Abstract
Introduction. Perovskite type catalysts are becoming more and more relevant due to their stability to high temperature and sintering in the process of obtaining synthesis gas. Modification of perovskite catalysts with cerium can improve oxygen mobility and intensity of interaction with active metal particles. The purpose of this work is to study the activity of perovskite type catalysts LaNiO3 and La0.9Ce0.1NiO3 in the process of carbon dioxide conversion from methane to synthesis gas. Methodology. The catalyst was synthesized by the Pechini method, studied using the X-ray phase method and chromatographic analysis. Results of work. Catalyst La0.9Ce0.1NiO3 prepared by Pechini method can provide almost complete conversion of methane and carbon dioxide gas at the reaction temperature of 850°C (XCH4 98%, XCO2 93.6%). X-ray phase analysis shows that the synthesized LaNiO3 and La0.9Ce0.1NiO3 are oxide catalysts of the perovskite type, and have a typical structure of perovskites, forming phases LaNiO3 and CeO2. Conclusion. Studies have shown that varying the temperature of the reaction makes it possible to purposefully control the reaction in the direction of obtaining synthesis gas with a given ratio, to obtain valuable products such as acetic acid, acetic anhydride and ethylene glycol.
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