Preparation method of catalyst carrier for olefin polymerization, carrier prepared by the method and application thereof
A catalyst carrier, a technology for olefin polymerization, applied in the field of olefin polymerization, can solve the problems of increasing operating costs, increasing costs, carrier adhesion, etc., and achieving the effects of saving raw material costs, saving operating costs, and improving bulk density
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[0023] In a first aspect, the present invention provides a method for preparing a catalyst carrier for olefin polymerization, the method comprising:
[0024] 1) the magnesium halide shown in the general formula MgXY, the general formula R 1 The compound represented by OH and the optional inert liquid medium are subjected to the first contact at a temperature not lower than 60°C, and then the mixture obtained after the first contact is subjected to the second contact with the oxirane compound at a temperature not higher than 30°C. contact to obtain a liquid mixture;
[0025] 2) heating the liquid mixture obtained in step 1) to not lower than 40°C;
[0026] Wherein, in the general formula MgXY, X is a halogen element, and Y is selected from halogen elements, C 1 -C 14 Alkyl or alkoxy, C 6 -C 14 A group consisting of aryl or aryloxy;
[0027] In general formula R 1 OH, R 1 for C 1 -C 12 Alkyl or C 3 -C 12 Cycloalkyl;
[0028] The oxirane compound has a structure show...
preparation example 1
[0075] This preparation example is used to illustrate the catalyst carrier for olefin polymerization provided by the present invention and its preparation method.
[0076] In a 0.6L reaction kettle, add 0.08mol magnesium chloride and 1.7mol ethanol, heat up to 90°C under stirring, and after constant temperature reaction for 1 hour, cool down to 15°C, add 0.3mol epichlorohydrin pre-cooled to 15°C, After the temperature was stabilized at 15°C for 0.5h, the temperature was raised at a rate of 2°C / min, and maintained at 50°C 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.
[0077] 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 can be seen from the figure that the par...
preparation example 2
[0082] This preparation example is used to illustrate the catalyst carrier for olefin polymerization provided by the present invention and its preparation method.
[0083] 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.
[0084] 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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