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Two-stage crystallization method synthetic Y/ZrO2 composite material and preparation method thereof

A composite material, crystallization technology, applied in chemical instruments and methods, chemical/physical processes, cracking, etc., can solve the problems of limited molecular sieve ratio, limited catalyst performance regulation, and difficulty in adapting to raw material requirements.

Active Publication Date: 2017-09-01
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to ensure the anti-wear performance of the FCC catalyst, the proportion of molecular sieve in the catalyst is limited
At the same time, the pore structure and acidity adjustment of the FCC catalyst support are also difficult to meet expectations, and the degree of optimization of the final catalyst performance is limited
The determination of chemical composition and pore structure limits the regulation of catalyst performance, and it is difficult to adapt to the demand for raw materials with changing properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment provides a Y / ZrO 2 Composite materials, the specific preparation method is as follows:

[0037] (1) Sodium hydroxide, sodium metaaluminate, silica sol and deionized water were mixed according to Na 2 O: Al 2 o 3 :SiO2 2 :H 2 O=6:1:14:240 molar ratio mixing, adding mass percent is 18% (as Al in the mixture 2 o 3 The mass meter) NaY molecular sieve, stirred and mixed for 2 hours and left to stand for aging for 5 hours to obtain mixture A;

[0038] (2) Crystallize mixture A at 100°C for 6 hours (the first stage of hydrothermal crystallization), and cool to room temperature to obtain mixture B;

[0039] (3) Sodium hydroxide and zirconium oxychloride were mixed and ground for 15 minutes at a molar ratio of 2:1 to obtain a zirconium dioxide precursor;

[0040] (4) Then, under stirring, the resulting zirconium dioxide precursor is molar ratio ZrO 2 :Al 2 o 3 =8.2:1 was added to mixture B, and the mixture C was obtained after continuous stirring and m...

Embodiment 2

[0044] This embodiment provides a Y / ZrO 2 Composite materials, the specific preparation method is as follows:

[0045] (1) Sodium hydroxide, sodium metaaluminate, silica sol and deionized water were mixed according to Na 2 O: Al 2 o 3 :SiO2 2 :H 2 O=6:1:14:240 molar ratio mixing, adding mass percent is 18% (as Al in the mixture 2 o 3 The mass meter) NaY molecular sieve, stirred and mixed for 1.5 hours and left to age for 5 hours to obtain mixture A;

[0046] (2) crystallize the mixture obtained in step (1) at 105°C for 5 hours (the first stage of hydrothermal crystallization), and cool to room temperature to obtain mixture B;

[0047] (3) Sodium hydroxide and zirconium oxychloride were mixed and ground for 30 minutes at a molar ratio of 2:1 to obtain a zirconium dioxide precursor;

[0048] (4) Then, under stirring, the resulting zirconium dioxide precursor is molar ratio ZrO 2 :Al 2 o 3 =8.2:1 Add mixture B, and continue stirring and mixing for 1.5 hours to obtain m...

Embodiment 3

[0052] This embodiment provides a Y / ZrO 2 Composite materials, the specific preparation method is as follows:

[0053] (1) Sodium hydroxide, sodium metaaluminate, silica sol and deionized water were mixed according to Na 2 O: Al 2 o 3 :SiO2 2 :H 2 O=6:1:14:240 molar ratio mixing, adding mass percent is 18% (as Al in the mixture 2 o 3 The NaY molecular sieve of the mass meter) was stirred and mixed for 2.5 hours and left to stand for aging for 5 hours to obtain mixture A;

[0054] (2) crystallize the mixture obtained in step (1) at 90°C for 5 hours (the first stage of hydrothermal crystallization), and cool to room temperature to obtain mixture B;

[0055] (3) Sodium hydroxide and zirconium oxychloride were mixed and ground for 20 minutes at a molar ratio of 2:1 to obtain a zirconium dioxide precursor;

[0056] (4) Then, under stirring, the resulting zirconium dioxide precursor is molar ratio ZrO 2 :Al 2 o 3 =8.2:1 Add mixture B, and continue to stir and mix for 0.5 ...

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Abstract

The invention provides a two-stage crystallization method synthetic Y / ZrO2 composite material and a preparation method thereof. The method comprises the following steps: adding a zirconium dioxide precursor ZrOx(OH)y (x being greater than or equal to 0 and smaller than or equal to 2, y being greater than or equal to 0 and smaller than or equal to 4) into a hydro-thermal synthesis system of a Y-shaped molecular sieve after primary crystallization, then carrying out crystallization treatment again so that crystallization growth of zirconium dioxide and the Y-shaped molecular sieve is achieved, and finally obtaining the Y / ZrO2 composite material. The Y / ZrO2 composite material prepared by adopting the method provided by the invention has the pore advantage of a mesoporous material and also has the high acidity and high hydrothermal stability of a mesoporous molecular sieve, so that the Y / ZrO2 composite material is applicable for preparing catalytic cracking catalysts or hydrocracking catalysts.

Description

technical field [0001] The invention belongs to the technical field of solid composite materials, in particular to Y / ZrO synthesized by a two-stage crystallization method 2 Composite materials and methods for their preparation. Background technique [0002] Catalytic cracking (FCC) is one of the most important means of lightening heavy oil in the oil refining industry, and it is also the secondary processing process of crude oil with the largest amount of catalyst. In the course of nearly 80 years of development, catalytic cracking (FCC) catalysts are composed of silicon-alumina as the main element, and its pore structure is mainly composed of micropores provided by Y-type molecular sieves and a small amount of irregular mesopores endowed by the carrier. The determination of chemical composition and pore structure restricts the regulation of catalyst performance, and it is difficult to adapt to the demand for raw materials with changing properties. Especially since the 199...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/08B01J35/10C10G11/05C10G47/20
CPCC10G11/05C10G47/20B01J29/088B01J2229/18B01J35/615B01J35/633
Inventor 刘欣梅刘万荣阎子峰
Owner BC P INC CHINA NAT PETROLEUM CORP
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