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Supported polyethylene catalyst ingredient and preparation method thereof, and supported polyethylene catalyst and application thereof

A catalyst and polyethylene technology, applied in the production of bulk chemicals, etc., can solve the problems of low catalytic efficiency and achieve the effects of high catalytic efficiency, narrow distribution, and large pore volume

Active Publication Date: 2016-02-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] An object of the present invention is to provide a new supported polyethylene catalyst component and its preparation method in order to overcome the low catalytic efficiency of the supported catalyst made of mesoporous molecular sieve material in the prior art in the process of ethylene polymerization

Method used

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  • Supported polyethylene catalyst ingredient and preparation method thereof, and supported polyethylene catalyst and application thereof
  • Supported polyethylene catalyst ingredient and preparation method thereof, and supported polyethylene catalyst and application thereof
  • Supported polyethylene catalyst ingredient and preparation method thereof, and supported polyethylene catalyst and application thereof

Examples

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preparation example Construction

[0057] In step (1), "providing a mesoporous molecular sieve material with a one-dimensional hexagonal pore distribution structure" can be directly weighing or selecting a product of a mesoporous molecular sieve material with a one-dimensional hexagonal pore distribution structure, or preparing a product with a one-dimensional hexagonal pore distribution structure. Mesoporous molecular sieve materials with hexagonal channel distribution structure. The preparation method of the mesoporous molecular sieve material with a one-dimensional hexagonal pore distribution structure can be implemented according to conventional methods, for example, the preparation method can include: preparing the filter material of the mesoporous molecular sieve material with a one-dimensional hexagonal pore distribution structure according to the above method Cake, then the resulting filter cake is dried, and the templating agent in the product obtained after drying is removed. The conditions for removi...

Embodiment 1

[0090] This example is used to illustrate the supported polyethylene catalyst component of the present invention and its preparation method.

[0091] (1) Preparation of spherical composite carrier

[0092] Add 1.0g (0.0002mol) triblock copolymer surfactant P123 and 2.76g (0.06mol) ethanol to 28ml buffer solution of acetic acid and sodium acetate with a pH value of 4, and stir at 15°C until P123 is completely Dissolve, then add 6g (0.053mol) trimethylpentane to the resulting solution, stir at 15°C for 8h, then add 2.13g (0.014mol) tetramethoxysilane, at 15°C, pH value Stir for 20h under the conditions of 4.5, then transfer the resulting solution to a polytetrafluoroethylene-lined reactor, crystallize at 60°C for 24h, then filter and wash 4 times with deionized water, then suction filter to obtain Filter cake X1 of mesoporous molecular sieve material with one-dimensional hexagonal channel distribution structure;

[0093] Hexadecyltrimethylammonium bromide and tetraethyl orthos...

Embodiment 2

[0113] This example is used to illustrate the supported polyethylene catalyst component of the present invention and its preparation method.

[0114] (1) Preparation of spherical composite carrier

[0115] Add 1.0g (0.0002mol) triblock copolymer surfactant P123 and 1.84g (0.04mol) ethanol to 28ml buffer solution of acetic acid and sodium acetate with a pH value of 5, and stir at 15°C until P123 is completely Dissolve, then add 9.12g (0.08mol) trimethylpentane to the resulting solution, stir at 15°C for 8h, then add 3.04g (0.02mol) tetramethoxysilane, at 25°C, pH Stirred under the condition of 5.5 for 45h, then transferred the obtained solution to a polytetrafluoroethylene-lined reactor, crystallized at 100°C for 20h, then filtered and washed 4 times with deionized water, and then suction filtered to obtain Filter cake X2 of mesoporous molecular sieve material with one-dimensional hexagonal single-pore distribution structure.

[0116] Hexadecyltrimethylammonium bromide and te...

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Abstract

The invention discloses a supported polyethylene catalyst ingredient and a preparation method thereof, and a supported polyethylene catalyst and an application thereof. The supported polyethylene catalyst ingredient comprises a spherical composite carrier, and magnesium salt and titanium salt supported on the spherical composite carrier, wherein the spherical composite carrier contains a molecular sieve material having a one-dimensional hexagonal tunnel structure, the molecular sieve material having a two-dimensionl hexagonal tunnel structure and silica gel, an average particle size of the spherical composite carrier is 30-60 micrometers, a specific surface area is 150-600 square meter / g, a pore volume is 0.5-1.5milliliters / g, apertures present three-peak distribution, three peaks can be respectively corresponded to a first most probable aperture, a second most probable aperture and a third most probable aperture, the first most probable aperture is 2-4 nanometers, the second most probable aperture is 5-15 nanometers, and the third most probable aperture is 10-40 nanometers. The provided supported polyethylene catalyst has high catalysis efficiency during an ethene catalysis / polymerization process.

Description

technical field [0001] The present invention relates to a supported polyethylene catalyst component, a preparation method of the supported polyethylene catalyst component, a supported polyethylene catalyst component prepared by the method, a supported polyethylene catalyst comprising the catalyst component, And the application of the catalyst in ethylene polymerization. Background technique [0002] Mesoporous molecular sieve materials have the advantages of ordered pores, adjustable pore size, large specific surface area and pore volume, and are good catalysts and carrier materials. In recent years, heterogeneous catalysts such as solid acids and heteropolyacids prepared by using mesoporous molecular sieve materials as templates not only have high catalytic activity for ethylene polymerization, but also have fewer side reactions and simpler post-treatment. [0003] The development and application of polyethylene catalysts is another major breakthrough in the field of olefi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/02C08F4/646C08F4/02
CPCY02P20/52
Inventor 亢宇张明森王洪涛
Owner CHINA PETROLEUM & CHEM CORP
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