ALUMOSILICATE ZEOLITE COMPOSITIONS OF X TYPE WITH LOW CONTENT OF TYPE LTA ZEOLITE, INCLUDING CONVERTED BINDING AGENT

摘要

FIELD: chemistry.;SUBSTANCE: zeolite composition with converted binding agent includes a) zeolite X composition, which includes first zeolite X with the average particle diameter not more than 2.7 micron and second zeolite X, with second zeolite X being obtained as a result of conversion of binding material into second zeolite X, with content of binding materials being from 5 to 30 wt % counted per zeolite X composition, and b) quantity of non-converted binding agent after completion of its conversion into second zeolite X from 0 to 3 wt %, counted per zeolite X composition, where zeolite X composition has the average molar ratio Si/Al in framework from 1.0 to 1.5, and molar ratios Si/Al in framework of first zeolite and second zeolite can be similar or different, with relative intensity of zeolite LTA not higher than 1.0 when measured by method of X-ray diffraction (XRD). Zeolite composition with converted binding material can be used in the process of paraxylene isolation from mixture of C8-alkylaromatic compounds.;EFFECT: obtaining zeolite composition with improved properties.;10 cl, 2 dwg, 1 tbl, 4 ex