A kind of catalytic material and preparation method thereof
A technology for catalytic materials and oxides, applied in chemical instruments and methods, catalytic cracking, molecular sieve catalysts, etc., can solve problems such as affecting the cracking reaction of macromolecules, alleviate subsequent treatment costs and production costs, and expand recycling methods. The effect of long crystallization time
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Embodiment 1
[0029] This example illustrates the use of the preparation method of the present invention and the resulting catalytic material.
[0030] The mixed solution (concentration 50gSiO2) of the NaY molecular sieve crystallization mother liquor and filtrate containing P-type miscellaneous crystal 2 / L, suspended matter concentration 1200mg / L) into the container, and then quantitative sodium metaaluminate solution (concentration 185gAl 2 o 3 / L, caustic ratio 2.55) is added therein and carries out contact treatment, and the control pH value is 13.8, obtains slurry A; In slurry A, add the AlCl of metering 3 Solution (concentration 60gAl 2 o 3 / L), and adjust the final pH value of the slurry to be 9.2, thus obtaining slurry B; the temperature of slurry B was raised to 60°C and treated at a constant temperature at this temperature for 3 hours, and the resulting solid precipitate was filtered according to the dry basis of the precipitate: Ammonium salt: H 2 The weight ratio of O=1:0....
Embodiment 2
[0034] This example illustrates the use of the preparation method of the present invention and the resulting catalytic material.
[0035] Add an appropriate amount of water into the container, heat up to 45°C, and under vigorous stirring, mix the NaY molecular sieve crystallization mother liquor containing P-type heterocrystals and the filtrate (concentration 42gSiO 2 / L, suspended matter concentration 680mg / L) and sodium metaaluminate solution (concentration 150gAl 2 o 3 / L, caustic ratio 1.65) add in the above-mentioned container and carry out contact treatment simultaneously, control pH value to be 13.6, obtain slurry A; Then add Al in slurry A 2 (SO 4 ) 3 Solution (concentration 90gAl 2 o 3 / L), and adjust the end point pH value of the slurry to be 9.8, thus obtaining slurry B; the slurry B was warmed up to 55°C and treated at a constant temperature at this temperature for 6 hours, and the resulting solid precipitate was filtered according to the dry basis of the prec...
Embodiment 3
[0038] This example illustrates the use of the preparation method of the present invention and the resulting catalytic material.
[0039] The NaY molecular sieve crystallization washing filtrate (concentration 38gSiO2) that the crystallization time is longer and the crystallinity is lower but cannot detect P-type miscellaneous crystals 2 / L, suspended matter concentration 495mg / L) into the container, and then add ammonia water to it for contact treatment at 55°C under vigorous stirring, and control the pH value to 13.1 to obtain slurry A; add metered Al to slurry A 2 (SO 4 ) 3 Solution (concentration 60gAl 2 o 3 / L), and adjust the final pH value of the slurry to be 8.6, thus obtaining slurry B; the slurry B was heated up to 70°C and treated at a constant temperature at this temperature for 4 hours, and the resulting solid precipitate was filtered according to the dry basis of the precipitate: Acid: H 2 The weight ratio of O=1:0.12:12 was contacted with dilute sulfuric ac...
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Abstract
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