Preparation method of BETA-MOR symbiotic molecular sieve
A technology of symbiotic molecular sieve and molecular sieve, applied in the direction of mercerized crystalline aluminosilicate zeolite, crystalline aluminosilicate zeolite, etc., can solve the problems of unsuitable BETA-MOR symbiotic molecular sieve synthesis control, low sample crystallinity, etc., and achieve a green preparation process. Environmental protection, cheap and easy-to-obtain raw materials, and the effect of increasing the crystallization temperature
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Embodiment 1
[0036] Take 40g of BETA molecular sieve and 1000mL of 1mol / L NaOH solution in a beaker, stir at room temperature for 30min, transfer to a closed reaction kettle, and treat in an oven at 120°C for 4h. The resulting suspension is the structure-directing agent and is ready for use.
[0037] Take 22 g of sodium hydroxide and 5 g of sodium aluminate in 500 mL of distilled water, and stir vigorously until they are completely dissolved. Add 70 g of white carbon black slowly and stir vigorously for 30 min. Then add 20mL of the structure-directing agent prepared in the previous step, stir vigorously for 30 min, then put it into a closed reaction kettle, crystallize in an oven at 120°C for 5h, and then crystallize at 150°C for 48h. The obtained product was washed 4 times with distilled water to neutrality, and dried at 120°C for 12 hours, and the obtained sample number was CL1.
Embodiment 2
[0039] Take 35g of BETA molecular sieves and 800mL of 0.8 mol / L KOH solution in a beaker, stir at room temperature for 30min, transfer to a closed reaction kettle, and treat in an oven at 120°C for 3h. The resulting suspension is the structure-directing agent and is ready for use.
[0040] Take 31 g of sodium hydroxide and 19 g of aluminum sulfate in 300 mL of distilled water, and stir vigorously until they are completely dissolved. Slowly add 100 mL of water glass and stir vigorously for 30 min. Then add 30mL of the structure directing agent prepared in the previous step, stir vigorously for 40 min, then put it into a closed reaction kettle, crystallize in an oven at 125°C for 4h, and then crystallize at 140°C for 35h. The obtained product was washed 4 times with distilled water to neutrality, and dried at 120°C for 12 hours, and the obtained sample number was CL2.
Embodiment 3
[0042] Take 40g of BETA molecular sieves and 1000mL of 1.2 mol / L NaOH solution in a beaker, stir at room temperature for 30min, transfer to a closed reaction kettle, and treat in an oven at 120°C for 4h. The resulting suspension is the structure-directing agent and is ready for use.
[0043] Take 20 g of sodium hydroxide and 4 g of sodium aluminate in 400 mL of distilled water, and stir vigorously until they are completely dissolved. Add 180 g of silica sol slowly and stir vigorously for 30 min. Then add 40mL of the structure-directing agent prepared in the previous step, stir vigorously for 30 minutes, then put it into a closed reaction kettle, crystallize in an oven at 130°C for 6h, and then crystallize at 170°C for 48h. . The obtained product was washed 4 times with distilled water to neutrality, and dried at 120°C for 12 hours, and the obtained sample number was CL3.
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