Hydrocracking catalyst and preparation method thereof
A hydrocracking and catalyst technology, which is applied in the field of oil refining, can solve the problems of affecting the yield of target products and reducing the selectivity of catalysts, and achieve high selectivity, reduce possibility, and improve the effect of acidity on the outer surface
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Embodiment 1
[0054] (1) Preparation of Mo-Co-P aqueous solution:
[0055] 1.9g phosphoric acid H 3 PO 4 (concentration 85 wt%) was dissolved in 80mL of water, then added 5.2g of molybdenum trioxide and 1.9g of basic cobalt carbonate, heated to 100°C and stirred and refluxed for 2.0h, filtered and set to 100mL to obtain Mo-Co-P aqueous solution. where MoO 3 The concentration is 0.05g / mL, Co 2 o 3 The concentration of P is 0.01g / mL, and the concentration of P is 0.005g / mL.
[0056] (2) Preparation of catalyst:
[0057] 45g alumina carrier (pore volume 0.70mL / g, specific surface area 300m 2 / g, cylindrical shape, diameter 0.8mm) was added to 100mL aqueous solution containing 18g citric acid, dried at 70°C for 8h; Dry at 70°C for 8 hours; mix 100mL Mo-Co-P aqueous solution with 100mL aqueous solution containing 33.1g phosphotungstic acid, add to the above material, mix well and dry at 70°C for 4h, then heat up to 110°C and dry for 4h. Prepare catalyst precursor A; then add it to 150mL...
Embodiment 2
[0063] (1) Preparation of Mo-Co-P aqueous solution:
[0064] 3.8g phosphoric acid H 3 PO 4 (Concentration 85 wt%) was dissolved in 80mL of water, then added 10.4g molybdenum trioxide and 4.8g basic cobalt carbonate, heated to 100°C and stirred and refluxed for 2.0h, filtered and set to 100mL to obtain Mo-Co-P aqueous solution. where MoO 3 The concentration is 0.1g / mL, Co 2 o 3 The concentration of P is 0.025g / mL, and the concentration of P is 0.01g / mL.
[0065] (2) Preparation of catalyst:
[0066] 46.2g alumina carrier (pore volume 0.70mL / g, specific surface area 300m 2 / g, cylindrical strip shape, diameter 0.8mm) was added to 100mL aqueous solution containing 23.1g citric acid, dried at 70°C for 8h; Then dry at 70°C for 8 hours; mix 100mL Mo-Co-P aqueous solution with 50mL aqueous solution containing 18.1g phosphotungstic acid, add to the above materials, mix well and dry at 70°C for 4h, then heat up to 110°C and dry for 4h , to prepare catalyst precursor A; then add...
Embodiment 3
[0072] (1) Preparation of Mo-Co-P aqueous solution:
[0073] 7.6g phosphoric acid H 3 PO 4 (concentration 85 wt%) was dissolved in 80mL of water, then added 20.8g of molybdenum trioxide and 9.6g of basic cobalt carbonate, heated to 100°C and stirred and refluxed for 2.0h, filtered and set to 100mL to obtain Mo-Co-P aqueous solution. where MoO 3 The concentration is 0.2g / mL, Co 2 o 3 The concentration of P is 0.05g / mL, and the concentration of P is 0.02g / mL.
[0074] (2) Preparation of catalyst:
[0075] 37.2g alumina carrier (pore volume 0.70mL / g, specific surface area 300m 2 / g, cylindrical strip shape, diameter 0.8mm) was added to 100mL aqueous solution containing 11.2g citric acid, dried at 70°C for 8h; Then dry at 70°C for 8h; mix 100mL Mo-Co-P aqueous solution with 50mL aqueous solution containing 6.7g phosphotungstic acid, add to the above material, mix well and dry at 70°C for 4h, then heat up to 110°C and dry for 4h , to prepare catalyst precursor A; then add ...
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