In situ type molecular sieve hydrogenation cracking catalyst and method for preparing same
A hydrocracking and molecular sieve technology, applied in the direction of molecular sieve catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., to achieve the effect of good selectivity and high activity
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Embodiment 1
[0027] It is the product of in-situ crystallization octahedral molecular sieve of the present invention. Firstly, raw kaolin powder with a particle size of 200 mesh produced in Anhui was roasted in a muffle furnace at 550°C for 2 hours to obtain low-temperature metakaolin. Then take a 5-liter beaker, add 295.6g of aluminum sulfate and add 600g of water to dissolve it, and take 56.3g of solid sodium hydroxide and add 171g of water to dissolve it, slowly add the former to the latter under stirring, then add 225g of the above-mentioned roasted kaolin, and then add the silicon oxide content 992g of 28% water glass, stirred continuously for 1h, left to age for 4h, then added 50g of Y-directing agent, stirred evenly, transferred the above mixture into a reaction kettle and crystallized under hydrothermal conditions at 110°C for 14h, filtered and washed to obtain in-situ crystal Compound A. It is Y molecular sieve determined by XRD light, with a crystallinity of 39% and a specific s...
Embodiment 2
[0029] It is the product of in-situ crystallization octahedral molecular sieve of the present invention. Firstly, the natural raw kaolin powder produced in Shandong with a particle size of 900 mesh was roasted at 950°C for 2 hours in a muffle furnace to obtain high-temperature metakaolin. Then take a 5-liter beaker, add 45.9g of solid sodium hydroxide and 273.7g of water and stir to dissolve, slowly add 212.5g of 12% aluminum chloride solution, stir evenly, add 152g of the above-mentioned roasted kaolin, and then add water with a silicon oxide content of 28% 5361g of glass was stirred continuously for 1 hour, left to age for 8 hours, and then 30g of Y-directing agent was added. After stirring evenly, the above mixture was transferred to a reactor and crystallized under hydrothermal conditions at 97°C for 17 hours, filtered and washed with water to obtain the in-situ crystallization product B. It is a typical Y molecular sieve determined by XRD light, with a crystallinity of 42...
Embodiment 3
[0031] It is the product of in-situ crystallization octahedral molecular sieve of the present invention. Firstly, raw coal kaolin powder with a particle size of 600 mesh produced in Inner Mongolia was roasted at 1350°C for 2 hours in a muffle furnace to transform into mullite. Then take a 5-liter beaker, add 60.9g solid sodium hydroxide and 124.8g sodium aluminate and add water 114.5, stir until dissolved, add the above-mentioned mullite 135g, then add 520g of water glass with a silicon oxide content of 32%, and continue stirring for 1h After standing and aging for 2 hours, 15 g of Y-directing agent was added, and after stirring evenly, the above mixture was transferred to a reaction kettle and crystallized under hydrothermal conditions at 105°C for 11 hours, filtered and washed with water to obtain in-situ crystallization product C. It is a typical Y molecular sieve determined by XRD light, with a crystallinity of 33% and a specific surface area of 288m 2 / g, the pore volu...
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Abstract
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