Effect of the conditions of structure formation on the physicochemical properties of ozonated shungites

Detection and Neutralization of Unsymmetrical Dimethylhydrazine on the Surface of Construction Materials

“…The adsorption and catalytic properties of shungite can be enhanced by its mechanochemical and thermal oxidative modification and by doping with transition metal salts [11,21]. According to [15,16], low-temperature ozonation of shungite leads to an increase in its specific surface area, pore volume, and number of oxygen-containing surface compounds and to the appearance of micropores, resulting in increased adsorption and catalytic activity of this mineral [17]. On the other hand, ozonation of shungite already contaminated with UDMH will accelerate the oxidation of toxic compounds and lead to environmentally safe sorbent regeneration.…”

“…Only 5% of UDMH undergoes deep oxidation to CO 2 , nitrogen, and water during liquid-phase ozonolysis [14]. To enhance its destruction, heterophase ozonolysis of UDMH preliminarily sorbed on Al 2 O 3 was proposed [15].…”

“…Unlike other carbon sorbents, shungite is capable of catalytically decomposing UDMH [10]. It can hardly be oxidized with ozone, and there are no noticeable changes in the structure of shungite carbon as a result of low-temperature ozonation [15]. The nonsteady-state character of the vibrational kinetics of shungite ozonation and the absence of CO 2 in reaction products are the distinctions of shungite from the majority of carbon materials [16].…”