Process for para selective alkylation of aromatic hydrocarbons

Details Process for para selective alkylation of aromatic hydrocarbons Process for para selective alkylation of aromatic hydrocarbons

1983-12-19

1986-07-08

Davis, Curtis R.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire molecules or entire hydrocarbyl...

C07C 268

Patent

active

045994730

ABSTRACT:
A process for the selective alkylation of monoalkylbenzene into dialkylbenzenes wherein the para isomer of the disubstituted product is present in a concentration greater than in a thermodynamic equilibrium is provided.
The method comprises passing the monoalkylbenzene and an alkylating agent capable of methylation, ethylation or propylation through a reaction zone containing an unmodified crystalline silica catalyst of the silicalite type having the monoclinic symmetry.

REFERENCES:
patent: 4368114 (1983-01-01), Chester et al.
patent: 4370508 (1983-01-01), Kaeding
patent: 4387260 (1983-06-01), Watson et al.
Wu et al, The Journal of Physical Chemistry, vol. 83, No. 21, 1979, pp. 2777-2781.

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