Chemistry of hydrocarbon compounds – Plural serial diverse syntheses – To produce aromatic
Patent
1991-11-22
1995-12-19
Pal, Asok
Chemistry of hydrocarbon compounds
Plural serial diverse syntheses
To produce aromatic
585467, C07C 266
Patent
active
054769787
ABSTRACT:
Ethyl benzene is produced in a catalyst bed under 0.25 to 50 atmospheres of pressure and at temperatures in the range of 50.degree. C. to 300.degree. C., using as the catalyst a mole sieve characterized as acidic by feeding ethylene to the catalyst bed while benzene is conveniently added through the reflux to result in a molar excess present in the reactor to that required to react with ethylene, thereby reacting substantially all of the ethylene and recovering benzene as the principal overhead and ethyl benzene and diethyl benzene in the bottoms. The bottoms are fractionated, the ethyl benzene recovered and the bottoms are contacted with benzene in the liquid phase in a fixed bed straight pass reactor under conditions to transalkylate the benzene thereby converting most of the diethyl benzene to ethyl benzene which is again separated and recovered.
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Arganbright Robert P.
Hearn Dennis
Smith, Jr. Lawrence A.
Chemical Research & Licensing Company
Griffin Walter D.
Johnson Kenneth H.
Pal Asok
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