Preparation method of hydrofining catalyst composition
A technology for hydrorefining and catalysts, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc. The problem of low density of active centers, etc., can improve the performance of ultra-deep hydrodesulfurization, improve the interaction, and increase the density of active sites.
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Embodiment 1
[0039] Dissolve nickel chloride and aluminum chloride solutions in clean water respectively, add polyethylene glycol with a molecular weight of 6000 that accounts for 25wt% of nickel and aluminum in the solution based on the weight of nickel oxide and aluminum oxide, and prepare mixed solution A, mixed solution The weight concentration of NiO in A is 19g / L, Al 2 o 3 The weight concentration is 13g / L. Dissolve ammonium metatungstate, ammonium molybdate and aluminum chloride solution in clean water respectively to prepare mixed solution B, and in mixed solution B, WO 3 The weight concentration is 39g / L, MoO 3 The weight concentration is 16g / L, Al 2 o 3 The weight concentration is 13g / L. The temperature of the solution in reaction tank 1 was raised to 40°C, and ammonia water with a concentration of 25wt% was added to solution A until a dark blue solution was formed. 7.8, to obtain the precipitate slurry I containing nickel and aluminum. Add 1000mL of clean water into the r...
Embodiment 2
[0041]According to the method of embodiment 1, press the component content ratio of catalyst composition B in table 1, add nickel nitrate, aluminum nitrate, zirconium oxychloride solution in dissolving tank 1, add nickel and aluminum in the solution to oxidize 15wt% polyvinyl alcohol with a molecular weight of 18,000 based on the weight of nickel and aluminum oxide was uniformly stirred to form solution A. Add aluminum nitrate, ammonium metatungstate and ammonium molybdate into the dissolution tank 2 to prepare working solution B. The temperature of the solution in reaction tank 1 was raised to 50°C, and ammonia water with a concentration of 20wt% was added to solution A until a dark blue solution was formed. 8.2, Obtain the precipitate slurry I containing nickel and aluminum. Add 1000mL of clean water into the reaction tank 2, add ammonia water with a concentration of 8 wt% and solution B into the reaction tank 2 in parallel, keep the gelling temperature at 55°C, and control...
Embodiment 3
[0043] According to the method of embodiment 1, press the component content proportioning ratio of catalyst composition C in table 1, add nickel chloride, aluminum chloride, phosphoric acid solution in dissolving tank 1, add nickel and aluminum in the solution with nickel oxide Mix polyvinyl alcohol with a molecular weight of 14000 and 40wt% by weight of alumina, stir evenly and configure solution A, add aluminum chloride, ammonium metatungstate and ammonium molybdate to the dissolution tank 2 to prepare working solution B. The temperature of the solution in reaction tank 1 was raised to 55°C, and ammonia water with a concentration of 18wt% was added to solution A until a dark blue solution was formed. 8.0, the precipitate slurry I containing nickel and aluminum was obtained. Add 1000mL of clean water into the reaction tank, add ammonia water with a concentration of 12 wt % and solution B into the reaction tank concurrently, keep the gelling temperature at 50°C, and control th...
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