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Supported catalyst, preparation method and application thereof and propylene preparation method using propane dehydrogenation

A supported catalyst and catalyst technology, applied in catalyst activation/preparation, chemical instruments and methods, chemical elements of heterogeneous catalysts, etc., can solve the problems of uneven dispersion of active metal components, complex preparation process, etc. Good performance, simple preparation process and high propylene selectivity

Active Publication Date: 2018-11-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of complex preparation process and uneven dispersion of active metal components in the existing dehydrogenation catalyst, and provide a supported catalyst and its preparation method and application

Method used

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  • Supported catalyst, preparation method and application thereof and propylene preparation method using propane dehydrogenation
  • Supported catalyst, preparation method and application thereof and propylene preparation method using propane dehydrogenation
  • Supported catalyst, preparation method and application thereof and propylene preparation method using propane dehydrogenation

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Embodiment approach

[0026] According to a preferred embodiment of the present invention, the process of mixing and contacting includes: (1) Combining cetyltrimethylammonium bromide (CTAB), polyethylene glycol octylphenyl ether (Triton X -100) and hydrochloric acid are stirred at a temperature of 25-60°C to dissolve; (2) the solution obtained in step (1) and the silicate are stirred at a temperature of 25-60°C for 10-72 hours, and then stand for 10-72 hours.

[0027] In the present invention, the preparation method of the carrier preferably further includes washing and drying processes after the filtration. The washing and drying process can be a conventional choice in the field, and will not be repeated here.

[0028] In the present invention, the template agent can be removed by washing and / or calcination. The washing can be water washing and / or alcohol washing, and the washing and removing template agent conditions include: the temperature can be 90-120°C, and the time can be 10-40 hours. Accordin...

Embodiment 1

[0059] This example is used to illustrate the supported catalyst provided by the present invention, its preparation method, and the method for preparing propylene from propane dehydrogenation

[0060] (1) Preparation of carrier

[0061] 1.5 grams of CTAB (hexadecyl trimethyl ammonium bromide) and 1.5 ml of polyethylene glycol octyl phenyl ether (Triton-X100) were added to 29.6 grams of 37 wt% concentrated hydrochloric acid and 75 grams In hydrochloric acid composed of water, mix and stir at 40°C until CTAB is completely dissolved; then add 4.35 g of ethyl orthosilicate to the above solution, stir at 40°C for 15 minutes, and stand at 40°C for 24 hours. After filtering, washing and drying, the original powder mesoporous material is obtained. The raw powder mesoporous material is calcined at 600° C. for 24 hours to remove the template agent, and spherical mesoporous material A1 is obtained.

[0062] The spherical mesoporous material A-1 was characterized by X-ray diffraction, transmis...

Embodiment 2

[0073] This example is used to illustrate the supported catalyst provided by the present invention, its preparation method, and the method for preparing propylene from propane dehydrogenation

[0074] (1) Preparation of carrier

[0075] 1.125 grams of CTAB (hexadecyl trimethyl ammonium bromide) and 3.75 ml of polyethylene glycol octyl phenyl ether (Triton-X100) were added to 20.6 grams of 37 wt% concentrated hydrochloric acid and 62.2 grams In hydrochloric acid composed of water, mix and stir at 40°C until CTAB is completely dissolved; then add 4.35 g of ethyl orthosilicate to the above solution, stir at 40°C for 15 minutes to dissolve, and then stand at 40°C for 24 hour. After filtering, washing and drying, the original powder mesoporous material is obtained. The raw powdered mesoporous material is washed with ethanol under reflux conditions at 100°C for 24 hours to remove the template agent to obtain spherical mesoporous material A2.

[0076] Spherical mesoporous material A2 has...

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Abstract

The invention relates to the field of catalysts and discloses a supported catalyst, a preparation method thereof, application of the supported catalyst in propane dehydrogenation reaction for preparing propylene, and a propylene preparation method using propane dehydrogenation. The supported catalyst comprises a supporter and a platinum component, a tin component and a sodium component which are supported on the supporter, wherein the supporter is a spherical mesoporous material, the average particle size of the spherical mesoporous material is 3-20 micrometers, the specific surface area of the spherical mesoporous material is 1000-2000m<2> / g, the pore volume of the spherical mesoporous material is 0.5-1.5ml / g, and the pore diameter of the spherical mesoporous material is 1-3 nanometers. By using the supported catalyst to catalyze the propane dehydrogenation reaction for preparing the propylene, high propylene conversion rate is achieved, and high propylene selectivity is achieved.

Description

Technical field [0001] The invention relates to the field of catalysts, in particular to a supported catalyst, a method for preparing a supported catalyst, the application of the supported catalyst in the reaction of propane dehydrogenation to propylene, and a method for preparing propylene by propane dehydrogenation . Background technique [0002] Propylene is the basic raw material of petrochemical industry, mainly used to produce polypropylene, acrylonitrile, acetone, propylene oxide, acrylic acid and butanol. Half of the propylene supply comes from refinery by-products, and about 45% comes from steam cracking, with a small amount of other alternative technologies. In recent years, the demand for propylene has increased year by year, and traditional propylene production can no longer meet the demand for propylene in the chemical industry. Therefore, increasing the production of propylene has become a major research focus. Among them, the dehydrogenation of propane to propyle...

Claims

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Application Information

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IPC IPC(8): B01J23/62B01J35/10B01J35/08B01J37/02B01J37/08C07C5/333C07C11/06
CPCC07C5/3332B01J23/002B01J23/626B01J37/0209B01J37/08B01J2523/00B01J35/51B01J35/618B01J35/60B01J35/638B01J35/643B01J35/635B01J35/647C07C11/06B01J2523/12B01J2523/41B01J2523/43B01J2523/828Y02P20/52
Inventor 亢宇刘红梅张明森
Owner CHINA PETROLEUM & CHEM CORP
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