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Effects of carbon dioxide on methane recombination


Carbon dioxide, is an inorganic substance, at room temperature is a colorless odorless gas, slightly more dense than air, soluble in water, chemical formula is CO? One of the carbon oxides. Carbon dioxide gas can be used in many ways, such as fire extinguishing, refrigerant, artificial rainfall, industrial raw materials, storage food, raw materials for plant photosynthesis, dry cleaning, gas fertilizer and reaction catalysis with other chemicals. High purity carbon dioxide gas has an excellent performance in the recombination of methane.


For use of cu/ni alloy catalyst for catalytic carbon dioxide restructuring of methane, the reaction gas and adsorbed on the surface of the catalyst behavior, is worth further study, this paper mainly in the vacuum system, using hydrogen, carbon monoxide, carbon dioxide and methane adsorption on the different proportion of copper and nickel catalyst powder, observation of gas adsorption quantity changes, hope to be able to understand the different proportions of cu/ni catalyst for its adsorption amount involved in the reorganization of the reaction gas. Ft-ir was used to observe the spectra of these gases adsorbed on the cu-Ni catalyst, and the influence of the morphology of the reconstituted gases on the reaction behavior was discussed. By the experimental results of nickel catalyst with only a small amount of copper, will greatly change the surface of the catalyst composition, and from the FTIR spectrum found co adsorption on the catalyst surface atop and bridge - the location of the bonded carbon dioxide will form bicarbonate and bidentate carbonate of two different structure, as to carbon dioxide and methane adsorption experiments can know copper nickel catalyst is the best reduction temperature at 600 ℃.


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