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Preparation method of multi-metal modified composite material

A composite material, multi-metal technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of poor cracking activity, high price, large steric hindrance effect, etc., and achieve reaction performance. The effect of promoting and improving acid distribution

Active Publication Date: 2020-10-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this molecular sieve is that it needs to use an expensive template agent, and the pore size is only about 2.7nm. It still has a large steric hindrance effect on the cracking reaction of macromolecules. The structure is easy to collapse under high temperature hydrothermal conditions, and the cracking activity is low Difference

Method used

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  • Preparation method of multi-metal modified composite material
  • Preparation method of multi-metal modified composite material
  • Preparation method of multi-metal modified composite material

Examples

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preparation example Construction

[0040] The preparation process of the directing agent adopted in the embodiment is: 5700g water glass (Changling Catalyst Company provides, SiO 2 261g / L, modulus 3.31, density 1259g / L) is put into the beaker, add 4451g perbasic sodium metaaluminate (provided by Changling Catalyst Company, Al 2 o 3 39.9g / L, Na 2 O279.4g / L, density 1326g / L) and aged at 30°C for 18 hours, a molar ratio of 16.1Na 2 O: Al2 o 3 :15SiO2 2 :318.5H 2 O's directing agent.

[0041] In each example, the RE of the material 2 o 3 , MgO, Na 2 O, Al 2 o 3 , SiO 2 The content is determined by X-ray fluorescence method (see "Petrochemical Analysis Method (RIPP Experimental Method)", edited by Yang Cuiding, etc., Science Press, published in 1990).

[0042] The phase, unit cell constant and crystallinity were determined by X-ray diffraction method. The crystallinity is determined according to the industry standards SH / T 0340-92 and SH / T 0339-92 of China Petroleum & Chemical Corporation, and the cry...

Embodiment 1

[0049] According to 8.5SiO 2 :Al 2 o 3 : 2.65Na 2 O: 210H 2 The molar ratio of NaY molecular sieve gel of O is mixed in sequence with water glass, aluminum sulfate, sodium metaaluminate, guiding agent and deionized water and stirred for 1 hour, wherein the mass ratio of guiding agent is 5%. , the gel was crystallized at 100° C. for 30 hours, and then the crystallized slurry was filtered and washed, and dried in an oven at 120° C. for 10 hours to obtain NaY molecular sieves.

[0050] Add water to the obtained NaY molecular sieve dry powder again, stir evenly, then raise the temperature to 50°C, stir vigorously, and at the same time, add AlCl 3 Solution (concentration 60gAl 2 o 3 / L) and NaAlO 2 Solution (concentration 102gAl 2 o 3 / L) and flow into it, carry out contact reaction, and control the pH value of slurry system to be 8.5, after reacting certain hours, according to the total Al in aluminum chloride solution used and sodium metaaluminate solution 2 o 3 by wei...

Embodiment 2

[0056] According to the gel feeding molar ratio of NaY molecular sieve described in Example 1, water glass, directing agent, aluminum sulfate, sodium metaaluminate and required deionized water were mixed in sequence and stirred for 1 hour, wherein the directing agent The mass ratio was 6%. The gel was crystallized at 100° C. for 25 hours, and then the crystallized slurry was filtered and washed, and dried in an oven at 120° C. for 10 hours to obtain NaY molecular sieves.

[0057] The obtained NaY molecular sieve dry powder was re-added with water to make a slurry, stirred evenly and then heated to 40°C, under vigorous stirring, at the same time, the Al 2 (SO 4 ) 3 Solution (concentration 50gAl 2 o 3 / L) and NaAlO 2 Solution (concentration 102gAl 2 o 3 / L) and flow into it, carry out the contact reaction, and control the pH value of the slurry system to be 9.0, after reacting for a certain period of time, according to the total Al in the aluminum sulfate solution used and...

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Abstract

The invention discloses a preparation method of a multi-metal modified composite material. The method comprises a process of modifying a porous material by rare earth and magnesium. The porous material has two structures which are an FAU crystalline phase structure and a pseudo-boehmite amorphous phase structure at the same time, ordered diffraction stripes of an FAU crystal part and a disorderedstructure of a pseudo-boehmite part exist, and the disordered structure is derived and grown along the edges of the ordered diffraction stripes, and the two structures are effectively combined together to form a microporous-mesoporous composite structure; a / b of a Raman spectrum is equal to 1.5-10, and probable pore distribution occurs at the wavelength of 3-4nm, 8-20nm and 18-40nm. The compositematerial prepared by the method contains microporous and mesoporous structures at the same time, the acid distribution is further improved through the modification effect of rare earth and magnesium,and the reaction performance is promoted.

Description

technical field [0001] The present invention relates to a kind of preparation method of the composite material of multi-metal modification, specifically the present invention relates to a kind of compound material containing Y-type molecular sieve and gamma-Al at the same time 2 o 3 Structured and modified composites with various metals. Background technique [0002] Catalytic cracking is a very important process in the petroleum refining process. It is widely used in the petroleum processing industry and occupies a pivotal position in the refinery. In the catalytic cracking process, heavy fractions such as vacuum distillates or residues of heavier components are reacted in the presence of a catalyst to convert gasoline, distillate and other liquid cracking products and lighter gaseous cracking of up to four carbons product. The catalytic cracking reaction process follows the carbon ion reaction mechanism, so it is necessary to use acidic catalytic materials, especially c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/08B01J35/10C10G11/05
CPCB01J29/088C10G11/05B01J35/617B01J35/635B01J35/633B01J35/615Y02P20/52
Inventor 郑金玉王成强罗一斌满征
Owner CHINA PETROLEUM & CHEM CORP
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