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A kind of modification method of Y-type molecular sieve

A molecular sieve and modification technology, applied in the direction of crystalline aluminosilicate zeolite, octahedral crystalline aluminosilicate zeolite, etc., can solve the problems of limited application range and long process

Active Publication Date: 2019-03-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above method has a long process and the scope of application is limited

Method used

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  • A kind of modification method of Y-type molecular sieve
  • A kind of modification method of Y-type molecular sieve
  • A kind of modification method of Y-type molecular sieve

Examples

Experimental program
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Effect test

Embodiment 1

[0027] According to 1Al 2 o 3 : 15SiO 2 : 16Na 2 O: 320H 2 O molar ratio, 8.2g NaOH was added to 55ml deionized water, stirred to a clear solution, 3.0g sodium metaaluminate was added to the above solution, then 35.8g water glass (modulus 2.5) was added, and the stirring was continued at room temperature until All dissolved, and then aged at 30°C for 20 hours to obtain the directing agent.

[0028] Treat NaY-type molecular sieves in glycerin at 190°C for 2 hours. The mass mixing ratio of Y-type molecular sieves and glycerin is 1:5. Mix with polyacrylamide with a molecular weight of 10,000 at 70°C for 1 hour. The mass mixing ratio of Y-type molecular sieve to inorganic directing agent, water, polyquaternary ammonium urea-containing polymer and polyacrylamide is 1:0.6:5:0.1:0.1. Afterwards, it was treated in a closed reactor at 100°C for 12 hours, the mixture was filtered, washed with water, dried at 100°C for 3 hours, and then calcined at 550°C for 5 hours to obtain a mole...

Embodiment 2

[0038] According to 1Al 2 o 3 : 15SiO 2 : 16Na 2 O: 400H 2 O molar ratio, 8.2g NaOH was added to 58ml deionized water, stirred to a clear solution, 3.0g sodium metaaluminate was added to the above solution, then 35.8g water glass (modulus 2.5) was added, and the room temperature continued to stir until All dissolved, and then aged at 30°C for 20 hours to obtain the directing agent.

[0039] Treat NaY-type molecular sieves in glycerin at 200°C for 2 hours. The mass mixing ratio of Y-type molecular sieves and glycerin is 1:10. Mix with polyacrylamide with a molecular weight of 10,000 at 70°C for 1 hour. The mass mixing ratio of Y-type molecular sieve, inorganic guide agent, water, polyquaternary ammonium urea-containing polymer and polyacrylamide is 1:5:6:0.2:0.2 , and then treated in a closed reactor at 100°C for 12 hours, the mixture was filtered, washed with water, and dried at 100°C for 5 hours, and then calcined at 550°C for 5 hours to obtain a molecular sieve sample, ...

Embodiment 3

[0042] According to 1Al 2 o 3 : 15SiO 2 : 16.5Na 2 O: 320H 2 O molar ratio, 9.4g of water glass (modulus 3.3) was added to 6.9g of sodium metaaluminate solution, stirred to dissolve, and then aged at 45°C for 5 hours to obtain the directing agent. Treat NaY molecular sieves in glycerin at 200°C for 2 hours. The mass mixing ratio of Y molecular sieves and glycerin is 1:12. Ammonium chloride and polyacrylamide with a molecular weight of 10,000 were mixed at 80°C for 1 hour, and the mass mixing ratio of Y-type molecular sieve, inorganic guiding agent, water, polydimethyldiallylammonium chloride and polyacrylamide was 1:0.5 : 8: 0.15: 0.15, and then treated in a closed reactor at 110°C for 4 hours, filtered the mixture, washed with water, dried at 100°C for 5 hours, and then roasted at 550°C for 5 hours to obtain a molecular sieve sample. Recorded as AM-3. The structural parameters are shown in Table 1.

[0043] The characteristics of the XRD spectrum are the same as figur...

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Abstract

The invention discloses a modifying method of a Y type molecular sieve, which is characterized in that the method includes steps of mixing the Y type molecular sieve and glycerinum for 0.5-5 h under the temperature of 150-220DEG C, and contacting and mixing the acquired glycerinum processing mixed liquor with inorganic guiding agent, water, macromolecular cation quaternary ammonium salt compound and macromolecular anionic compound for 0.5-2 h at 30-80DEG C; placing the components in a closed reaction kettle and processing for 2-20 h at 80-120DEG C, and recycling a modified product, wherein the mass mixing ratio of the Y type molecular sieve and glycerinum is 1: (2-15); the mass ratio of Y type molecular sieve, the inorganic guiding agent, water, macromolecular cation quaternary ammonium salt compound and macromolecular anionic compound is 1: (0.1-10): (0.2-10): (0.02-0.5): (0.02-0.5).

Description

technical field [0001] The invention relates to a method for modifying a Y-type molecular sieve. Background technique [0002] Y-type molecular sieves have been the main active component of catalytic cracking (FCC) catalysts since they were first used in the 1960s. However, with the intensification of heavy crude oil, the content of polycyclic compounds in FCC feedstock increased significantly, but its diffusion capacity in zeolite channels decreased significantly. In order to overcome the defects of conventional microporous molecular sieves, reducing the crystal size of molecular sieves and introducing mesopores into molecular sieve crystals can effectively improve their diffusion properties. Compared with traditional microporous molecular sieves, mesoporous molecular sieves have excellent internal and external diffusion properties, exhibit unique catalytic activity in the catalytic reaction of polymers, and can delay catalyst deactivation and reduce coke yield (Perez-Rami...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B39/24
CPCC01B39/24
Inventor 李文林达志坚罗一斌郑金玉
Owner CHINA PETROLEUM & CHEM CORP
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