| 摘要 |
FIELD: chemistry.SUBSTANCE: invention refers to zeolite adsorbents. What is presented is zeolite-X having Si/Al molar ratio from 1.0 to 1.5, average diameter of no more than 2.7 micron and relative LTA intensity of no more than 0.35 determined by X-ray diffraction (XRD). The relative LTA intensity is determined as a relation of LTA-XRD-intensity of a zeolite-X sample to the reference XRD-intensity of the reference LTA zeolite multiplied by 100. The intensities are summed up for each LTA peak with the Miller index (200), (420) and (622) at 7.27±0.16°, 16.29±0.34° and 24.27±0.50° 2?.EFFECT: invention provides the high purity of zeolite X and its high selectivity in the process of recovery of para-xylol from alkylaromatic hydrocarbon mixtures.7 cl, 2 dwg, 1 tbl, 8 ex |
