METHOD OF OBTAINING HIGH-PHASE PURITY GRANULAR NaX ZEOLITE WITHOUT BINDER Russian patent published in 2010 - IPC C01B39/20 

FIELD: chemistry.

SUBSTANCE: invention relates to obtaining granular NaX zeolite. The method involves mixing kaolin and silicon dioxide until achieving molar ratio SiO₂:Al₂O₃=(2,4-3,2):1 and adding powdered NaX zeolite to the mixture until achieving the following content of initial components in the mixture, wt %: powdered NaX zeolite 50-70, silicon dioxide (white soot) 2-5, kaolin - the rest, moistening the mixture until obtaining a homogeneous mass, moulding granules, thermal activation and hydrothermal crystallisation in a sodium silicate solution from a reaction mixture of the following composition: (2.0-2.6)Na₂O·Al₂O₃·(3.0-3.5)SiO₂·(60-80)H₂O, washing and drying the granules.

EFFECT: obtained NaX zeolite which does not contain binder material has high phase purity, dynamic adsorption capacity and mechanical strength, the adsorbent is efficient in natural gas drying and desulphuration processes.

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