Preparation method of porous material

A porous material and microporous technology, which is applied in the field of porous materials, can solve the problems of small pores and affect the cracking reaction of macromolecules, and achieve the effect of reducing the cost of preparation, improving the benefit space, 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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  • Preparation method of porous material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This example illustrates the preparation method of the porous material provided by the present invention.

[0032] 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) was added in parallel flow in proportion, collected a certain amount of mixed slurry and then heated to 60°C for aging for 2 hours; after filtration, the obtained solid precipitate was calculated according to the dry basis of the precipitate: HCl: H 2 The weight ratio of O=1:0.05:10 was exchanged at room temperature for 0.5 hours, filtered and washed with water, and the acid exchange was repeated o...

Embodiment 2

[0035] This example illustrates the preparation method of the porous material provided by the present invention.

[0036] 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 matter concentration 5400mg / L) is added in parallel flow in proportion, after collecting a certain amount of mixed slurry, it is warmed up to 50°C and aged for 2 hours; after filtering, the obtained solid precipitate is calculated on a dry basis: 2 SO 4 :H 2 The weight ratio of O=1:0.07:15 was exchanged at 40° C. for 0.5 hour, filtered and washed with water to obtain the porous material provided by the present invention, which was designated as APM-ZA-2.

[0037] The main structure of APM-ZA-2 is a pseudo-boehmite stru...

Embodiment 3

[0043] This example illustrates the preparation method of the porous material provided by the present invention.

[0044] 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 matter concentration 2100mg / L) was added in parallel flow in proportion, collected a certain amount of mixed slurry and then heated to 70°C for 1 hour aging; after filtering, the obtained solid precipitate was calculated as the dry basis of the precipitate: HCl: H 2 The weight ratio of O=1:0.07:10 was exchanged at 50°C for 20 minutes, filtered and washed with water, and the acid exchange was repeated once. After filtration, the porous material provided by the present invention was obtained, which was designated as APM-ZA-3.

[0045] The m...

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Abstract

The invention provides a preparation method of a porous material, which is characterized in that an aluminium source, alkali solution, NaY crystallization mother liquor and/or washing filtrate are mixed in a parallel flow mode to form glue, the glue is aged to obtain solid precipitates, and then the solid precipitates are subjected to acid mixed exchange sodium removal until sodium oxide content being smaller than 0.3%; the step of mixing to form the glue is carried out at the temperature ranging from the room temperature to 85 DEG C; in a mixing glue forming system, a pH value is controlled within a range of 7 to 11, and a weight ratio of SiO2 to Al2O3 is controlled within a range of 1:(1 to 9). The porous material obtained by adopting the method provided by the invention has the characteristics of a mesoporous, and is small in particle size and better in cracking performance.

Description

technical field [0001] The invention relates to a preparation method of a porous material, more specifically a porous material mixed with trace Y-type molecular sieves, smaller in particle size and stronger in cracking ability. 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 refining and processing industries. However, with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/24
Inventor 王成强郑金玉罗一斌
Owner CHINA PETROLEUM & CHEM CORP
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