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Spherical montmorillonite mesoporous composite carrier and supported polyethylene catalyst, preparation method and application thereof

A montmorillonite intermediary and composite carrier technology is applied in the field of preparing supported polyethylene catalysts, which can solve the problems of low catalyst activity, and achieve the effects of reducing production costs, not corroding instruments, and expanding application fields.

Active Publication Date: 2018-03-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the defect of low catalytic activity of the supported catalyst made of existing mesoporous molecular sieve materials in the catalytic reaction process, and provide a spherical montmorillonite mesoporous composite carrier, a spherical montmorillonite Preparation method of destoned mesoporous composite carrier, spherical montmorillonite mesoporous composite carrier prepared by the method, a supported polyethylene catalyst, a preparation method of supported polyethylene catalyst, the supported polyethylene catalyst Applications in catalytic reactions

Method used

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  • Spherical montmorillonite mesoporous composite carrier and supported polyethylene catalyst, preparation method and application thereof
  • Spherical montmorillonite mesoporous composite carrier and supported polyethylene catalyst, preparation method and application thereof
  • Spherical montmorillonite mesoporous composite carrier and supported polyethylene catalyst, preparation method and application thereof

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preparation example Construction

[0034] The present invention also provides a method for preparing a spherical montmorillonite mesoporous composite carrier, the method comprising the following steps:

[0035] (1) Stir template agent, N,N-dimethylformamide and hydrochloric acid at 25-60°C until dissolved;

[0036] (2) stirring the solution obtained in step (1) with ethyl orthosilicate at a temperature of 25-60° C. for 1-2 hours to obtain a filter cake of a mesoporous material;

[0037] (3) water glass is contacted with inorganic acid, and the product obtained after contacting is filtered to obtain silica gel filter cake;

[0038] (4) Mix the filter cake of the mesoporous material, the silica gel filter cake and montmorillonite evenly and ball mill, and the solid powder obtained after the ball mill is slurried with water and then spray-dried, and then spray-dried the obtained The template is removed from the product.

[0039] In the preparation process of the above-mentioned spherical montmorillonite mesoporo...

Embodiment 1

[0071] This example is used to illustrate the spherical montmorillonite mesoporous composite carrier and supported polyethylene catalyst provided by the present invention and the preparation method thereof.

[0072] (1) Preparation of spherical montmorillonite mesoporous composite carrier

[0073] 2.0 grams of P123 (the substance whose registration number is 9003-11-6 in the American Chemical Abstracts, its average molecular weight Mn=5800) and 15 grams of N,N-dimethylformamide (DMF) were added to 11.2 grams of 37% In a solution of hydrochloric acid and 64ml of water, stir at 40°C until P123 is completely dissolved; then add 4.45 grams of ethyl orthosilicate to the above solution and stir at 40°C for 1 hour, after filtering, washing, and drying, a product with a double-pore structure is obtained. filter cake of mesoporous material;

[0074] After the water glass with a concentration of 15% by weight and the sulfuric acid solution with a concentration of 12% by weight are mixe...

Embodiment 2

[0089] This example is used to illustrate the spherical montmorillonite mesoporous composite carrier and supported polyethylene catalyst provided by the present invention and the preparation method thereof.

[0090] (1) Preparation of spherical montmorillonite mesoporous composite carrier

[0091] 2.0 grams of P123 (the substance whose registration number is 9003-11-6 in the American Chemical Abstracts, its average molecular weight Mn=5800) and 15 grams of N,N-dimethylformamide (DMF) were added to 11.2 grams of 37% In a solution of hydrochloric acid and 64ml of water, stir at 40°C until P123 is completely dissolved; then add 4.45 grams of ethyl orthosilicate to the above solution and stir at 40°C for 1 hour, after filtering, washing, and drying, a product with a double-pore structure is obtained. filter cake of mesoporous material;

[0092] Concentration is that the water glass of 15% by weight and the sulfuric acid solution of 12% by weight are mixed uniformly by water glass...

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Abstract

The invention discloses a spherical montmorillonite mesoporous composite carrier and a preparation method thereof, a supported polyethylene catalyst, a preparation method thereof and the application of the catalyst in catalytic reactions. The spherical montmorillonite mesoporous composite carrier contains montmorillonite and silica gel, and the average particle diameter of the spherical montmorillonite mesoporous composite carrier is 30-60 microns, the specific surface area is 200-650 square meters per gram, and the pores The volume is 0.5-1.5 ml / g, the pore size distribution is a bimodal distribution, and the most probable pore sizes corresponding to the bimodal are 9-12 nanometers and 15-30 nanometers respectively. In addition, the supported polyethylene catalyst provided by the invention has better catalytic performance, and when the catalyst is used to catalyze the polymerization reaction of ethylene, it has higher catalytic activity.

Description

technical field [0001] The invention relates to a spherical montmorillonite mesoporous composite carrier, a preparation method of a spherical montmorillonite mesoporous composite carrier, a spherical montmorillonite mesoporous composite carrier prepared by the method, and a loaded polyethylene Catalyst, a preparation method of a supported polyethylene catalyst, and the application of the supported polyethylene catalyst in catalytic reactions. Background technique [0002] In 1992, Mobile Company synthesized a highly ordered structured mesoporous material with high specific surface area, regular pore structure and narrow pore size distribution, making mesoporous materials widely used in catalysis, separation, medicine and other fields. attention (Beck J S, Vartuli J C, Roth W J, et al. J. Am. Chem. Soc., 1992, 114 (27): 10834-10843), in 1998 Zhao Dongyuan and others synthesized a new type of material - mesoporous Material SBA-15, the material has a highly ordered mesoporous ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F4/02C08F110/02C08F4/643
Inventor 亢宇张明森王洪涛
Owner CHINA PETROLEUM & CHEM CORP