Supported metallocene catalyst and preparation method and application thereof
A technology of metallocene catalyst and metallocene compound, which is applied in the field of supported metallocene catalyst and its preparation and application, and can solve the problems of low catalytic activity, low polymerization temperature, easy polymer sticking and energy consumption, etc.
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[0055] The present invention also provides a method for preparing the above-mentioned supported metallocene catalyst, the preparation method comprising: under the protection of an inert gas, ball milling anhydrous magnesium chloride and alkylaluminoxane at a temperature of 15-100°C for 0.1- 100 hours, then under the protection of an inert gas, the carrier is first contacted with the first solution to obtain the carrier after the first contact, and the first solution contains the product obtained by ball milling and the first solvent; remove the first contact after the first solution The first solvent on the carrier; the second contact is carried out between the carrier removed from the first solvent and the second solution to obtain the second contacted carrier, the second solution contains the metallocene compound and the second solvent, wherein, The carrier is rod-shaped macroporous mesoporous silica, the length of the rod-shaped macroporous mesoporous silica is 2-20 microns,...
Embodiment 1
[0093] This example is used to illustrate the supported metallocene catalyst and its preparation method according to the present invention.
[0094] 4.0 grams of triblock copolymer polyethylene oxide-polyoxypropylene-polyoxyethylene (Aldrich company, P123) was added to a solution (pH=4.4) of 16.4 ml of hydrochloric acid and 128 ml of water at a concentration of 37% by weight, at 40 Stir at ℃ until the polyoxyethylene-polyoxypropylene-polyoxyethylene is completely dissolved, then add 8.86g of tetraethyl orthosilicate to the above solution, stir at 40℃ for 24 hours, then transfer the solution to polytetrafluoroethylene In a lined reactor, crystallize in an oven at 150°C for 24 hours, then filter, wash with distilled water, and dry to obtain the raw macroporous mesoporous silica powder.
[0095] The raw macroporous mesoporous silica powder obtained in the previous step was calcined in a muffle furnace at a temperature of 600° C. for 24 hours to remove the template agent to obtain...
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