Xylene isomerization process using UZM-5 and UZM-6 zeolites

A process for the isomerization of a non-equilibrium feed mixture comprising xylenes and ethylbenzene comprising contacting the feed mixture in the presence of hydrogen in an isomerization zone with a catalyst composite comprising an effective amount of at least one platinum-group metal component and a crystalline aluminosilicate zeolite at isomerization conditions to obtain an isomerized product comprising a higher proportion of p-xylene than in the feed mixture, the zeolite characterized in that it is a microporous crystalline zeolite having a composition in the as synthesized form on an anhydrous basis in terms of mole ratios of the elements of:

• Mmn+Rrp+Al(1−x)ExSiyOz
• where M is at least one exchangeable cation selected from the group consisting of alkali and alkaline earth metals, “m” is the mole ratio of M to (Al+E) and varies from about 0 to about 1.2, R is a nitrogen-containing organic cation selected from the group consisting of protonated amines, protonated diamines, protonated alkanolamines, quaternary ammonium ions, diquaternaryammonium ions, quaternized alkanolamines and mixtures thereof, “r” is the mole ratio of R to (Al+E) and has a value of about 0.25 to about 3.0, E is at least one element selected from the group consisting of Ga, Fe, Cr, In and B, “X” is the mole fraction of E and varies from 0 to 0.5, “n” is the weighted average valence of M and has a value of about +1 to about +2, “p” is the weighted average valence of R and has a value of +1 to about +2, “y” is the mole ratio of Si to (Al+E) and varies from about 5 to about 12 and “z” is the mole ratio of O to (Al+E) and has a value determined by the equation:
• z=(m·n+r·p+3+4·y)/2
• the material characterized in that it has at least two x-ray diffraction peaks, one at a d-spacing of 3.9±0.12 Å and one at 8.6±0.20 Å.