PREPARATION AND PROPERTIES OF CARBON-MINERAL SORBENTS

An efficient mesoporous carbon-mineral sorbent (CMS) that combines use ful 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 lin ear sizes in the range 5 - 9 nm, covering 60% of the initial surface o f the mineral. Carbon clusters block active sites of the mineral matri x, and the resulting acidity of CMS is essentially determined by its c arbon component. The adsorption ability of CMS is determined both by i ts acid-base parameters and by its ability to adsorb molecules of orga nic substances, with the redistribution of the electronic density betw een the adsorbent and molecules of adsorbate leading to the formation of chemical bonds.