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A kind of preparation method of silicon aluminum catalytic material

A catalytic material, silicon-alumina technology, applied in the field of preparation of silicon-alumina catalytic materials, can solve the problems of increased preparation cost, unfriendly templating agent, hindering the industrial application of ordered mesoporous materials, etc.

Active Publication Date: 2020-10-27
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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  • A kind of preparation method of silicon aluminum catalytic material
  • A kind of preparation method of silicon aluminum catalytic material
  • A kind of preparation method of silicon aluminum catalytic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This example illustrates the preparation method provided by the present invention.

[0026] A certain amount of water glass solution (concentration 100gSiO 2 / L) placed in a beaker, heated to 50°C, and added with 1M sodium hydroxide solution under stirring, and after stirring for 10 minutes, the AlCl 3 Solution (concentration 60gAl 2 o 3 / L) to add and adjust the final pH value of the slurry to 10.5, then stir at a constant temperature at 50°C for 4 hours; filter the resulting solid precipitate according to the dry basis of the precipitate: H2 SO 4 :H 2 The weight ratio of O=1:0.12:10 was contacted with dilute sulfuric acid at room temperature for 1 hour, filtered, washed with water, and dried to obtain a silicon-aluminum catalytic material, which was designated as HFA-1.

[0027] The X-ray diffraction spectrum of HFA-1 is as follows figure 1 As shown, 5 characteristic diffraction peaks appear at 14°, 28°, 38.5°, 49° and 65°, which is a typical pseudo-boehmite stru...

Embodiment 2

[0029] This example illustrates the preparation method provided by the present invention.

[0030] Take a certain amount of tetraethoxy silicon (TEOS) and place it in a beaker, add a small amount of deionized water to stir, control the temperature at 30°C, then slowly drop a certain amount of sodium hydroxide solution into it, stir for 30 minutes, and then Add AlCl with vigorous stirring 3 solution and control the final pH value of the slurry to 9.0, then raise the temperature to 60°C and stir at a constant temperature for 2 hours; after filtration, the obtained solid precipitate is calculated on a dry basis of the precipitate: HCl: H 2 The weight ratio of O=1:0.05:10 was contacted with dilute hydrochloric acid at 50°C for 0.5 hours, filtered, washed with water, and dried to obtain a silicon-aluminum catalytic material, which was designated as HFA-2.

[0031] The X-ray diffraction pattern of HFA-2 has figure 1 As shown in the features, five characteristic diffraction peaks a...

Embodiment 3

[0033] This example illustrates the preparation method provided by the present invention.

[0034] Get a certain amount of tetraethoxy silicon (TEOS) at room temperature and place in the beaker and add a small amount of deionized water to stir, then quantitative sodium metaaluminate solution (concentration 102gAl 2 o 3 / L, caustic ratio 2.5) slowly drop into it, after stirring for 30 minutes, add Al under vigorous stirring 2 (SO 4 ) 3 Solution (concentration 50gAl 2 o 3 / L) and control the end point pH of the slurry to be 8.0, then heat up to 60°C and stir at a constant temperature for 6 hours; filter the resulting solid precipitate according to the dry basis of the precipitate: HCl: H 2 The weight ratio of O=1:0.08:12 was contacted with dilute hydrochloric acid at 40°C for 1 hour, filtered, washed with water, and dried to obtain a silicon-aluminum catalytic material, which was designated as HFA-3.

[0035] The X-ray diffraction pattern of HFA-3 has figure 1 As shown in...

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Abstract

A method for preparing silicon-aluminum catalytic materials, which is characterized by: after thoroughly mixing the silicon source and the alkali solution at room temperature to 60°C, add the aluminum source under stirring, and adjust the resulting slurry until the end-point pH value is between 8 and 10.5. time, and then undergo dynamic aging treatment at a constant temperature of 40 to 80°C for 1 to 8 hours, wash and filter, and combine the obtained solid precipitate and dilute acid solution according to the dry basis of the solid precipitate: acid: H 2 The weight ratio of O=1: (0.02~0.20): (5~30) is contacted at room temperature to 60°C for more than 0.2 hours, filtered and dried, where the weight ratio of aluminum source to silicon source (1.2~5.7): 1. The aluminum source is measured as alumina, and the silicon source is measured as silicon oxide; the silicon-alumina catalytic material has the characteristics of aluminum-rich surface and has a good effect in converting heavy oil.

Description

technical field [0001] The present invention relates to a preparation method of a silicon-alumina catalytic material, in particular to a silicon-alumina catalytic material having a pseudo-boehmite crystal phase structure, a typical mesoporous structure, an aluminum-rich surface, and an outstanding heavy oil conversion ability method of preparation. 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 us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/06B01J35/10C10G11/05
CPCC10G11/05B01J29/061B01J35/60B01J35/651B01J35/615
Inventor 郑金玉王成强罗一斌
Owner CHINA PETROLEUM & CHEM CORP