Аңдатпа
New type of catalytic system based on macroporous amphoteric cryogel was synthesized by free radical polymerization of methacrylic acid (MAA) and (N'N'-dimethylaminoethylmethacrylate (DMAEM) in cryoconditions. The amphoteric cryogel was modified by gold nanoparticles (AuNPs) heating of cryogel in aqueous solution of tetrachloroauric acid, as a result the initial white cryogel was discolored in red. Morphology of DMAEM-co-MAA/AuNPs was evaluated by scanning electron microscopy (SEM). The MAA-co-DMAEM/AuNPs-was used as a flow-through catalytic reactor in re-duction of 4-nitrophenol (4-NP) by sodium boronhydride and in oxidation of dithiotreitol (DTT) by hydrogen peroxide. The catalytic activity of MAA-co-DMAEM/AuNPs was stable and preserved no less than 10 catalytic cycles. The rate constants, activation energies, and thermodynamic parameters of oxidation and reduction reactions were calculated.