Method for preparing hydrocracking catalyst
A hydrocracking and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of poor catalyst activity, low cracking activity, and poor nitrogen tolerance.
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Embodiment 1
[0034] Molecular sieve modification process:
[0035] (1) Take 200g of NaY molecular sieve raw powder prepared in the laboratory, mix it with ammonium nitrate with a concentration of 0.5mol / L according to the liquid-solid ratio of 3:1, exchange at 70°C for 3 hours, repeat this process 3 times, and the exchanged Y molecular sieve Na content in Na 2 O is calculated as 2.5%;
[0036] (2) The molecular sieve obtained in step (1) was mixed with distilled water according to the liquid-solid ratio of 5:1, then, 100ml of ammonium fluorosilicate solution with a concentration of 0.5mol / L was added, and treated at 60°C for 1.0 hour;
[0037] (3) Hydrothermally treat the Y molecular sieve obtained in step (2) at 550°C and 0.1MPa for 2 hours;
[0038] (4) The molecular sieve obtained in step (3) was stirred and mixed with distilled water according to the liquid-solid ratio of 5:1, and then the temperature was raised to 80°C. During the stirring process, 400ml of 0.5mol / L aluminum sulfate...
Embodiment 2
[0050] Molecular sieve modification process:
[0051] (1) Take the NaY molecular sieve raw powder prepared in the laboratory, mix it with ammonium nitrate with a concentration of 0.8mol / L according to the liquid-solid ratio of 3:1, exchange at 70°C for 3 hours, repeat this process 3 times, and the Y molecular sieve after exchange The Na content is 2.0% as Na2O.
[0052] (2) The molecular sieve obtained in step (1) was mixed with distilled water according to the liquid-solid ratio of 6:1, then, 120ml of ammonium fluorosilicate solution with a concentration of 0.7mol / L was added, and treated at 70°C for 1.0 hour;
[0053] (3) Hydrothermally treat the Y molecular sieve obtained in step (2) at 580°C and 0.1MPa for 2 hours;
[0054] (4) The molecular sieve obtained in step (3) was stirred and mixed with distilled water according to the liquid-solid ratio of 6:1, and then the temperature was raised to 90°C. During the stirring process, 400ml of 0.8mol / L aluminum sulfate solution wa...
Embodiment 3
[0066] Molecular sieve modification process:
[0067] (1) Take the NaY molecular sieve raw powder prepared in the laboratory, mix it with ammonium nitrate with a concentration of 0.8mol / L according to the liquid-solid ratio of 3:1, exchange at 70°C for 3 hours, repeat this process 3 times, and the Y molecular sieve after exchange Na content in Na 2 O is calculated as 2.0%.
[0068] (2) The molecular sieve obtained in step (1) was mixed with distilled water according to the liquid-solid ratio of 6:1, then, 120ml of ammonium fluorosilicate solution with a concentration of 0.6mol / L was added, and treated at 80°C for 1.5 hours;
[0069] (3) Hydrothermally treat the Y molecular sieve obtained in step (2) at 580°C and 0.1MPa for 2 hours;
[0070] (4) The molecular sieve obtained in step (3) was stirred and mixed with distilled water according to the liquid-solid ratio of 6:1, and then the temperature was raised to 90°C. During the stirring process, 400ml of 0.8mol / L aluminum sulfa...
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