Preparation method of phosphoric hydrogenation catalyst for realizing deep desulfurization and denitrification
A hydrogenation catalyst and catalyst technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of weakening the interaction of active components, few new preparation methods, and reducing active components Dispersion and other issues, achieve weak interaction, high dispersion, and overcome the effect of active component agglomeration
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Embodiment 1
[0025] Weigh shaped γ-Al 2 o 3Put 5g of carrier into a 100ml autoclave, add 1.9ml of 0.3mol / l ammonium metatungstate solution, then add 6.8ml of 2.0mol / l nitric acid, stir evenly, then add 0.8mol / l citric acid solution 15.5ml and 4ml of ammonium phosphate solutions with a concentration of 0.52mol / l, closed the reaction vessel, heated up to 190°C, and stirred for 11 hours; cooled to room temperature, opened the reaction vessel, filtered the suspension, washed with water, and obtained solid product at 110 ℃ drying for 2 hours and calcination at 550℃ for 4 hours to obtain phosphorus-containing W / Al 2 o 3 catalyst.
[0026] To the phosphorus-containing W / Al 2 o 3 Add 4ml of nickel salt solution containing 0.7g of nickel nitrate hexahydrate, soak at room temperature for 12 hours, then dry at 110°C for 2 hours, and bake at 550°C for 4 hours to obtain phosphorus-containing NiW / Al 2 o 3 Hydrofining catalyst P1, the mass content and composition of the catalyst are listed in Tabl...
Embodiment 2
[0028] Weigh shaped γ-Al 2 o 3 Put 5g of carrier into a 100ml autoclave, add 23.0ml of 0.3mol / l sodium tungstate solution, then add 5.7ml of 2.4mol / l hydrochloric acid, stir well, add 17.2ml of 0.8mol / l oxalic acid solution and 4ml A phosphoric acid solution with a concentration of 0.61mol / l was heated up to 180°C, stirred for 12 hours, cooled to room temperature, filtered and washed with water, and the obtained solid product was dried at 110°C for 2 hours, and roasted at 550°C for 4 hours to obtain Phosphorus W / Al 2 o 3 catalyst.
[0029] To the phosphorus-containing W / Al 2 o 3 Add 4ml of nickel salt solution containing 0.7g of nickel nitrate hexahydrate into the solution, soak at room temperature for 14 hours, then dry at 110°C for 2 hours, and bake at 550°C for 4 hours to obtain phosphorus-containing NiW / Al 2 o 3 Hydrofining catalyst P2, the mass content and composition of the catalyst are listed in Table 1.
Embodiment 3
[0031] Weigh the molded Al 2 o 3 -SiO 2 Composite carrier (containing SiO 2 The weight percentage is about 10wt%) 5g, put it into a 100ml autoclave, add 0.3mol / l ammonium paratungstate solution 1.7ml, then add 2.4mol / l nitric acid 5.0ml, stir evenly, add 0.8mol / l lemon 13.4ml of acid solution and 5.1ml of ammonium hydrogen phosphate solution with a concentration of 0.61mol / l were heated up to 170°C, stirred and reacted for 16 hours, cooled to room temperature, the suspension was filtered and washed with water, and the obtained solid product was dried at 110°C for 2 Hours, calcination at 550°C for 4 hours to obtain phosphorus-containing W / Al 2 o 3 catalyst.
[0032] To the phosphorus-containing W / Al 2 o 3 Add 4ml of nickel salt solution containing 0.62g of nickel nitrate hexahydrate to the solution, soak at room temperature for 16 hours, then dry at 110°C for 2 hours, and bake at 550°C for 4 hours to obtain phosphorus-containing NiW / Al 2 o 3 Hydrofining catalyst P3, th...
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