Catalysts based on carbon material "Sibunit" for the deep oxidation of organic toxicants in water solutions. Aerobic oxidation of phenol in the presence of oxidized carbon and Ru/C catalysts
The authors conducted a systematic study of carbon material series «Sibunit» (S4) prospective for the processes of oxidative treatment of industrial waste. The effect of the conditions of oxidative treatment of «Sibunit» (S4) on the chemical composition of its surface and catalytic properties in the deep oxidation of organic toxicants in aqueous solutions was investigated. The influence of the chemical composition of the surface of oxidized under different conditions of the carbon material S4 on its catalytic properties in the liquid-phase aerobic oxidation of phenol, and the catalytic properties of ruthenium catalysts (3 wt.% Ru), prepared on samples of oxidized carbon support S4. Active carbon samples in the oxidation of phenol was detected and it increases with the number of carbonyl and phenolic groups on the carbon surface and decreases with the number of carboxyl and lactone groups. However, the activity of carbon samples noticeably inferior Ru-containing catalysts. The optimal method of pretreatment carbon support to produce the most stable and active Ru/Sibunit catalyst for liquid-phase oxidation of oxygen compounds of the class of phenols is chosen.