A method for preparing synthesis gas by chemical chain partial oxidation of methane
A synthesis gas and chemical chain technology, applied in chemical instruments and methods, iron compounds, inorganic chemistry, etc., can solve the problems of iron-based oxygen carrier selectivity and carbon deposition resistance, and achieve excellent synthesis gas selectivity and oxygen carrying capacity, excellent methane activation performance, and the effect of reducing solubility
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Embodiment 1
[0060] BaSn 0.8 Fe 0.2 o 3-δ Preparation of oxygen carriers
[0061] SnC 2 o 4 Mix with hydrogen peroxide / water solution, fully stir until dissolved, add a certain amount of citric acid and stir to dissolve, the ratio of citric acid to the total amount of Sn ions is 6 / 1, then drop ammonia water to adjust the pH to about 7, and obtain Tin mother liquor; a certain stoichiometric ratio of Ba(NO 3 ) 2 and Fe(NO 3 ) 3 9H 2 0 mix and add deionized water, add citric acid after stirring and dissolving, the ratio of citric acid to the total amount of Ba and Fe cations is 6 / 1, after dissolving, adjust the pH to 5-8 with ammonia water after dissolving; Mix the above two solutions, put them in a water bath at 80°C until a gel is formed, dry in an oven at 150°C overnight to obtain a black precursor, grind the precursor, slowly raise the temperature to 450°C in a muffle furnace, and roast for 4 hours, then grind again Afterwards, bake at 900°C for 4 hours in a high-temperature fur...
Embodiment 2
[0063] BaSn 0.6 Fe 0.4 o 3-δ Preparation of oxygen carriers
[0064] The specific operation is the same as above, the difference is that the amount of tin-containing iron mother liquor added is changed, and the amount of deionized water added is changed at the same time to obtain oxygen carriers with different Sn doping amounts.
Embodiment 3
[0066] BaSn 0.4 Fe 06 o 3-δ Preparation of oxygen carriers
[0067] The specific operation is the same as above, the difference is that the amount of tin-containing iron mother liquor added is changed, and the amount of deionized water added is changed at the same time to obtain oxygen carriers with different Sn doping amounts.
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