Method of producing valuable alkylated aromatic hydrocarbons fro

Details Method of producing valuable alkylated aromatic hydrocarbons fro Method of producing valuable alkylated aromatic hydrocarbons fro

1977-04-08

1978-09-26

Davis, C.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260672T, C07C 362

Patent

active

041170202

ABSTRACT:
Valuable alkylated aromatic hydrocarbons are produced from a tar comprising that fraction of an alkylation reaction product distilling above about 240.degree. C by a method comprising contacting the tar with benzene and/or toluene in the presence of a catalytic amount of a crystalline aluminosilicate molecular sieve catalyst. For example, tar obtained from the alkylation product resulting from alkylating benzene with ethylene in the presence of aluminum chloride, the tar comprising that fraction of the alkylation reaction product distilling above about 240.degree. C, is converted to a reaction product comprising valuable mono- and diethylbenzene by contacting the tar with benzene in the presence of a catalytic amount of a rare earth exchange zeolite Y molecular sieve at a temperature of at least about 240.degree. C and at a pressure of at least about 200 psi.

REFERENCES:
patent: 3410921 (1968-11-01), Pollitzer
patent: 3555103 (1971-01-01), Strohmeyer
patent: 3763259 (1973-10-01), Hervert

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