Cobalt-based Fischer-Tropsch synthesis catalyst supported by spherical carrier and preparation method thereof
A cobalt-based catalyst, spherical carrier technology, applied in chemical instruments and methods, preparation of liquid hydrocarbon mixtures, catalysts for physical/chemical processes, etc., can solve problems such as poor reaction performance and stability, and reduced catalytic activity of catalysts
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Embodiment 1
[0042] 37.5 grams of aluminum nitrate and 42.9 grams of zirconium nitrate were dissolved in an appropriate amount of deionized water under stirring, and after stirring evenly, they were prepared into a mixed solution with a total concentration of 0.2 mol / liter to obtain the first solution. Dissolve 50 ml of concentrated ammonia water in an appropriate amount of deionized water to obtain a solution of 1 mol / liter, namely the second solution. Under the condition of 60°C, the above-mentioned first solution and the second solution were mixed in parallel under stirring conditions, and the pH value after mixing was kept at 9 to carry out co-precipitation; after the precipitation was completed, it was aged for 4 hours to obtain The precipitated slurry containing zirconium and aluminum, the precipitated slurry is filtered, the solid is washed with deionized water to neutrality, and then added to deionized water for re-beating to obtain a slurry with a solid content of 10%, which is spr...
Embodiment 2
[0044] Dissolve 20.4 g of aluminum isopropoxide and 26.7 g of zirconyl nitrate in deionized water under stirring, and then prepare a mixed solution with a concentration of 0.2 mol / liter to obtain the first solution. Dissolve 21.2 g of sodium carbonate in an appropriate amount of deionized water to prepare a 0.5 mol / liter solution to obtain the second solution. Under the condition of 50°C, the above-mentioned first solution and the second solution were mixed in parallel under stirring conditions, and the pH after mixing was kept at 8, so as to carry out the co-precipitation reaction; after the precipitation was completed, it was left to age for 5 hours to obtain The precipitated slurry containing zirconium and aluminum is filtered, the solid is washed with deionized water to neutrality, and then it is added into deionized water to make a slurry with a solid content of 15%. The zirconium-aluminum oxide spherical carrier precursor was prepared by the spray-drying molding method d...
Embodiment 3
[0046] 37.5 grams of aluminum sulfate and 20.4 grams of zirconium isopropoxide were dissolved in deionized water under stirring, and after uniform stirring, they were prepared into a mixed solution with a concentration of 0.2 mol / liter to obtain the first solution. Dissolve 40 grams of sodium hydroxide in an appropriate amount of deionized water to prepare a solution of 0.5 mol / liter to obtain the second solution. Under the condition of 40°C, the above first solution and the second solution were mixed in parallel under stirring conditions, and the pH after mixing was kept at 10, so as to carry out the co-precipitation reaction; after the precipitation was completed, it was aged for 6 hours to obtain The precipitated slurry containing zirconium and aluminum is filtered, the solid is washed with deionized water to neutrality, and then it is added into deionized water to make a slurry with a solid content of 12%. The zirconium-aluminum oxide spherical carrier precursor was prepar...
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