Carbon dioxide, is a kind of inorganic substance, at room temperature is a colorless and odorless gas, density is slightly larger than air, soluble in water, chemical formula for CO? One of the carbon oxides. Carbon dioxide gas can be used in many aspects, such as fire fighting, refrigerant, artificial rain, industrial raw materials, food storage, plant photosynthesis raw materials, dry cleaning, as a gas fertilizer and catalytic reaction with other chemicals. High purity carbon dioxide gas has excellent performance in the recombination of methane. Next, the small editor of Nuredett gas will introduce the use of copper/nickel alloy catalyst to catalyze the recombination of carbon dioxide and methane.

For the reaction of carbon dioxide recombination methane catalyzed by copper/nickel alloy catalyst, the adsorption behavior of reaction gas and catalyst surface is quite worthy of in-depth study. In this paper, hydrogen, carbon monoxide, carbon dioxide and methane are adsorbed on different proportions of copper-nickel catalyst powder under vacuum system, and the changes of gas adsorption amount are observed. It is hoped to understand the effect of different proportions of copper/nickel catalysts on the adsorption capacity of gas involved in the recombination reaction. FT-IR was used to observe the spectra of these gases adsorbed on the copper-nickel catalyst, and the influence of the morphology of the recombinant gas on the catalyst surface on the reaction behavior was discussed. According to the experimental results, as long as a small amount of copper is added to nickel catalyst, the surface composition of the catalyst will greatly change. However, it is found from FTIR spectrum that carbon monoxide is attached to the position of atop and bridge-bonded on the surface of the catalyst. Carbon dioxide forms two different structures with bicarbonate and bidentate carbonate. As for the co-adsorption experiments of carbon dioxide and methane, it can be seen that the optimal reduction temperature of the catalyst is 600℃.