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Polyolefin nano-structured calalyst carrier and its preparation method

A catalyst carrier and nanostructure technology, which is applied in the field of polyolefin nanostructure catalyst carrier and its preparation, can solve the problem that the particle size of the montmorillonite dispersed phase does not reach the nanoscale dispersion and the like, and achieve the effect of overcoming an excessively small filling amount

Inactive Publication Date: 2006-03-29
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, according to the method of CN 1268406A, the particle size of the montmorillonite dispersed phase in the polymer does not reach the nanoscale dispersion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1 Layered silicate clay / SiO 2 Preparation of composite carrier

[0025] (1) Preparation of organoclay Add 30ml of 0.9M aqueous C 16 h 33 N + (CH 3 ) 3 ammonium salt. The suspension was stirred at 50° C. for 24 hours to obtain montmorillonite in which sodium ions and quaternary ammonium salts in the clay were completely exchanged. After the organic clay is centrifuged, it is repeatedly washed with ethanol to remove excess ions, then resuspended in water, and the product is collected by centrifugation and dried at room temperature so that the water content is lower than 20% to obtain the primary carrier.

[0026] (2) Pillar reaction According to the mass ratio TEOS: primary carrier = 6: 4, TEOS is added to the above-mentioned primary carrier, the mixed system obtained is sheared vigorously in the mixer, and the mixture obtained at last is dried into powder in an oven, Then calcined at 650° C. for 3 hours in a muffle furnace to obtain off-white powder carrie...

Embodiment 2

[0027] Preparation of embodiment 2 layered silicate clay / Mg compound composite carrier

[0028] (1) Preparation of clay suspension Add 30ml 0.9M aqueous C 16 h 33 N + (CH 3 ) 3 ammonium salt. The suspension was stirred at 50° C. for 24 hours to obtain montmorillonite in which sodium ions and quaternary ammonium salts in the clay were completely exchanged. The prepared organoclay was centrifuged, washed repeatedly with ethanol to remove excess ions, and then resuspended in water. The product is then collected by centrifugation and dried at room temperature so that the water content is lower than 20% to obtain the primary carrier.

[0029] (2) Pillar reaction of Mg magnesium compound MgCl 2 Dissolved in butanol to obtain alcoholated MgCl 2 . Alcoholated MgCl 2 : primary carrier=(1-6):(1-4) mixed, the obtained mixed system was sheared vigorously in the mixer, and the finally obtained mixture was dried in an oven to obtain a powder and then roasted in a muffle furnace at...

Embodiment 3

[0030] Example 3 Layered silicate clay / SiO 2 Preparation of composite carrier

[0031] (1) Preparation of organoclay Add 30ml of 0.9M water-containing C 16 h 33 N + (CH 3 ) 3 ammonium salt. The amount of ammonium salt added is twice the clay cation exchange capacity. The suspension was stirred at 50° C. for 24 hours to obtain montmorillonite in which sodium ions and quaternary ammonium salts in the clay were completely exchanged. The prepared organoclay is separated by centrifugation, washed repeatedly with ethanol to remove excess ions, then resuspended in water, and the product is collected by centrifugation again, and placed at room temperature for later use.

[0032] (2) organoclay synthesis of neutral amine solvation will pure alkylamine (C 10 h 21 NH 2 ) into the organoclay prepared above, mixed according to the following molar ratio, amine:organoclay=5:1, and the whole reaction mixture was stirred for 30 minutes, and the obtained mixture was used for the synth...

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Abstract

A catalyst carrier carrying TiCl4 or alkoxytitanium for polymerizing ethene or propene to obtain polyolefin nanoparticles by one step is prepared through mixing cation-exchange treated laminar silicate, amine and precursor of silicon oxide, introducing Mg(OR)2 to the gap between its layers, and calcining. Its advantages are high catalytic activity, high mechanical performance and high adhesion to active component.

Description

technical field [0001] The invention provides a polyolefin nanostructure catalyst carrier and a preparation method thereof, which is an innovation of the carrier and the materials used in the polyolefin polymer polymerization reaction catalyst. Background technique [0002] Nanotechnology has become an important field of new materials today. Nanomaterials refer to material systems whose average particle size or internal structure is within 100nm. Generally use the transmission electron microscope to count the intersection scale of any 600 particles on the electron microscope photo, and then take the arithmetic mean d M , will d M ×1.56 (shape factor), the average particle size of the particles is obtained (see Ke Yangchuan, editor-in-chief, Polymer-Inorganic Nanocomposite Materials, Chemical Press: Beijing, 2003). The nanostructured catalyst carrier refers to the carrier whose aggregates (soft aggregates) of the carrier are counted under the transmission electron microscop...

Claims

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Application Information

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IPC IPC(8): C08F10/00C08F4/02C08F4/646
Inventor 柯扬船王皓
Owner BC P INC CHINA NAT PETROLEUM CORP
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