| Abstract [eng] |
In this work three catalysts, which used calcined hydrotalcite as a support were studied. Two catalysts, with CuO and CuO–CeO2 active components, were prepared by hydrothermal synthesis method from mechanically mixed hydrotalcite precursors with Cu(NO3)2•3H2O and Ce(NO3)3•6H2O. Third catalyst was prepared using impregnation method from calcinated hydrotalcite and Cu(NO3)2•3H2O solution. In the first chapter of this work volatile organic compounds, their abatement methods, catalysts used for catalytic oxidation and properties of hydrotalcite were reviewed. In the second chapter results of catalysts in methanol catalytic oxidation were evaluated. From the results it is seen, that a catalyst with CuO and CuO–CeO2 active components was superior to a catalyst prepared by the same technic, but with only CuO component. Also, it was concluded that calcined hydrotalcite is suitable for using it as a catalyst support. Using experimental data technological recommendations and technological scheme for methanol neutralization in the air were suggested. Extra energy required for air heating, depending on methanol concentration in the air, was calculated. |
