Conventional processes of ammonia oxidation have been utilizing the precious metal catalysts such as platinum, rhodium and palladium. In this study, however, base metal oxides were employed as the catalysts for the production of nitric oxide. In particular, cobalt oxide, ferric oxide-bismuth oxide, and three-components mixed oxide such as Co-Al-Ca, Fe-Al-Ca and Ni-Ba-Ti were prepared in the laboratory and the optimum reaction conditions were determined. The effect of exothermic reaction in the catalyst bed was made negligible by introducing reactant gases in the form of small pulses along with helium to the micro-reactor system connected to the gas chromatograph. Quantitative analysis of product gases were carried out by using Porapak Q, molecular sieve 5A and activated charcoal as column materials for the gas chromatography. It was observed that the base metal oxide catalysts lowered the temperature range for the maximum yield of nitric oxide and nitrogen dioxide by 150 to 200 ℃ in comparison to the case of precious metal catalysts. The mechanical strength as well as the catalyst life were found to be sufficient for industrial applications.