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A kind of catalytic material and preparation method thereof

A catalytic material and pseudo-boehmite technology, applied in the field of catalytic materials and their preparation, can solve the problems of large steric hindrance effect, poor cracking activity, high price and the like

Active Publication Date: 2021-12-17
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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  • A kind of catalytic material and preparation method thereof
  • A kind of catalytic material and preparation method thereof
  • A kind of catalytic material 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] 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.

[0034] 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 hour...

Embodiment 2

[0040] This example illustrates the catalytic material of the present invention and its preparation process.

[0041] Prepare NaY molecular sieve gel according to the molar ratio of NaY molecular sieve gel in Example 1, and the same feeding sequence, crystallize the gel at 100 ° C for 15 hours, then filter and wash the crystallized slurry, and Oven drying at 120° C. for 10 hours to obtain NaY molecular sieves.

[0042] Add water to the obtained NaY molecular sieve dry powder again, stir evenly, then heat up to 30°C, stir vigorously, and at the same time, Al 2 (SO 4 ) 3 Solution (concentration 50gAl 2 o 3 / L) and ammoniacal liquor (massfraction 25%) flow into wherein, carry out contact reaction, and the pH value of control slurry system is 10.0, after reacting certain hour, according to the Al in the aluminum sulfate solution used 2 o 3 by weight, according to SiO 2 :Al 2 o 3 =1:2 weight ratio, tetraethoxy silicon was added to the above reaction slurry, and continued t...

Embodiment 3

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

[0048] 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.

[0049] 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, a...

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Abstract

A catalytic material, characterized in that the XRD spectrogram of the catalytic material shows both a FAU crystal phase structure and a pseudo-boehmite amorphous phase structure, and the pseudo-boehmite amorphous phase structure is along the FAU crystal phase The edge of the structure grows, and the two structures are connected together; in the Raman spectrum, a / b=1.5~10, where a means that the Raman shift is 500cm ‑1 The peak intensity of the spectrum peak, b means that the Raman shift is 350cm ‑1 The peak intensity of the spectrum.

Description

technical field [0001] The present invention relates to a catalytic material and a preparation method thereof. Further, the present invention relates to a catalytic material having a composite structure of a microporous crystalline structure and a mesoporous amorphous structure and a preparation method thereof. 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 catalytic materials with stron...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/80B01J35/10C10G11/05
CPCC10G11/05B01J29/80B01J2229/32B01J35/617B01J35/638B01J35/613B01J35/635B01J35/633B01J35/615B01J35/647
Inventor 郑金玉王成强罗一斌
Owner CHINA PETROLEUM & CHEM CORP