Abstract
The thermal degradation of a mixture of lignin with washed-off petroleum waste in the presence of 2% Cu(Ac)2 was studied. The ion-exchange interaction of the copper cation with the oxygen-containing acidic groups of mixture components occurred upon mixing the components. On a supramolecular level, this was accompanied by the compaction of carbon layers in a crystallite and a considerable increase in its diameter. In the course of the nonisothermal heating of a mixture with a copper acetate additive over the range 20–950°C, the temperature of the onset of the main thermal degradation decreased by 30 K and the rate of degradation decreased in this region. The single-step steam activation (800°C, 0.5 h) of the mixture with Cu(Ac)2 added allowed us to obtain active carbon with high yield, adsorption capacity for iodine, and micropore volume, as compared with active carbon prepared from the mixture with no additive.
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