Hydrocracking catalyst and preparation method thereof
A hydrocracking and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems such as low catalyst activity, adverse effects on product quality, and insignificant increase in oil selectivity in catalysts, etc., to achieve Effects of reduced coke yield, good cracking activity and product selectivity, and high proportion of mesopores
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Embodiment 1
[0046] Take 278g of NaY raw powder and put it into 800mL of clean water, raise the temperature to 95°C, and start to add dropwise (NH 4 ) 2 SiF 6 Aqueous solution, 307mL solution concentration is 72g / L (NH 4 ) 2 SiF 6 solution, stirring at constant temperature for 2 hours after the dropwise addition, filtering and drying after the completion of the constant temperature, the dry basis of the dried molecular sieve is 65.3wt%; the above-mentioned dried molecular sieve is added to the hydrothermal treatment device, under gauge pressure 0.25MPa, temperature Under the conditions of 610°C and treatment time of 1.0 hour, carry out hydrothermal treatment on molecular sieve; take 130g of molecular sieve after hydrothermal treatment and put it into 520mL aqueous solution of tetraethylammonium hydroxide with a mass concentration of 5.3%, and stir at constant temperature at 80°C for 4 hours , and then transfer the mixed material to a crystallization tank for hydrothermal crystallizatio...
Embodiment 2
[0048] Take 278g of NaY raw powder and put it into 800mL of clean water, raise the temperature to 100°C, and start to add dropwise (NH 4 ) 2 SiF 6 Aqueous solution, 182mL solution concentration is 55g / L (NH 4 ) 2 SiF 6 solution, stirring at constant temperature for 2 hours after the dropwise addition, filtering and drying after the completion of the constant temperature, the dry basis of the dried molecular sieve is 68.0wt%; the above-mentioned dried molecular sieve is added to the hydrothermal treatment device, under gauge pressure 0.30MPa, temperature Under the conditions of 670°C and treatment time of 2.0 hours, the molecular sieve was hydrothermally treated; 130g of the hydrothermally treated molecular sieve was put into 910mL of tetrapropylammonium hydroxide aqueous solution with a mass concentration of 7.5%, and stirred at 90°C for 4 hours , and then transfer the mixed material to a crystallization kettle for hydrothermal crystallization, the crystallization temperat...
Embodiment 3
[0050] Take 278g of NaY raw powder and put it into 1000mL of clean water, raise the temperature to 100°C, and start to add dropwise (NH 4 ) 2 SiF 6 Aqueous solution, 417mL solution concentration is 85g / L (NH 4 ) 2 SiF 6 solution, stirring at constant temperature for 3 hours after the dropwise addition, filtering and drying after the completion of the constant temperature, the dry basis of the dried molecular sieve is 67.2wt%; the above-mentioned dried molecular sieve is added to the hydrothermal treatment device, under gauge pressure 0.35MPa, temperature Under the conditions of 700°C and treatment time of 3.0 hours, the molecular sieve was hydrothermally treated; 130g of the hydrothermally treated molecular sieve was put into 1040mL of tetraethylammonium hydroxide aqueous solution with a mass concentration of 3.5%, and stirred at a constant temperature of 85°C for 3 hours , and then transfer the mixed material to a crystallization tank for hydrothermal crystallization, the...
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Abstract
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