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A kind of amorphous catalytic material with high B-acid center and preparation method thereof

A catalytic material and amorphous technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, catalytic cracking, etc., can solve problems such as hindering the industrial application of ordered mesoporous materials, increasing preparation costs, and unfriendly templating agents

Active Publication Date: 2021-04-06
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 amorphous catalytic material with high B-acid center and preparation method thereof
  • A kind of amorphous catalytic material with high B-acid center and preparation method thereof
  • A kind of amorphous catalytic material with high B-acid center and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This example illustrates the catalytic material of the present invention and its preparation process.

[0033] Add a small amount of deionized water in the beaker, heat up to 50°C, and mix the water glass solution (concentration 100g SiO 2 / L) and sodium metaaluminate solution (102gAl 2 o 3 / L, causticity ratio 2.45) join in the beaker and mix reaction at the same time, the adding of two kinds of materials uses peristaltic pump, the flow rate of control peristaltic pump is to guarantee that two kinds of materials are added in the same time, and pH value is 13.8; Then add AlCl 3 Solution (concentration 60gAl 2 o 3 / L) was added therein and the terminal pH value of the control slurry was 9.0, and the aging treatment was continued at 50° C. for 6 hours; 2 The weight ratio of O=1:0.5:10 was exchanged at 50°C for 0.5 hours, the exchange was repeated once, and the catalytic material obtained by filtering and washing with water was designated as HSB-1.

[0034] The X-ray...

Embodiment 2

[0042] This example illustrates the catalytic material of the present invention and its preparation process.

[0043] A small amount of deionized water was added to the beaker, and tetraethoxy silicon and sodium metaaluminate solution (41gAl 2 o 3 / L, caustic ratio 11.5) join in the beaker and mix reaction simultaneously, guarantee that two kinds of materials are added in the same time, and pH value is 13.4; Then Al 2 (SO 4 ) 3 Solution (concentration 90gAl 2 o 3 / L) into it and control the final pH value of the slurry to 10.5, heat up to 70°C and stir for 8 hours at a constant temperature for aging treatment; after filtering, the resulting solid precipitate is calculated on a dry basis of the precipitate: ammonium salt: H 2 The weight ratio of O=1:0.8:12 was exchanged at 60° C. for 0.5 hour, and the catalytic material obtained by filtering and washing with water was designated as HSB-2.

[0044] The X-ray diffraction spectrum of HSB-2 has figure 1 Features shown, with ...

Embodiment 3

[0047] This example illustrates the catalytic material of the present invention and its preparation process.

[0048] Add a small amount of deionized water into the beaker, heat up to 40 ° C, and mix the alkaline silica sol (concentration 21gSiO 2 / L, pH=10.0) and sodium metaaluminate solution (180gAl 2 o 3 / L, causticity ratio 1.65) join in the beaker and mix reaction simultaneously, guarantee that two kinds of materials are added in the same time, and pH value is 13.6; Then AlCl 3 Solution (concentration 60gAl 2 o 3 / L) into it and control the final pH value of the slurry to 8.5, heat up to 60°C and stir for 2 hours at a constant temperature for aging treatment; after filtration, the resulting solid precipitate is calculated on a dry basis of the precipitate: ammonium salt: H 2 The weight ratio of O=1:0.3:10 was exchanged at 60° C. for 1 hour, and the catalytic material obtained by filtering and washing with water was designated as HSB-3.

[0049] The X-ray diffraction ...

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Abstract

An amorphous catalytic material with a high B acid center, characterized in that the XRD spectrum of the catalytic material has a diffuse diffraction peak at a 2θ angle of 25° to 27°, and the B acid center measured by pyridine infrared at 350°C The ratio of the number to the number of L acid centers is greater than 0.250, and the chemical composition based on the weight of the oxide contains 50-80% of silicon and 20-50% of aluminum, and the specific surface area is ≯250m 2 / g, when the surface Al / Si atomic ratio measured by the XPS method is a, and the bulk Al / Si atomic ratio measured by the XRF method is b, a / b=1.1-1.6. The preparation method of the catalytic material is to firstly add silicon source and basic aluminum source into a container for reaction in a co-current manner, and then add acidic aluminum source and adjust the pH value. The catalytic material can be used as an active component or matrix of a catalyst in heavy oil conversion.

Description

technical field [0001] The invention relates to a catalytic material and a preparation method thereof, in particular the invention relates to an amorphous catalytic material and a preparation method 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 carbocation reaction mechanism, so it is usually necessary to use catalytic materials with higher acidity, especially Bronsted acid centers, in the reaction process. [0003] In the early catalytic crackin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/12B01J35/10B01J37/03B01J37/30B01J37/10C10G11/04
CPCB01J21/12B01J23/002B01J35/1019B01J35/1061B01J37/031B01J37/10B01J37/30C10G11/04
Inventor 郑金玉王成强罗一斌
Owner CHINA PETROLEUM & CHEM CORP