Active porous catalytic material and preparation method thereof

A catalytic material and active technology, applied in the field of active porous catalytic materials and their preparation, can solve the problems of small pores and affect the cracking reaction of macromolecules, and achieve the effect of reducing the cost of preparation, increasing the benefit space, and strong cracking ability.

Active Publication Date: 2017-06-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although microporous molecular sieves have high cracking activity, their pores are small, which can significantly restrict the diffusion of macromolecules such as heavy oil or residual oil in their pores, which affects the cracking reaction of macromolecules.

Method used

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  • Active porous catalytic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This example illustrates the preparation of the active porous catalytic material provided by the present invention.

[0033] with Al 2 (SO 4 ) 3 Solution (concentration 50gAl 2 O 3 / L) and ammonia water (25% by mass) were used as the raw materials for the reaction, and the Al 2 (SO 4 ) 3 The solution and ammonia water are added at the same time, and they are co-flowed to form a gel. 2 / L, suspended solids concentration 100mg / L), then heat up to 60 ° C for ageing for 4 hours; after filtration, the obtained solid precipitate is precipitated according to the dry basis of the precipitate: ammonium salt: H 2 The weight ratio of O=1:1:10 is exchanged at 60° C. for 1 hour, filtered and washed with water, and the ammonium exchange is repeated once.

[0034] The main structure of APM-1 is pseudo-boehmite crystal phase structure, and there is a small amount of FAU structure of Y-type molecular sieve. Its X-ray diffraction spectrum is shown in figure 1 , the diffraction p...

Embodiment 2

[0036] This example illustrates the preparation of the active porous catalytic material provided by the present invention.

[0037] with Al 2 (SO 4 ) 3 The solution and ammonia water are used as the raw materials for the reaction, and the co-current gelation method is adopted, and the Al is mixed under vigorous stirring. 2 (SO 4 ) 3 The solution and ammonia water were mixed to form a gel, the gelling temperature was controlled to be 35°C, the pH value of the gel-forming system was 8.5, and an appropriate amount of NaY washing filtrate (concentration 40g SiO) was added after gelling for a certain period of time. 2 / L, suspended solids concentration 5400mg / L), then heated to 70 ℃ for 2 hours; after filtration, the obtained solid precipitate was filtered according to the dry basis of the precipitate: ammonium salt: H 2 The weight ratio of O=1:0.7:15 is exchanged at 50° C. for 0.5 hours, filtered and washed, and the ammonium exchange is repeated once.

[0038] The main struc...

Embodiment 3

[0044] This example illustrates the preparation of the active porous catalytic material provided by the present invention.

[0045] with Al 2 (SO 4 ) 3 Solution and NaAlO 2 Solution (concentration 102gAl 2 O 3 / L) is the raw material for the reaction, and NaAlO was stirred vigorously at 50 °C 2 solution added to Al 2 (SO 4 ) 3 Neutralize and gel in the solution, and the gel pH value is controlled at 10.5, and then the mixed solution of quantitative NaY crystallization mother liquor and washing filtrate (concentration 34gSiO) is added. 2 / L, suspended solids concentration 2100mg / L), and warmed up to 80 ℃ for 1 hour; after filtration, the obtained solid precipitate was filtered according to the dry basis of the precipitate: ammonium salt: H 2 The weight ratio of O=1:0.8:15 is exchanged at room temperature for 1 hour, filtered and washed to obtain the active porous catalytic material provided by the present invention, which is designated as APM-3.

[0046] The main stru...

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Abstract

The invention discloses an active porous catalytic material. The anhydrous chemical expression of the catalytic material is (0 to 0.3) Na2O.(10 to 50) SiO2.(50 to 90) Al2O3 according to the weight of an oxide; the average aperture is 8 to 15 nm, and the total specific surface area is 250 to 600 m<2> / g. The active porous catalytic material is characterized in that the active porous catalytic material is of a pseudo-boehmite crystal structure, and also contains an FAU crystal structure; the ratio of the micropore specific surface area is not greater than 8 percent in the total specific surface area. The material is excellent in cracking performance.

Description

technical field [0001] The invention relates to an active porous catalytic material and a preparation method thereof, and furthermore, the present invention relates to an active porous catalytic material with a pseudo-boehmite crystal phase structure and a preparation method thereof. Background technique [0002] Catalytic cracking is a very important process in the petroleum refining process and is widely used in the petroleum processing industry. In the catalytic cracking process, heavy fractions such as vacuum distillate or residues of heavier components undergo a cracking reaction in the presence of a catalyst to generate liquefied gas, gasoline, diesel and other products to meet market demand, which are usually required in the cracking reaction process. Catalytic materials with a certain acidity and higher cracking activity are used. Microporous molecular sieve materials have the characteristics of uniform pore size distribution, large specific surface area, strong aci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/24B01J29/08C10G11/02
CPCB01J29/084C01B39/24C01P2002/60C01P2002/72C01P2006/12C01P2006/16C10G11/05
Inventor 郑金玉王成强罗一斌
Owner CHINA PETROLEUM & CHEM CORP
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