METHOD OF CENTRIFUGAL POROSIMETRY Russian patent published in 2014 - IPC G01N9/00 

FIELD: chemistry.

SUBSTANCE: substance of an invention consists in the application of three successive cycles of taking curves of liquid extrusion from a sample in a method of centrifugal porosimetry with three values of the sample thickness. The first porogram is taken for an experimentally selected width of the sample d₁, at which after the complete cycle of centrifuging a non-displaced from the sample volume of liquid V_rem. remains. The second porogram is taken after reduction of the sample thickness to values d₂=d₁(V₀-V_rem)/ V₀ (where V₀ is the total volume of pores). The third porogram is taken for the thickness of the sample d₃=d₂/2. For each program a differential curve of pore radii distribution is obtained.

EFFECT: positions of maximums of all three differential curves of the pore radii distribution give the more exact picture of a real spectrum of pores of the analysed object.

1 tbl, 2 dwg