Patent ID: 6320087
Filing Date: 2001-11-20
Classification: B01D,B01J,C07C

Abstract:
A method for separating an isomer from mixed halogenated aromatic isomers, which comprises processing said isomer to provide a mixture having a dissolved oxygen content of at most 15 ppm by weight,contacting an adsorbent formed by kneading a zeolite powder with water; extruding the resultant paste into pellets; and rounding said pellets to form absorbent particles havinga) porosity of from 0.20 cc/cc to 0.37 cc/cc;b) packing density of from 0.50 g/ml to 0.70 g/ml; andc) grain size of from 0.1 mm to 1.0 mm;with said mixture of halogenated aromatic compound isomers having to thereby separate at least one said halogenated aromatic isomer from said mixture.