Supported non-metallocene catalyst and preparation method and application thereof
A non-metallocene, supported technology, applied in the field of non-metallocene catalysts, can solve the problems of complex loading process, low olefin polymerization activity, difficult to adjust, etc.
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[0095] The invention relates to a preparation method of a supported non-metallocene catalyst, comprising the following steps: reacting a chemical treatment agent selected from group IVB metal compounds with a porous carrier optionally subjected to thermal activation treatment to obtain a modified carrier; making magnesium Dissolving the compound in the first solvent to obtain a magnesium compound solution; mixing the modified carrier with the magnesium compound solution to obtain a first mixed slurry; adding a precipitant to the first mixed slurry to obtain a composite The step of carrier; contacting the non-metallocene complex with the composite carrier in the presence of a second solvent to obtain a second mixed slurry; and directly drying the second mixed slurry to obtain the loaded non-metallocene Catalyst steps.
[0096] The porous carrier will be specifically described below.
[0097] According to the present invention, as the porous support, for example, those organic ...
Embodiment 1
[0322] The porous carrier is silicon dioxide, that is, silica gel, model ES757 of Ineos Company. First, the silica gel is thermally activated by continuously calcining at 600° C. for 4 hours under a nitrogen atmosphere.
[0323] The chemical treatment agent is titanium tetrachloride (TiCl 4 ). Weigh 5g of thermally activated silica gel, add 60ml of hexane, add titanium tetrachloride under normal temperature stirring conditions, react at 60°C for 2h, filter, wash with hexane 3 times, 60ml each time, and finally vacuum dry to obtain modified carrier.
[0324] The magnesium compound adopts anhydrous magnesium chloride, the solvent for dissolving the magnesium compound adopts tetrahydrofuran, and the chemical treatment agent adopts titanium tetrachloride. The non-metallocene complex adopts the structure compound of.
[0325] Weigh anhydrous magnesium chloride, add the first solvent tetrahydrofuran and heat to 60°C to dissolve completely, then add the modified carrier, stir fo...
Embodiment 2
[0330] Basically the same as Example 1, but with the following changes:
[0331] Before the contact reaction between the non-metallocene complex and the composite carrier, the auxiliary chemical treatment agent methylaluminoxane (MAO, 10wt% toluene solution) is used to treat the composite carrier.
[0332] Wherein, the molar ratio of the magnesium compound in terms of Mg element to the auxiliary chemical treatment agent methylaluminoxane is 1:0.3.
[0333] Supported non-metallocene catalysts are designated CAT-2.
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