A kind of application method of cobalt-based Fischer-Tropsch synthesis catalyst
An application method, a technology of Tropsch synthesis, applied in the application field of cobalt-based Fischer-Tropsch synthesis catalysts, can solve problems such as low space-time yield, high sensitivity, and limited production and application, and achieve easy realization, simple operation, and improved Fischer-Tropsch synthesis catalysis active effect
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Embodiment 1
[0020] Prepare the cobalt-based catalyst according to the method of Example 7 of patent ZL 201210160020.6: take pseudo-boehmite according to the amount of alumina accounting for 89 (wt)% of the final catalyst, and prepare 4.5mol / L Na at the same time 2 CO 3 solution, the two are mixed to adjust the pH of the pseudo-boehmite slurry to 8.5. Account for 1.0(wt)% of the final catalyst by barium oxide, prepare 1.0mol / L of Ba(NO 3 ) 2 The solution was added dropwise to the pseudo-boehmite lye while stirring with the above lye, kept at 55°C, and the pH at the end point was controlled to be 8.5. After the precipitation was completed, it was statically aged for 5 hours, washed and filtered until there was no impurity. The filter cake was dried at 80°C for 8h, and then calcined at 450°C for 9h to prepare the catalyst carrier. Weigh Co(NO 3 ) 2 ·6H 2 O and PdCl 2 According to the equal-volume impregnation method, measure deionized water, prepare a mixed salt solution and impregnat...
Embodiment 2
[0023] Cobalt-based catalysts were prepared according to the method in Example 5 of patent ZL 201010539363.4: a modified zinc oxide-supported cobalt catalyst was prepared according to the ratio of Co:W:Zn=16:43:39. Prepare 1.0M ethanol solution of zinc nitrate salt, prepare 1.2M aqueous ammonia solution as a precipitant, precipitate zinc salt at pH=7.5, 50°C, wash the filter cake to neutrality, dry at 110°C, and roast at 400°C for 5 After hours, the obtained sample was broken into powders below 200 mesh for use. According to the set ratio, ammonium paratungstate aqueous solution was prepared, tungsten was loaded on the obtained sample by the equal volume method, dried at 115°C, and roasted at 480°C for 2 hours, and the obtained sample was broken into powder below 200 mesh for use. According to the amount of Ni accounting for 7wt%, Cr accounting for 8% and cobalt in the final catalyst, prepare a mixed solution of nickel nitrate, chromium nitrate and cobalt nitrate, adopt the eq...
Embodiment 3
[0026] Prepare the cobalt-based catalyst according to the method of Example 1 of patent ZL 201210050261.5: add 4500g of deionized water to the reactor A, and add 500g of γ-Al after turning on the stirring motor 2 o 3 Mix the powder, add hydrochloric acid and continue mixing until the pH value of the slurry is 5.0. Add 5500g of deionized water to reactor B, and add 500g of γ-Al 2 o 3 powder, after stirring and mixing evenly, mix the slurry in AB two kettles evenly, heat to 80°C and let it stand for 1 hour, continue to stir, add alkaline silica sol, so that the mass ratio of silicon to aluminum is SiO 2 :Al 2 o 3 =20:80, continue to stir and mix evenly. Slowly add the prepared 0.1mol / L zirconium oxychloride solution into the above slurry. The temperature of the slurry is controlled at 25°C. Medium SiO 2 、Al 2 o 3 And 0.5% of the total mass of zirconium oxychloride. The obtained granular powder material was calcined at 650° C. for 6 hours, cooled and cooled for later us...
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