A kind of synthetic liquid hydrocarbon cobalt-based catalyst and its preparation method and application
A catalyst and complexing agent technology, which is applied in the field of synthesizing liquid hydrocarbon cobalt-based catalysts and its preparation, can solve the problems of dispersive distribution of liquid hydrocarbon products, high methane selectivity, and excessive carbon chain paraffin components, etc. sexual effect
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Embodiment 1
[0025] Prepare a mixed aqueous solution containing cobalt nitrate and barium nitrate, weigh an appropriate amount of citric acid according to the molar ratio of citric acid to the total amount of metal ions in the mixed aqueous solution is 1.2:1, slowly add citric acid to the mixed aqueous solution, and stir while adding. After stirring for 5 hours, the brown solution had been dehydrated and turned into a viscous gel. The gel was taken out and placed in a drying oven at 110° C. to dry overnight. Then take out the dried precursor, place it in a muffle furnace and roast at a constant temperature of 800 °C for 4 hours to obtain a composite metal oxide BaCoO with a perovskite structure. 3-y , using the impregnation method on the composite metal oxide BaCoO 3-y Loaded with 10% additive potassium and 40% active component cobalt, dried at 80°C for 8 hours, and calcined at 350°C for 4 hours to prepare the catalyst, which is designated as C-1. The evaluation results are shown in Table ...
Embodiment 2
[0027] Prepare a mixed aqueous solution containing calcium nitrate, molybdenum nitrate and barium nitrate, weigh an appropriate amount of citric acid according to the molar ratio of citric acid to the total amount of metal ions in the mixed aqueous solution is 2:1, slowly add citric acid to the mixed aqueous solution, and add While stirring. After stirring for 5 hours, the brown solution had been dehydrated and turned into a viscous gel. The gel was taken out and placed in a drying oven at 110° C. to dry overnight. Then take out the dried precursor, place it in a muffle furnace and roast at a constant temperature of 700 °C for 6 hours to obtain a composite metal oxide CaCo with a perovskite structure. 0.9 Mo 0.1 o 3-y , using the impregnation method on the composite metal oxide CaCo 0.9 Mo 0.1 o 3-y Loaded with 10% potassium by weight and 40% cobalt as an active component, dried at 80°C for 8 hours, and calcined at 350°C for 4 hours to obtain a catalyst, which is designat...
Embodiment 3
[0029] Prepare a mixed aqueous solution containing barium nitrate, cobalt nitrate and molybdenum nitrate, weigh an appropriate amount of citric acid according to the molar ratio of citric acid to the total amount of metal ions in the mixed aqueous solution is 2:1, slowly add citric acid to the mixed aqueous solution, and add While stirring. After stirring for 5 hours, the brown solution had been dehydrated and turned into a viscous gel. The gel was taken out and placed in a drying oven at 110° C. to dry overnight. Then take out the dried precursor, place it in a muffle furnace and roast at a constant temperature of 700 °C for 6 hours to obtain a composite metal oxide BaCo with a perovskite structure. 0.9 Mo 0.1 o 3-y , using the impregnation method on the composite metal oxide BaCo 0.9 Mo 0.1 o 3-y Loaded with 10% potassium by weight and 40% cobalt as the active component, dried at 80°C for 8 hours, and calcined at 350°C for 4 hours to prepare the catalyst, which is desig...
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