Adsorption deformation of AUK microporous carbon adsorbent at adsorption of n-heptane

Isotherms of relative linear adsorption deformation are measured on an AUK microporous carbon adsorbent for adsorption of @n-heptane in the pressure range of from 1 Pa to 5 kPa and the temperatures of 273, 293, 313, 353, and 393 K. The curves of adsorption deformation behave in a similar way in the whole range of studied temperatures: the adsorbent is practically not deformed in the range of small and medium fillings and its drastic expansion is observed in the range of high fillings. Numeric simulation of n-heptane adsorption in AUK pores is carried out using the model of slit-shaped pores equivalent to porosity parameters determined on the basis of the Dubinin’s bulk micropore filling theory for AUK. The relationship has been established between adsorption deformation of the adsorbent and adsorbate structure variation in micropores.