NaY compound and preparation method thereof

A compound and reaction mixture technology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., to achieve the effects of cheap and easy-to-obtain raw materials, improved heavy oil conversion rate, and high specific surface area

Active Publication Date: 2014-04-02
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

People have successfully synthesized 4A zeolite, calcium zeolite, sodalite zeolite, ZSM-5 molecular sieve, etc. using perlite, but there is no report on the synthesis of Y-type molecular sieve from expanded perlite.

Method used

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  • NaY compound and preparation method thereof
  • NaY compound and preparation method thereof
  • NaY compound and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides a NaY complex, which is prepared by the following steps:

[0032] Prepare the targeting agent according to the method provided in Example 1 in CN1785808A;

[0033] Put 160g of water glass in a beaker, control the temperature in the beaker to 60℃, add 45g of directing agent, add 27.8g of expanded perlite after stirring evenly, add 4.55g of NaOH and 96.8g of water after thorough mixing, and stir for 1h , Put it into the reactor, crystallize at 100°C for 28 hours, then filter, wash, and dry to obtain the NaY complex, which is recorded as the Z-1 sample.

[0034] The bulk density of the NaY composite determined by XRD ray diffraction is 0.2g / cm 3 , The relative crystallinity of the active component is 56%, SiO 2 / Al 2 O 3 The mole ratio is 5.41, and the scanning range 2θ is 5°-35°. The diffraction spectrum is shown in figure 1 , The average grain size is about 200nm (see SEM figure 2 with image 3 ), the BET specific surface area is 669m 2 / g(See Figure ...

Embodiment 2

[0040] This embodiment provides a NaY complex, which is prepared by the following steps:

[0041] Prepare the targeting agent according to the method provided in Example 1 in CN1785808A, the same as in Example 1;

[0042] Place 47g of water glass in a beaker, control the temperature in the beaker to 60℃, add 45g of directing agent, add 27.8g of expanded perlite after stirring well, add 7.32g of NaOH and 79.4g of water after mixing well, and stir for 1h , Put it into the reactor, crystallize at 100°C for 28 hours, then filter, wash, and dry to obtain the NaY complex, which is recorded as the Z-2 sample.

[0043] The bulk density of NaY composite determined by XRD ray diffraction is 0.22g / cm 3 , The relative crystallinity of the active component is 67%, SiO 2 / Al 2 O 3 The molar ratio is 4.2, and the XRD spectrum is similar to Example 1, as figure 1 As shown, the BET specific surface area is 622m 2 / g.

Embodiment 3

[0045] This embodiment provides a NaY complex, which is prepared by the following steps:

[0046] Prepare the targeting agent according to the method provided in Example 1 in CN1785808A, the same as in Example 1;

[0047] Put 89.2g of water glass in a beaker, control the temperature in the beaker to 50℃, add 45g of directing agent, stir well, add 27.8g of expanded perlite, after thoroughly mixing, add 5.3g of NaOH and 85.8g of water, and stir for 1h Afterwards, it was put into the reaction kettle, crystallized at 100°C for 28 hours, then filtered, washed, and dried to obtain the NaY complex, which was recorded as the Z-3 sample.

[0048] The bulk density of the NaY composite determined by XRD ray diffraction is 0.24g / cm 3 , The relative crystallinity of the active component is 65%, SiO 2 / Al 2 O 3 The molar ratio is 4.7, and the XRD spectrum is similar to Example 1, as figure 1 As shown, the BET specific surface area is 670m 2 / g.

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Abstract

The invention relates to a NaY compound and a preparation method thereof. The NaY compound is composed of NaY molecular sieve and expanded perlite, the NaY molecular sieve grows on the expanded perlite in an overgrowth manner, and the NaY compound has a bulk density of 0.25g / cm<3> or less, a BET specific surface area of 600m<2> / g or more and a molar ratio of SiO2 / Al2O3 of 4.0-6.0. The preparation method of the NaY compound comprises the following steps: mixing a silicon source, a crystallization directing agent, the expanded perlite, NaOH and water to obtain a reaction mixture; and crystallizing the reaction mixture at 70-120DEG C for 5-72h, filtering, washing, and drying to prepare the NaY compound. The NaY compound can be used in a cracking reaction, allows the flowing state of a catalyst to be good, heavy oil macromolecules to easily approach active sites and cracking products to be easily dispersed, can improve the heavy oil conversion rate, and allows the catalyst to have a good catalytic activity. The preparation method of the NaY compound has the advantages of cheap and easily available raw materials, low cost, no environmental pollution, and good application prospect.

Description

Technical field [0001] The invention relates to a NaY composite and a preparation method thereof, and belongs to the technical field of molecular sieve composite material preparation. Background technique [0002] At present, my country’s oil refining and processing crude oil is becoming increasingly heavy. As an important heavy crude oil processing technology in my country, fluidized catalytic cracking technology (FCC) currently has a processing capacity of 120 million tons, accounting for 45% of domestic heavy oil processing and providing 75% of my country’s Gasoline and 35% diesel fuel and 39% propylene with high added value. Catalytic technology requires the catalyst to be in a fluidized state to ensure sufficient contact between the catalyst and the heavy oil molecules, and complete the cracking to produce small molecules of gasoline and diesel components and olefins. Therefore, the physical and chemical properties of the catalyst determine the distribution of catalytic prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/24B01J29/08C10G11/18C10G11/05
Inventor 申宝剑周晓晓郭艳郭巧霞王闻年杨庶秦毓辰
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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