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Standardowe dane adsorbcji azotu do charakterystyki porowatych adsorbentów mineralnych

Choma J., Zdenkowski A.

Ochrona Środowiska

2000

nr 4

3-7

Nitrogen adsorption isotherms at 77 K measured in the relative pressure range form 8x10[-6] to 0.98 for three mineral adsorbents (from Dunino near Legnica in Poland) with chemically and thermally modified surface properties and comparatively low specific surface areas are presented in a tabulated form and analyzed. An accurate measurement of these isotherms in a wide pressure range for properly prepared mineral adsorbents allows for using them as the standard nitrogen adsorption data. These data can be utilized to evaluate the micropore volume, mesopore surface area and total specific surface area, as well as the surface properties of porous mineral adsorbents, by using one of the comparative plots, i.e., the [alfa]s-plot or the t-plot.