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Catalytic material containing rare earth and magnesium and preparation method thereof

A catalytic material and rare earth technology, applied in chemical instruments and methods, catalytic cracking, molecular sieve catalysts, etc., can solve the problems of large steric hindrance effect, high price, easy structure collapse, etc., and achieve the effect of promoting the conversion capacity of heavy oil

Pending 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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  • Catalytic material containing rare earth and magnesium and preparation method thereof
  • Catalytic material containing rare earth and magnesium and preparation method thereof
  • Catalytic material containing rare earth and magnesium and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0038] 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 O 279.4g / L, density 1326g / L) and aged at 30°C for 18 hours, a molar ratio of 16.1Na 2 O: Al 2 o 3 :15SiO2 2 :318.5H 2 O's directing agent.

[0039] The chemical composition of the porous material mesoporous layer in the examples was determined by X-ray photoelectron spectroscopy. Rare earth content and magnesium oxide content were measured by X-ray fluorescence method (see "Petrochemical Analysis Method (RIPP Experimental Method)", edited by Yang Cuiding et al., Science Press, published in 1990). 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...

Embodiment 1

[0043] Under vigorous stirring, mix water glass, aluminum sulfate, sodium metaaluminate, guiding agent and deionized water according to 7.5SiO 2 :Al 2 o 3 : 2.15Na 2 O: 190H 2 The molar ratio of O is mixed to form a NaY molecular sieve gel, in which the mass ratio of the directing agent is 5%, and after continuous stirring at room temperature for 1 hour, the gel is placed in a crystallization kettle for static crystallization treatment at 100°C After 40 hours of crystallization, cool down rapidly and filter and wash the crystallization slurry to obtain a NaY molecular sieve filter cake; re-add water to the obtained NaY molecular sieve filter cake, disperse evenly, and mix Al 2 (SO 4 ) 3 Solution (concentration 89gAl 2 o 3 / L) and NaAlO 2 Solution (concentration 156gAl 2 o 3 / L) is added wherein to react simultaneously, and the pH value of slurry system in the control reaction process is 9.5, after adding certain hour, according to used Al 2 (SO 4 ) 3 solution and ...

Embodiment 2

[0049] The preparation of NaY molecular sieve is the same as in Example 1, the difference is that the crystallization treatment time is 24 hours; the obtained NaY molecular sieve filter cake is re-added with water for beating, and after being dispersed evenly, at room temperature and under vigorous stirring, the Al(NO 3 ) 3 Solution and ammoniacal liquor are added wherein to react simultaneously, and the pH value of slurry system in the control reaction process is 10.1, after adding certain hour, according to used Al(NO 3 ) 3 Al in solution 2 o 3 By weight, according to SiO 2 :Al 2 o 3 = 1:1.8 weight ratio, add the required tetraethoxy silicon into the reaction system, continue to age at 65°C for 6 hours, filter after aging, wash and dry at 120°C to obtain the porous material SAYN -6.

[0050] The scanning electron microscope photo of SAYN-6 has figure 1 The characteristics shown are that the particle size distribution is uniform, the particle size is 1-2 μm, and the N...

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Abstract

A catalytic material containing rare earth and magnesium is characterized in that the catalytic material simultaneously has a microporous crystal structure of a Y-type molecular sieve and a gamma-Al2O3 mesoporous structure layer, and comprises 2-14 wt% of rare earth oxide and 1-6 wt% of magnesium oxide. According to the catalytic material, a microporous structure and a mesoporous structure are organically combined, and through combination with proper modification treatment of rare earth and magnesium, the heavy oil conversion capacity of the catalytic material is effectively promoted.

Description

technical field [0001] The invention relates to a catalytic material and a preparation method thereof, and more particularly to a catalytic material containing rare earth and magnesium 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 strong B acid centers. Amorphous silica-alumina material is an acidic catalytic material, which ha...

Claims

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Application Information

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