Adsorption of Carbon Dioxide onto Model Carbon Structures with Slitlike Micropores

V. Yu. Yakovleva, b, **, A. V. Shkolina, *, A. A. Fomkina, V. N. Gorelikovc, ***, and I. E. Men’shchikova

a Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow, 119071 Russia

b Nuclear Safety Institute, Russian Academy of Science, Moscow, 115191 Russia

c State Scientific Center “Keldysh Research Center”, Moscow, 125438 Russia

Correspondence to: *e-mail: shkolin@bk.ru
Correspondence to: **e-mail: y_vladislav@mail.ru
Correspondence to: ***e-mail: mn264@yandex.ru

Received 6 April, 2021

Abstract—Carbon dioxide adsorption onto model supramolecular structures with slitlike micropores was calculated based on the Dubinin theory of volume filling of micropores using the linearity property of isosteres. Models of carbon adsorbents with slitlike micropores with a width ranging from 0.5 to 2.5 nm obtained by successively eliminating one, two, etc., up to seven layers of hexagonal carbon in the crystal lattice of graphite were used in calculations. The integral energy of adsorption was calculated for the model structures and commercial carbon adsorbents. The dependence of the gravimetric density of carbon dioxide on temperature and pressure was found.

Keywords: adsorption, carbon dioxide, model adsorbents, porous structure, biofuel, biodiesel, theory of volume filling of micropores, micropores, farm

DOI: 10.1134/S2070205121060204