Catalyst for hydrogenation and upgrading of diesel oil and preparation method thereof
A hydrogenation modification and catalyst technology, applied in molecular sieve catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc.
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preparation example Construction
[0064] 1. Add in the preparation process of alumina dry rubber powder, such as introducing by co-precipitation and step-by-step precipitation, and then knead with molecular sieves to form, and obtain Mo-containing carrier after drying and roasting;
[0065] 2. Add in the form of kneading when the carrier is formed: mix the alumina dry rubber powder, molecular sieve and the compound containing the active metal component Mo evenly, then knead and shape, dry and roast to make the Mo-containing carrier;
[0066] 3. Mix and knead alumina dry rubber powder and molecular sieve, then dry and roast to make a carrier, then impregnate the carrier with a solution containing active metal component Mo, dry and roast to make a Mo-containing carrier.
[0067] In the above molding process, conventional molding aids, such as one or more of extrusion aids, adhesives, peptizers, etc., can be added, and the amount added can be determined according to the properties of the prepared catalyst accordin...
Embodiment 1
[0081] This example describes the preparation method of the catalyst precursor. The specific surface area of alumina dry rubber powder containing silicon and boron is 350m 2 / g, the pore volume is 0.90ml / g.
[0082] Weigh 380g of alumina dry rubber powder containing silicon and boron, add 6g each of citric acid and turnip powder, 18g of β molecular sieve, mix well, add 340g of acidic solution, HNO in the acidic solution 3 The weight concentration is 1.74%, and the rest is distilled water. After rolling for 20 minutes, extrude the strips with a circular orifice plate with a diameter of 1.7mm. After drying at 120°C for 4h, calcining at 500°C for 3h. The prepared carrier note is designated as S1. The prepared support strip S1 was impregnated with a solution containing Mo, dried at 130°C for 4 hours, and then calcined at 500°C for 2 hours, and the obtained catalyst precursor was designated as S1.
[0083] Weigh 360g of alumina dry rubber powder containing silicon and boron,...
Embodiment 2
[0092] Weigh 12g of tartaric acid, stir and dissolve in 30g of water to prepare wetting solution I. Take 200g of the S1 carrier, and spray the wetting solution I evenly on the S1 for 15 minutes. After spraying and immersing in the wetting solution I, dry at 100°C for 2 hours, impregnate the above-mentioned carrier with an equal volume of impregnating solution containing Co and P, and divide the obtained sample into two parts on average, of which the first sample is not preserved, and is dried at 120°C for 3 hours The sample obtained was calcined at 480°C for 2 hours, and the obtained sample was designated as B1; the second sample was cured for 1 hour, dried at 120°C for 3 hours, and calcined at 480°C for 2 hours, and the obtained sample was designated as B2.
[0093] Weigh 6g of polyethylene glycol 2000 (that is, polyethylene glycol with a molecular weight of 2000, the same below), stir and dissolve in measured water to prepare solution II. Samples B1 and B2 were impregnated ...
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