ABSTRACT:
A mixture of aromatic hydrocarbons, comprising ethylbenzene and at least one xylene, is isomerized using a two component catalyst system to convert the ethylbenzene to compounds that may be removed from the aromatic hydrocarbon stream and to produce a product stream wherein the para-xylene concentration is approximately equal to the equilibrium ratio of the para-isomer. The first catalyst comprises an intermediate pore size zeolite that is effective for ethylbenzene conversion. The first catalyst is preferably silica-bound. The second catalyst comprises an intermediate pore size zeolite, which further has a small crystal size and which is effective to catalyze xylene isomerization. Each of the catalysts of this invention may contain one or more hydrogenation/dehydrogenation component.
REFERENCES:
patent: Re31782 (1984-12-01), Olson et al.
patent: 4090981 (1978-05-01), Rodewald
patent: 4117026 (1978-09-01), Haag et al.
patent: 4163028 (1979-07-01), Tabak et al.
patent: 4312790 (1982-01-01), Butter et al.
patent: 4477583 (1984-10-01), Rodewald
patent: 4560820 (1985-12-01), Field
patent: 4582815 (1986-04-01), Bowes
patent: 4783568 (1988-11-01), Schmidt
patent: 4899011 (1990-02-01), Chu et al.
patent: 4950835 (1990-08-01), Wang et al.
patent: 5053374 (1991-10-01), Absi et al.
patent: 5321183 (1994-06-01), Chang et al.
patent: 5349114 (1994-09-01), Lago et al.
patent: 5365003 (1994-11-01), Chang et al.
patent: 5365004 (1994-11-01), Beck et al.
patent: 5367099 (1994-11-01), Beck et al.
patent: 5371312 (1994-12-01), Lago et al.
patent: 5382737 (1995-01-01), Beck et al.
Abichandani Jeevan S.
Venkat Chaya R.
Beck Shrive
Harris Gerald L.
Keen Malcolm D.
McKillop Alexander J.
Meeks Timothy H.
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