ADSORBENT FOR DRYING GASES Russian patent published in 2014 - IPC B01D53/26 

FIELD: chemistry.

SUBSTANCE: adsorbent for drying gases has a porous matrix and, in the pores of the matrix, an active water-absorbing substance from a group of sodium or potassium hydrophosphates or dihydrophosphates with particle size of 1-10 nm in amount of 40-100 wt % with respect to the dry substance of the matrix. The porous matrix used is mesoporous silicates from the group of silicate MCM-41, aluminosilicate, zirconosilicate or titanosilicate with mesopore size of 2-50 nm and overall mesopore volume of not less than 1-2 cm³/g, obtained via sol-gel synthesis or template synthesis. The sodium or potassium hydrophosphates of dihydrophosphates are added by impregnation from a 1 M aqueous solution, followed by drying the adsorbent on air at 100°C for 2 hours. After saturation with water, the adsorbent retains the texture of dry granular material.

EFFECT: invention increases water capacity.

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