ALUMOSILICATE ZEOLITE COMPOSITIONS OF X TYPE WITH LOW CONTENT OF TYPE LTA ZEOLITE, INCLUDING CONVERTED BINDING AGENT Russian patent published in 2015 - IPC C01B39/22 B01J20/18 C07C15/08 

Abstract RU 2544673 C1

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

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RU 2 544 673 C1

Authors

Kherst Dzhehk E.

Chehn Linda S.

Brouch Robert U.

Dates

2015-03-20Published

2012-04-05Filed