Patent ID: 6114592
Filing Date: 2000-09-05
Classification: C07C,Y02P

Abstract:
A process combination for the disproportionation of a toluene-containing feedstock comprising the sequence of:a. removing unsaturates from the feedstock in a selective unsaturates-removal zone to obtain a stable intermediate; and,b. contacting the intermediate with an oil-dropped spherical disproportionation catalyst comprising a zeolitic aluminosilicate having a pore diameter of from about 5 to 8 .ANG. and an aluminum phosphate binder the catalyst having a X-ray powder diffraction pattern such that the ratio of peak intensities at respective two-.THETA. Bragg angle values of 48.5:46.5 is at least about 1.1 and the ratio of peak intensities at respective two-.THETA. Bragg angle values of 48.5:47.5 is at least about 1.0 in a disproportionation zone at disproportionation conditions to obtain a paraxylene-rich product.