Porous material and preparation method and application thereof

A porous material and slurry technology, applied in chemical instruments and methods, catalyst carriers, catalysts for physical/chemical processes, etc., can solve the problem of catalyst carrier specific surface area, pore volume reduction, poor thermal stability of catalyst carrier, unfavorable active component dispersion, etc. problem, to achieve the effect of strong particle size controllability, good mechanical stability, and high anti-sintering effect

Pending Publication Date: 2020-09-29
SHENYANG SANJUKAITE CATALYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, the technical problem to be solved in the present invention is that the catalyst carrier prepared by the existing preparation method has poor thermal stability, and it is easy to cause the specific surface area and pore volume of the catalyst carrier to decrease in a high-temperature environment, and the pore diameter becomes larger, and the existing carrier It is not conducive to the dispersion of active components and affects the activity of catalysts when applied to catalysts, so as to provide a porous material and its preparation method and application

Method used

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  • Porous material and preparation method and application thereof
  • Porous material and preparation method and application thereof
  • Porous material and preparation method and application thereof

Examples

Experimental program
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Embodiment 1

[0048] This embodiment provides a method for preparing a porous material, comprising the following steps:

[0049] (1) Weigh sodium silicate nonahydrate (Na 2 SiO 3 9H 2 (0) 912.28g, add 9122.8g of n-propanol and mix, and stir at 40°C for 70min to obtain a silicon-containing mixture;

[0050] (2) Weighing 142.9g mass fraction is 70% nitric acid solution (containing 100g HNO 3 ), added to the silicon-containing mixture in step (1), and stirred at 60° C. for 90 min to obtain a silicon-containing slurry;

[0051] (3) Weigh 342.43 g of aluminum sulfate, add it to the silicon-containing slurry in step (2) and mix, and stir at 50° C. for 70 minutes to obtain a silicon-aluminum slurry;

[0052] (4) Weigh 3723.60 g of P123 polymer template agent and add it to the silicon-aluminum slurry;

[0053] (5) take by weighing sodium nitrate 4.25g, it is mixed with saturated aqueous solution, this aqueous solution of sodium nitrate is dripped (controlling rate of addition is 2ml / min) in th...

Embodiment 2

[0056] This embodiment provides a method for preparing a porous material, comprising the following steps:

[0057] (1) Weigh 833.32g of ethyl orthosilicate, add 49999g of n-propanol and mix, and stir at 45°C for 65min to obtain a silicon-containing mixture;

[0058] (2) Weighing 91.8g mass fraction is 98% sulfuric acid solution (containing 90g H 2 SO 4 ), added to the silicon-containing mixture in step (1), and stirred at 65° C. for 70 min to obtain a silicon-containing slurry;

[0059] (3) Weigh 213.00 g of aluminum nitrate, add it to the silicon-containing slurry in step (2) and mix, and stir at 50° C. for 70 minutes to obtain a silicon-aluminum slurry;

[0060] (4) Weigh 3723.60 g of PVP polymer template agent and add it to the silicon-aluminum slurry;

[0061] (5) Take by weighing sodium bicarbonate 8g, it is mixed with saturated aqueous solution, this sodium bicarbonate aqueous solution is dripped (control drop rate is 3ml / min) in the silicon-aluminum slurry, then adju...

Embodiment 3

[0064] This embodiment provides a method for preparing a porous material, comprising the following steps:

[0065] (1) Weigh 904.15 g of ethyl orthosilicate, add 9122.8 g of n-propanol to mix, and stir at 50°C for 60 minutes to obtain a silicon-containing mixture;

[0066] (2) Weighing 142.9g mass fraction is 70% nitric acid solution (containing 100g HNO 3 ), added to the silicon-containing mixture in step (1), and stirred at 70° C. for 60 min to obtain a silicon-containing slurry;

[0067] (3) Weigh 342.43 g of aluminum sulfate, add it to the silicon-containing slurry in step (2) and mix, and stir at 60° C. for 60 minutes to obtain a silicon-aluminum slurry;

[0068] (4) Weigh 2936.12 g of the P127 polymer template and add it to the silicon-aluminum slurry;

[0069] (5) take by weighing sodium carbonate 8g, it is mixed with saturated aqueous solution, this sodium carbonate aqueous solution is dripped (controlling rate of addition is 2ml / min) in the silicon-aluminum slurry, ...

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Abstract

The invention belongs to the technical field of catalysts, and particularly relates to a porous material and a preparation method and application thereof. The preparation method of the porous materialprovided by the invention comprises the following steps: mixing and stirring silicon-containing slurry and an aluminum-containing compound to obtain silicon-aluminum slurry; adding a template agent and an alkali metal and/or alkaline earth metal compound into the silicon-aluminum slurry, carrying out stirring and aging to obtain aged slurry; and carrying out centrifugal separation on the aged slurry to obtain a solid crude product, and drying and roasting the solid crude product to obtain the porous material. According to the preparation method of the porous material provided by the invention, the pore diameter, specific surface area and pore volume of the material can be greatly improved, and the catalytic activity and stability of the material can also be improved.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a porous material and its preparation method and application. Background technique [0002] The petrochemical industry is an important foundation for the prosperity and development of the modern economy and society, among which fossil energy such as natural gas, oil, and coal is the material basis for the development and progress of the modern petrochemical industry. Due to the limitation of fossil energy and its important position in social and economic development, it is of great significance to scientifically and rationally exploit and utilize it. After years of practical research, it has been found that natural gas and oilfield gas can be converted into alkanes, olefins and other chemicals through catalytic reactions. The product has important research value and social benefits, among which the catalyst undoubtedly plays an important role in the catalytic reacti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/08B01J35/10B01J32/00
CPCB01J21/08B01J35/1019B01J35/1061B01J35/1042B01J35/1038
Inventor 单红飞景云峰迟莹张宗柏董娇
Owner SHENYANG SANJUKAITE CATALYST
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