A kind of y and zsm-35 composite molecular sieve and its synthesis method
A technology of ZSM-35 and composite molecular sieve, which is applied in molecular sieve catalysts, chemical instruments and methods, and other chemical processes. Decrease in crystallinity, improve catalytic activity, and improve physical and chemical properties
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Embodiment 1
[0035](1) Dissolve 3.56 g of sodium hydroxide and 1.33 g of sodium aluminate in 24 mL of distilled water, add 11 mL of water glass to it after the dissolution is complete, then stir until uniform, and stand at 35 °C for 24 h to obtain Y Structure directing agent.
[0036] (2) Dissolve 40 g of glucose in 100 mL of distilled water, add 8 g of ZSM-35 molecular sieves into the glucose solution under stirring, stir for 30 min, place the mixture in an ultrasonic cleaner for 2 h, and then The mixture was filtered, and the obtained product was dried at 120 °C for 12 h, and then calcined at 500 °C for 2 h in a nitrogen atmosphere to obtain a pretreated ZSM-35 molecular sieve.
[0037] (3) Dissolve 0.36 g of sodium aluminate and 0.7 g of sodium hydroxide in 50 mL of distilled water until completely dissolved; then add 2 mL of the Y structure-directing agent obtained in step (1), and stir for 30 min; then add 1.5 g of the step (2 ) obtained ZSM-35 molecular sieve, and then put the mixtu...
Embodiment 2
[0039] (1) Dissolve 3.56 g of sodium hydroxide and 1.33 g of sodium aluminate in 24 mL of distilled water, add 11 mL of water glass to it after the dissolution is complete, then stir until uniform, and stand at 35 °C for 24 h to obtain Y Structure directing agent.
[0040] (2) Dissolve 40 g of glucose in 100 mL of distilled water, add 8 g of ZSM-35 molecular sieves into the glucose solution under stirring, stir for 30 min, place the mixture in an ultrasonic cleaner for 2 h, and then The mixture was filtered, and the obtained product was dried at 120 °C for 12 h, and then calcined at 550 °C for 2 h in a nitrogen atmosphere to obtain a pretreated ZSM-35 molecular sieve.
[0041] (3) Dissolve 0.5 g of sodium aluminate and 0.8 g of sodium hydroxide in 50 mL of distilled water until completely dissolved; then add 2.5 mL of the Y structure-directing agent obtained in step (1), and stir for 30 min; then add 1.5 g of the Y structure-directing agent obtained in step (2 ) obtained ZSM-...
Embodiment 3
[0043] (1) Dissolve 4.02 g of sodium hydroxide and 1.5 g of sodium aluminate in 25 mL of distilled water, add 11 mL of water glass to it after the dissolution is complete, then stir until uniform, and stand at 35°C for 20 hours to obtain the Y structure Directing agent.
[0044] (2) Dissolve 35 g of glucose in 100 mL of distilled water, add 7 g of ZSM-35 molecular sieve into the glucose solution under stirring conditions, stir for 30 min, place the mixture in an ultrasonic cleaner for 2 h, and then place the mixture After filtering, the obtained product was dried at 120° C. for 12 hours, and then calcined at 550° C. for 1.5 hours in a nitrogen atmosphere to obtain a pretreated ZSM-35 molecular sieve.
[0045] (3) Dissolve 0.36 g of sodium aluminate and 0.7 g of sodium hydroxide in 50 mL of distilled water until completely dissolved; then add 2 mL of the Y structure-directing agent obtained in step (1), and stir for 30 min; then add 1.7 g of the step (2 ) obtained ZSM-35 molec...
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