A kind of spherical aluminum-containing mesoporous composite material and supported catalyst, its preparation method and application, and the method of ethylene polymerization
A composite material and aluminum mesoporous technology, which is applied to spherical aluminum-containing mesoporous composite materials and supported catalysts and their preparation and application, as well as the fields of ethylene polymerization, and can solve the problems of low catalytic activity and the like
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[0032] The present invention also provides a method for preparing a spherical aluminum-containing mesoporous composite material, the method comprising the following steps:
[0033] (1) providing a mesoporous molecular sieve material with a three-dimensional cubic pore structure or preparing a filter cake of a mesoporous molecular sieve material with a three-dimensional cubic pore structure as component a;
[0034](2) providing silica gel or preparing a filter cake of silica gel as component b;
[0035] (3) mixing the component a and the component b and performing ball milling in a high-alumina ceramic tank, and slurrying the solid powder obtained after the ball milling with water, and then spray-drying the obtained slurry;
[0036] Wherein, the component a makes the spherical aluminum-containing mesoporous composite material have an average particle diameter of 10-100 microns, a specific surface area of 80-200 square meters per gram, a pore volume of 0.5-2 milliliters per gr...
Embodiment 1
[0074] This example is used to illustrate the spherical aluminum-containing mesoporous composite material and supported catalyst provided by the present invention and their preparation methods.
[0075] (1) Preparation of spherical aluminum-containing mesoporous composites
[0076] Dissolve 6g (0.001mol) triblock copolymer template agent P123 in 10mL concentrated hydrochloric acid and 220mL deionized aqueous solution, stir at 15°C for 4h to dissolve P123 and form a transparent solution, then add 6g (0.08 mol) n-butanol and stirred for 1h, then the solution was placed in a water bath at 30°C, and 12.9g (0.062mol) ethyl orthosilicate was slowly added dropwise at a rate of 1g / min, keeping the temperature at 30°C, Stir for 24 hours at a pH value of 4.5, then hydrothermally treat at 100°C for 24 hours, and finally filter and wash repeatedly with deionized water. After suction filtration, filter cake A1 of mesoporous molecular sieve material with a three-dimensional cubic pore struc...
Embodiment 2
[0101] This example is used to illustrate the spherical aluminum-containing mesoporous composite material and supported catalyst provided by the present invention and their preparation methods.
[0102] (1) Preparation of spherical aluminum-containing mesoporous composites
[0103] Dissolve 6g (0.001mol) triblock copolymer template agent P123 in 10mL concentrated hydrochloric acid and 220mL deionized aqueous solution, stir at 15°C for 4h to dissolve P123 and form a transparent solution, then add 4.5g ( 0.06mol) n-butanol and stirred for 1h, then placed the solution in a water bath at 30°C, and slowly added 10.4g (0.05mol) ethyl orthosilicate dropwise at a rate of 1g / min, keeping the temperature at 60°C , stirred at a pH value of 6 for 10 hours, then hydrothermally treated at 150°C for 10 hours, and finally filtered and washed repeatedly with deionized water. After suction filtration, a filter cake A2 of mesoporous molecular sieve material with a three-dimensional cubic channel...
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Abstract
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