Amorphous silicon-aluminum catalytic material preparation method

A technology of amorphous silica-alumina and catalytic materials, applied in chemical instruments and methods, catalysts, hydrocarbon cracking and hydrocarbon production, etc., can solve problems such as increased preparation costs, unfriendly templating agents, and obstacles to the industrial application of ordered mesoporous materials , to achieve the effects of unobstructed channels, enhanced accessibility and excellent cracking performance

Active Publication Date: 2018-09-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the preparation process of ordered mesoporous materials, it is usually necessary to use templates, such as surfactants, polymer block copolymers, etc., and the preparation cost will increase accordingly.

Method used

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  • Amorphous silicon-aluminum catalytic material preparation method
  • Amorphous silicon-aluminum catalytic material preparation method

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0025] Example 1

[0026] This example illustrates the preparation method of the present invention.

[0027] At room temperature the water glass solution (concentration 80gSiO 2 / L) is placed in a beaker, dripped ammonia water (content 17%) under stirring, and after continuing to stir for 10 minutes, the Al 2 (SO 4 ) 3 Solution (concentration 90gAl 2 o 3 / L) to add and adjust the final pH value of the slurry to 8.5, raise the temperature to 50°C and stir at a constant temperature for 3 hours; filter the resulting solid precipitate according to the dry basis of the precipitate: HCl: H 2 The weight ratio of O=1:0.08:10 is contacted with dilute hydrochloric acid at 50°C for 0.5 hours. After filtering and washing, repeat the process of contacting with acid once. After filtering, dry the silicon-aluminum catalyst material, which is denoted as HSA- 1.

[0028] The X-ray diffraction pattern of HSA-1 is shown in figure 1 , where diffuse diffraction peaks appear around 25°-27°, ...

Example Embodiment

[0029] Example 2

[0030] This example illustrates the preparation method of the present invention.

[0031] The measured water glass solution (concentration 80gSiO 2 / L) placed in a beaker and heated to 40 ° C, under stirring, a quantitative concentration of 1M sodium hydroxide solution was added to it, and after continuing to stir for 10 minutes, the Al 2 (SO 4 ) 3 Solution (concentration 90gAl 2 o 3 / L) Add and adjust the final pH value of the slurry to 10.0, continue to heat up to 60°C and stir at constant temperature for 1 hour; filter the resulting solid precipitate according to the dry basis of the precipitate: H 2 SO 4 :H 2 The weight ratio of O=1:0.15:15 was contacted with dilute sulfuric acid solution at 40°C for 1 hour, filtered and washed with water, and then dried to obtain a silicon-aluminum catalytic material, which was designated as HSA-2.

[0032] The X-ray diffraction pattern of HSA-2 has figure 1 The characteristics shown, there are diffuse diffract...

Example Embodiment

[0033] Example 3

[0034] This example illustrates the preparation method of the present invention.

[0035] Put the measured amount of tetraethoxy silicon (TEOS) in the beaker and add a small amount of deionized water, stir and heat up to 50°C, then slowly add a quantitative concentration of 1M sodium hydroxide solution into it, and continue stirring for 30 minutes , Al(NO 3 ) 3 Solution (concentration 60gAl 2 o 3 / L) to add and adjust the final pH value of the slurry to 10.5, continue to heat up to 80°C and stir at a constant temperature for 2 hours; after filtering, the resulting solid precipitate is calculated on a dry basis of the precipitate: HCl: H 2 The weight ratio of O=1:0.06:10 was contacted with dilute hydrochloric acid at room temperature for 1 hour, filtered and washed with water, and then dried to obtain a silicon-aluminum catalytic material, which was designated as HSA-3.

[0036] The X-ray diffraction pattern of HSA-3 has figure 1 The characteristics sho...

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Abstract

The invention relates to an amorphous silicon-aluminum catalytic material preparation method, which comprises: placing a silicon source in a container, adding an alkali solution at a temperature froma room temperature to 60 DEG C under vigorous stirring, stirring uniformly, adding an aluminum source, adjusting the end point pH value of the slurry to 8-10.5, heating to a temperature of 40-80 DEG C, carrying out constant temperature treatment for 1-8 h, filtering, carrying out contact treatment on the obtained solid precipitate and a dilute acid solution, filtering, and drying. According to thepresent invention, the amorphous silicon-aluminum catalytic material has characteristics of typical amorphous structure, rich aluminum on the surface, good accessibility, large mesoporous pore size,high hydrothermal stability and good macromolecular cracking activity.

Description

technical field [0001] The present invention relates to a preparation method of an amorphous silicon-aluminum catalytic material, and furthermore, the present invention relates to a typical amorphous structure and surface aluminum-rich characteristics, large mesopore diameter, high hydrothermal stability and excellent A method for preparing a silicon-aluminum catalytic material with macromolecule cracking performance. Background technique [0002] As an important reaction process in petroleum refining and processing, fluid catalytic cracking has been widely used in petroleum processing industry and plays a pivotal role in refineries. In the process of catalytic cracking reaction, heavy distillate such as vacuum distillate oil or residue oil of heavier components undergoes cracking reaction in the presence of catalyst, and is converted into liquid cracking products such as gasoline and diesel oil and lighter gaseous cracking products. Catalytic cracking reaction Generally fo...

Claims

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Application Information

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IPC IPC(8): B01J29/06B01J35/10C07C4/06C07C15/085
CPCB01J29/061B01J35/10B01J35/1061C07C4/06C07C2529/06C07C15/085Y02P20/52
Inventor 郑金玉王成强罗一斌
Owner CHINA PETROLEUM & CHEM CORP
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