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Porous material and preparation method thereof

A porous material and microporous technology, applied in the field of porous materials, can solve the problems of affecting the cracking reaction of macromolecules, small pores, etc., to achieve the effect of improving the benefit space, small particle size, and reducing production costs

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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  • Porous material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This example illustrates the preparation of porous materials provided by the present invention.

[0034] Take Al 2 (SO 4 ) 3 Solution (concentration 50gAl 2 o 3 / L) and ammoniacal liquor (massfraction 25%) are reaction raw materials, under vigorous stirring, Al 2 (SO 4 ) 3 Solution and ammoniacal liquor are added simultaneously, and flow into gel, and the temperature that controls to become glue slurry is 50 ℃, and the pH value of glue into slurry is 9.0, and NaY crystallization mother liquor (concentration 50gSiO 2 / L, suspended solids concentration 100mg / L) is added in parallel flow in proportion to achieve online addition, collect a certain amount of mixed slurry and heat it up to 60°C for 2 hours; : Ammonium salt: H 2 The weight ratio of O=1:0.8:12 was exchanged at 55° C. for 1 hour, filtered and washed with water to obtain the porous material provided by the present invention, which was designated as APM-Z-1.

[0035] The main structure of APM-Z-1 is the p...

Embodiment 2

[0037] This example illustrates the preparation of porous materials provided by the present invention.

[0038] Take Al 2 (SO 4 ) 3 The solution and ammonia water are the reaction raw materials, and the Al 2 (SO 4 ) 3 Solution and ammoniacal liquor are added simultaneously, and flow into gel, and control gelation temperature is 35 ℃, and the pH value of gelation system is 8.5, and NaY water washing filtrate (concentration 40gSiO 2 / L, suspended solids concentration 5400mg / L) is added in parallel flow in proportion to achieve online addition, after collecting a certain amount of mixed slurry, it is heated to 50°C and aged for 2 hours; : Ammonium salt: H 2 The weight ratio of O=1:0.4:10 was exchanged at 50°C for 0.5 hours, filtered and washed with water, and the ammonium exchange was repeated once. After filtering, the porous material provided by the present invention was obtained, which was designated as APM-Z-2.

[0039] The main structure of APM-Z-2 is pseudo-boehmite ...

Embodiment 3

[0045] This example illustrates the preparation of porous materials provided by the present invention.

[0046] Take Al 2 (SO 4 ) 3 solution and NaAlO 2 Solution (concentration 102gAl 2 o 3 / L) as the reaction raw material, NaAlO at room temperature 2 solution with Al 2 (SO 4 ) 3 The solution co-flows into a gel, and the pH value of the gel is controlled at 10.5, and the mixed solution (concentration 34gSiO 2 / L, suspended solids concentration 2100mg / L) is added in parallel flow in proportion to achieve online addition, after collecting a certain amount of mixed slurry, it is heated to 70°C and aged for 1 hour; after filtration, the obtained solid precipitate is calculated on a dry basis : Ammonium salt: H 2 The weight ratio of O=1:0.5:10 was exchanged at 60°C for 0.5 hours, filtered and washed with water, and the ammonium exchange was repeated once. After filtration, the porous material provided by the present invention was obtained, which was designated as APM-Z-3....

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Abstract

The invention relates to a porous material, which is characterized in that it has a pseudoboehmite crystal phase structure and a FAU crystal phase structure, the ratio of the micropore specific surface area to the total specific surface area is ≯8%, and the average pore diameter is 8-15 nm. The particle size distribution is D(V,0.5)≤4μm, D(V,0.9)≤12μm. The material has a small particle size and excellent cracking properties.

Description

technical field [0001] The invention relates to a porous material and a preparation method thereof, in particular to a porous material doped with a small amount of Y-type molecular sieve, with obvious mesopore characteristics, strong cracking ability and smaller particle size. 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 oil or residues of heavier components undergo cracking reactions in the presence of catalysts to produce liquefied gas, gasoline, diesel and other products to meet market demand. Catalytic materials with 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 acidity and high cracking reactivity, and are widely used in petroleum r...

Claims

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Application Information

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IPC IPC(8): C01B39/24
Inventor 郑金玉王成强罗一斌
Owner CHINA PETROLEUM & CHEM CORP
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