암모니아의 공기산화에 의한 질소산화물의 공업적제법에는 주로 백금계 귀금속촉매를 사용하고 있으나 본실험에서는 비금속산화물촉매에 의한 질소산화물의 제조공정에 대하여 연구하였다. 촉매로서는 코발트산화물, 철일창연산화물 및 Co-Al-Ca, Fe-Al-Ca, Ni-Ba-Ti 과 같은 삼원계산화물을 사용하였다. 촉매제조의 소성조건을 찾기 위하여 열분석장치를 이용하였고 생성물질의 확인에는 기체크로마토그라프, 적외선분광분척기 및 고차도함수흡광분석기를 이용하였다. 일정한 반응에서 촉매의 성능을 조사하기 위하여 미분형반응기（Micor Reactor）를 사용하였고 공업용촉매로서의 가능성을 조사하기 위하여 pellet형의 촉매를 제조하고 장시간 연속반응시켜 보았다. 비금속산화물촉매는 귀금속촉매보다 저온에서 질소산화물의 수율이 좋으며 삼원계촉매는 공업용촉매로서 가능성이 있음이 입증되었다.

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.