Research On Composite Metal Oxide Catalysts And Decomposition Of N₂O

N2O is one of the trace and important greenhouse gas in the atmosphere, which can cause the physical destruction of stratospheric ozone. The commonly used methods for the processing of N2O gas are thermal decomposition method, catalytic decomposition method, the preparation of phenol and cyclohexanol absorption oxidation method, among these mentioned methods the catalytic decomposition is the most significant and popular method. The catalysts reported in the literature for the decomposition of N2O are non-supported metal catalysts, noble metal catalysts, a single metal oxide, composite metal oxide, zeolite and hydro calcite-like catalysts. In this thesis, we are reporting the certain amount of metal oxides doped to Co3O4, and also the decomposition of N2O by catalyst is studied on the Co3O4spinel type catalysts which can form a perovskite structure, by such structural diversity the stability of catalyst is enhanced and the dispersion of the metal ion is improved that consequently improve the catalytic activity to significant level. Different metal oxides were doped to Co304to find out the best metal and to find optimum reaction condition for the catalytic decomposition of N2O. By keeping the catalyst fixed different amounts of metal oxides doped on to CO3O4were studied and concluded that following molar composition of Mg0.4Co2O4showed optimum catalyst activity. XRD, BET, SEM, and TEM techniques were used for the characterization of optimum molar ration (Mg0.4Co2O4) and found that at this molar ratio it has high ratio of surface area and smaller particle size, and conductivity to form more oxygen species was determined by H2-TPR, binding energy was determined by XPS characterization.