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Silicon-aluminum material, preparation method and applications thereof

A silicon-aluminum material, aluminum source technology, applied in chemical instruments and methods, catalytic cracking, metal/metal oxide/metal hydroxide catalysts, etc. The problems of friendliness, increased preparation cost, etc., to achieve the effect of enhanced pore accessibility, good hydrothermal stability, and large pore size

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. Some templates are not friendly to the environment, which to a certain extent This hinders the industrial application of ordered mesoporous materials, especially in the process of catalytic cracking reaction

Method used

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  • Silicon-aluminum material, preparation method and applications thereof
  • Silicon-aluminum material, preparation method and applications thereof
  • Silicon-aluminum material, preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This example illustrates the silicon-aluminum material provided by the present invention and its preparation process.

[0030] At room temperature the water glass solution (concentration 80gSiO 2 / L) is placed in a beaker, drip ammonia water (content 17%) under stirring, after continuing to stir for 10 minutes, press Al under vigorous stirring 2 o 3 : SiO 2 = 0.5:1 ratio will Al 2 (SO 4 ) 3 Solution (concentration 90gAl2 o 3 / L) 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: ammonium salt: H 2 The weight ratio of O=1:0.8:10 was exchanged at 60° C. for 1 hour, filtered and washed with water to obtain a silicon-aluminum material sample provided by the present invention, which was designated as HS-1.

[0031] The X-ray diffraction spectrum of sample HS-1 is shown in figure 1 , figure 1 Among th...

Embodiment 2

[0035] This example illustrates the silicon-aluminum material provided by the present invention and its preparation process.

[0036] The measured water glass solution (concentration 80gSiO 2 / L) placed in a beaker and heated up to 40°C, under stirring, a quantitative concentration of 1M sodium hydroxide solution was added therein, and after stirring for 10 minutes, press Al 2 o 3 : SiO 2 = 0.4:1 ratio will 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 a constant temperature for 1 hour; filter the resulting solid precipitate on a dry basis: ammonium salt: H 2 The weight ratio of O=1:0.8:12 was exchanged at 70°C for 0.5 hours, filtered and washed with water, and the ammonium exchange was repeated once. After filtering, the silicon-aluminum material sample provided by the present invention was obtained, which was designated as HS-2.

[0037] The X-ray diffraction spe...

Embodiment 3

[0041] This example illustrates the silicon-aluminum material provided by the present invention and its preparation process.

[0042] 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 , by Al under vigorous stirring 2 o 3 : SiO 2 =0.6:1 ratio will 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: ammonium salt: H 2 The weight ratio of O=1:0.4:10 was exchanged at 50° C. for 1 hour, filtered and washed with water to obtain a silicon-aluminum material sample provided by the present invention, which was designated as HS-3.

[0043] The ...

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Abstract

The invention relates to a silicon-aluminum material, wherein the chemical composition measured through an XRF method is (0-0.3)Na2O.(50-80)SiO2.(20-50)Al2O3 based on the weight of the oxide, only theone diffuse diffraction peak appears at 25-27 DEG in the XRD spectrum of the silicon-aluminum material, the probable pore diameter is 20-50 nm, x / y is 0.55-0.75, x represents the Si / Al atomic ratio value measured through an XPS method, and y represents the Si / Al atomic ratio value measured through an XRF method. The silicon-aluminum material of the present invention can be used in petrochemical processes, and has advantages of strong pore channel accessibility good hydrothermal stability and good cracking performance in the being applied as the catalytic material.

Description

technical field [0001] The invention relates to a silicon-aluminum material, a preparation method and an application thereof, more specifically a silicon-alumina material with a mesopore diameter, a preparation method and an application thereof. 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 follow the carbanion reaction mechanism, so it is usually necessary to use catalytic materials with higher acidity, especially B acid centers, in the reaction process. [0003] I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/04B01J35/10C10G11/04
CPCC10G11/04B01J23/002B01J23/04B01J2523/00B01J35/612B01J35/613B01J35/647B01J35/615B01J2523/12B01J2523/31B01J2523/41
Inventor 郑金玉王成强罗一斌
Owner CHINA PETROLEUM & CHEM CORP
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