A kind of preparation method of mesoporous Y-type molecular sieve
A molecular sieve and mesoporous technology, which is applied in the directions of crystalline aluminosilicate zeolite, octahedral crystalline aluminosilicate zeolite, etc., can solve the problems of the decrease of zeolite pore diffusion capacity and the increase of polycyclic compound content, etc., and achieve environmental protection benefits. Effect
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Embodiment 1
[0026] 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.
[0027] NaY molecular sieves were treated in a mixture of glycerin and carboxyethyl cellulose with a degree of polymerization of 200 at 170°C for 3 hours. The mass mixing ratio of Y molecular sieves to glycerin and carboxyethyl cellulose was 1:20:0.05, and then the obtained The mixed solution and the inorganic guiding agent were mixed at normal temperature and pressure for 1 hour, the mass mixing ratio of the Y-type molecular sieve and the inorganic guiding agent was 1:0.5, and then treated in a closed reactor at 90°C for 8 hours, the mixture was filtered, washed with water, and dried at 100 °C for 5 hours, and then baked at 550 °C for 5 hours to obtain a molecular sieve sample, which is designated as GL-1.
[0028] figure 1 I...
Embodiment 2
[0038] 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.
[0039] Treat NaY molecular sieves in a mixture of glycerin and carboxyethyl cellulose with a degree of polymerization of 500 at 170°C for 3 hours. The mass mixing ratio of Y molecular sieves to glycerin and carboxyethyl cellulose is 1:20:0.05, and then The mixed solution and the inorganic guiding agent were mixed at normal temperature and pressure for 1 hour, the mass mixing ratio of the Y-type molecular sieve and the inorganic guiding agent was 1:0.5, and then treated in a closed reactor at 90°C for 8 hours, the mixture was filtered, washed with water, and dried at 100 °C for 5 hours, and then baked at 550 °C for 5 hours to obtain a molecular sieve sample, which is designated as GL-2.
[0040] The XRD spectrum is the same as f...
Embodiment 3
[0043] 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.
[0044] NaY molecular sieves were treated in a mixture of glycerin and carboxyethyl cellulose with a degree of polymerization of 1500 at 170°C for 3 hours. The mass mixing ratio of Y molecular sieves to glycerol and carboxyethyl cellulose was 1:20:0.05, and then the obtained The mixed liquid and the inorganic directing agent were mixed at normal temperature and pressure for 1 hour, the mass mixing ratio of the Y-type molecular sieve and the inorganic directing agent was 1:0.2, and then treated in a closed reactor at 90°C for 8 hours, the mixture was filtered, washed with water, and placed in 100 °C for 5 hours, and then baked at 550 °C for 5 hours to obtain a molecular sieve sample, which is designated as GL-3.
[0045] The XRD...
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