Catalyst carrier for olefin polymerization and preparation method and application of catalyst carrier
A catalyst carrier and olefin polymerization technology, which is applied in the field of olefin polymerization, can solve problems such as increased operating costs, increased costs, and adverse effects of by-product recovery and treatment, and achieves the effect of saving raw material costs and saving operating costs
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[0039] In a second aspect, the present invention provides a method for preparing the catalyst carrier for the above-mentioned olefin polymerization, the method comprising:
[0040] 1) the general formula MgX 2 Shown magnesium halide, general formula R 1 The compound represented by OH and an optional inert liquid medium are first contacted, and then the mixture obtained after the first contact is subjected to a second contact with an oxirane compound at no higher than 30°C to obtain a liquid mixture;
[0041] 2) heating the liquid mixture obtained in step 1) to not lower than 40°C;
[0042] Among them, in the general formula MgX 2 Among them, two Xs are the same or different, each independently selected from halogen elements, C 1 -C 14 Alkyl or alkoxy, C 6 -C 14 A group consisting of aryl or aryloxy; in the general formula R 1 OH, R 1 for C 1 -C 12 Alkyl or C 3 -C 12 The cycloalkyl group; The oxirane compound has the structure shown in formula (II),
[0043]
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preparation example 1
[0087] This preparation example is used to illustrate the catalyst carrier for olefin polymerization provided by the present invention and its preparation method.
[0088] In a 0.6L reactor, add 0.08mol magnesium chloride and 1.7mol ethanol, and raise the temperature to 90°C with stirring. After constant temperature reaction for 1 hour, lower the temperature to 15°C, add 0.3 mol of epichlorohydrin pre-cooled to 15°C and continue to stir. After the temperature stabilizes at 15°C for 0.5h, start to heat up at a rate of 2°C / min. After reaching 50°C, maintain it for 20 minutes. Press filtration, wash the press filtration product 5 times with hexane, and vacuum dry to obtain catalyst support Z1 for olefin polymerization.
[0089] The average particle diameter (D50) of the catalyst carrier Z1 for olefin polymerization is 70 microns, and the particle size distribution ((D90-D10) / D50) is 0.8. The particle morphology observed by optical microscope is as follows: figure 1 shown. It ...
preparation example 2
[0098] This preparation example is used to illustrate the catalyst carrier for olefin polymerization provided by the present invention and its preparation method.
[0099]In a 0.6L reactor, add 0.08mol magnesium chloride and 1.2mol ethanol, and raise the temperature to 80°C with stirring. After constant temperature reaction for 1.5 hours, cool down to 20°C, add 0.35 mol of epichlorohydrin pre-cooled to 20°C, wait for the temperature to stabilize at 20°C for 20 minutes, then start to heat up at a rate of 3°C / min, to 60°C , maintain 20min. Press filtration, wash the press filtration product with hexane for 5 times, and vacuum-dry to obtain catalyst carrier Z2 for olefin polymerization.
[0100] The average particle diameter (D50) of the catalyst carrier Z2 for olefin polymerization is 72 microns, and the particle size distribution ((D90-D10) / D50) is 0.8. The particle morphology observed by optical microscope is as follows: figure 2 shown. It can be seen from the figure that...
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