Preparation and properties of carbon-mineral sorbents

An efficient mesoporous carbon-mineral sorbent (CMS) that combines useful properties of a mineral matrix and activated carbon is prepared on the basis of waste products. Carbon is placed on the surface of meso- and macropores of the mineral matrix in the form of clusters with linear sizes in the range 5 - 9 nm, covering 60 % of the initial surface of the mineral. Carbon clusters block active sites of the mineral matrix, and the resulting acidity of CMS is essentially determined by its carbon component. The adsorption ability of CMS is determined both by its acid-base parameters and by its ability to adsorb molecules of organic substances, with the redistribution of the electronic density between the adsorbent and molecules of adsorbate leading to the formation of chemical bonds