Preparation method of catalyst for hydrogenation desulfurization and denitrification of light-weight oil
A denitrification catalyst, hydrodesulfurization technology, applied in the direction of catalyst carrier, chemical instrument and method, physical/chemical process catalyst, etc., can solve the problems of increasing production cost, enlargement, etc., and achieve high mechanical strength and good denitrification effect , the effect of moderate acidity on the surface
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Embodiment 1
[0027] 240g of a macroporous aluminum hydroxide dry rubber powder, the alumina content of which is 70%, is mixed with 6g of scallop powder, 9g of 66% concentrated nitric acid and 10g of oxalic acid, added deionized water, kneaded and mixed in a kneader, Afterwards, the strips are extruded by an extruder to obtain clover strips with a diameter of 1.5 mm. After drying in an oven at 120°C for 12 hours and calcining in a muffle furnace at 500°C for 4 hours, carrier Z-A was obtained, and its properties are shown in Table 1.
[0028] At room temperature, add 42g of ammonium metatungstate hexahydrate, 25g of ammonium heptamolybdate tetrahydrate, 37g of nickel nitrate hexahydrate and 4g of ethylene glycol into 120mL of deionized water, stir evenly, and after they are completely dissolved, set the volume to 200mL to obtain The first step is to co-immerse the solution and put it aside for later use. Take 120 g of the carrier strips prepared in the previous step in the dipping tank, add...
Embodiment 2
[0031] 240g of a macroporous aluminum hydroxide dry rubber powder, the alumina content of which is 70%, is mixed with 23g of metatitanic acid, 6g of scallop powder, 9g of 66% concentrated nitric acid and 10g of oxalic acid, added deionized water, and mixed in a kneader Knead and mix in middle, and then extrude and shape through extruder to obtain four-leaf clover strips with a diameter of 1.5mm. Dry in an oven at 120°C for 12 hours, and bake in a muffle furnace at 550°C for 4 hours to obtain carrier Z-B, whose properties are shown in Table 1.
[0032] At room temperature, add 7g of ethanolamine to 120mL of deionized water, after dissolving, add 46g of ammonium metatungstate hexahydrate, 25.5g of ammonium heptamolybdate tetrahydrate, 35g of nickel nitrate hexahydrate and 5g of phosphoric acid, wait until it is completely dissolved, and set the volume to 200mL A stable co-immersion solution was obtained. Divide the co-immersion solution into two parts of equal volume and set as...
Embodiment 3
[0035] 240g of a macroporous aluminum hydroxide dry rubber powder, whose alumina content is 70%, is mixed with 24g of metatitanic acid, 63g of 25% silica sol, 6g of kale powder, 9g of 66% concentrated nitric acid and polyethylene glycol (Polymerization degree 2000) 10g, add deionized water, knead and mix in a kneader, and then extrude and shape through an extruder to obtain clover strips with a diameter of 1.5mm. Dry in an oven at 120°C for 12h, and bake in a muffle furnace at 550°C for 4h. The properties of the obtained carrier Z-C are shown in Table 1.
[0036] At room temperature, add 8g aminotriacetic acid to 30mL concentrated ammonia water, after dissolving, add deionized water until the volume of the solution is 120mL, add nitric acid dropwise until the pH is 3~4, add 44g ammonium metatungstate hexahydrate, 26g Ammonium heptamolybdate tetrahydrate, 36g nickel nitrate hexahydrate, and 6g phosphoric acid were completely dissolved, and the volume was adjusted to 200mL to ob...
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