Alkylation of organic aromatic compounds

Patent · Sat Dec 31 23:00:00 EST 1988

OSTI ID:867046

Aromatic compounds are alkylated in a catalytic distillation, wherein the catalyst structure also serves as a distillation component by contacting the aromatic compound with a C.sub.2 to C.sub.10 olefin in the catalyst bed under 0.25 to 50 atmospheres of pressure and at temperatures in the range of 80.degree. C. to 500.degree. C., using as the catalyst a mole sieve characterized as acidic or an acidic cation exchange resin. For example, ethyl benzene is produced by feeding ethylene below the catalyst bed while benzene is conveniently added through the reflux in molar excess to that required to react with ethylene, thereby reacting substantially all of the ethylene and recovering benzene as the principal overhead and ethyl benzene in the bottoms.

• Research Organization: CR & L/NEOCHEM JOINT VENTURE
• DOE Contract Number: FC07-80CS40454
• Assignee: Chemical Research & Licensing Company (Houston, TX)
• Patent Number(s): US 4849569
• OSTI ID: 867046
• Country of Publication: United States
• Language: English

Related Subjects

/585/203/999/
10
25
50
500
80
acidic
acidic cation
added
alkylated
alkylation
aromatic
aromatic compound
aromatic compounds
atmospheres
bed
below
benzene
bottoms
catalyst
catalyst bed
catalyst structure
catalytic
catalytic distillation
cation
cation exchange
characterized
component
compound
compounds
contacting
conveniently
conveniently added
degree
distillation
distillation component
ethyl
ethyl benzene
ethylene
example
excess
exchange
exchange resin
feeding
feeding ethylene
molar
molar excess
mole
mole sieve
olefin
organic
organic aromatic
overhead
pressure
principal
principal overhead
produced
range
react
reacting
reacting substantially
recovering
recovering benzene
reflux
required
resin
serves
sieve
sieve characterized
structure
substantially
temperatures