Binder converted aluminosilicate x type zeolite compositions with low lta type zeolite

摘要

A zeolitic binder converted composition comprising (a) a zeolite X composition having at least a first zeolite X having a mean diameter not greater than 2.7 microns and a second zeolite X wherein the second zeolite X is obtained by converting a binder material to the second zeolite X and the binder material is in a range from 5 to 50 wt% of the zeolite X composition; and (b) an unconverted binder material content after conversion to the second zeolite X is complete in a range from 0 to 3 wt% of the zeolite X composition. The zeolite X composition has an average Si/Al framework mole ratio in a range from 1.0 to 1.5 and a relative LTA intensity not greater than 1.0 as determined by x ray diffraction (XRD). The zeolitic binder converted composition is useful in a process for separating para xylene from a mixture of C alkylaromatics.