Magnetic functional zeolite molecular sieve catalyst and preparation method thereof
A zeolite molecular sieve and catalyst technology, applied in the field of magnetic functional zeolite molecular sieve catalyst and its preparation, can solve the problems of difficulty in wide application, poor mechanical strength, no report on the synthesis of single-crystal zeolite-coated magnetic nanoparticle materials, etc., and the method is simple and rapid. , The effect of large micropore specific surface area and high yield
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Embodiment 1
[0032] (1) Add 0.02 g Fe 3 o 4 Nanoparticles were dispersed in 10 ml of ethanol and 90 ml of deionized water, followed by the addition of 4 ml of concentrated ammonia. Under mechanical stirring, 1 ml of tetraethyl orthosilicate (TEOS) was slowly added dropwise and hydrolyzed for 1 h at room temperature. Add 0.01 g of resorcinol and 0.02 ml of formaldehyde to the above system, and continue to react with mechanical stirring at room temperature for 1 day. Finally, the product is separated with a magnet, and the product obtained is washed with water and ethanol;
[0033] (2) Fe will be obtained 3 o 4 @SiO 2 @RF (phenolic resin) is roasted and carbonized under nitrogen, and the carbonized Fe 3 o 4 @SiO 2 @C and then etched SiO with 1 mole per liter of sodium hydroxide solution in an 80-degree oil bath 2 get Fe 3 o 4 @hollow@C;
[0034] (3) will get 0.01 g Fe 3 o 4 @hollow@C dispersed in 5 ml of (0.1 Tetraethyl orthosilicate: 0.2 Tetrapropylammonium hydroxide: 0 Alumin...
Embodiment 2
[0036] (1) Add 0.1 g CoFe 2 o 4 Nanoparticles were dispersed in 50 ml of ethanol and 50 ml of deionized water, followed by the addition of 1 ml of concentrated ammonia. Under mechanical stirring, 2 ml of tetramethyl orthosilicate (TMOS) was slowly added dropwise and hydrolyzed for 1 h at room temperature. Then, 0.05 g of phenol and 0.1 ml of formaldehyde were added to the above system, and mechanical stirring was continued for 1 day at room temperature. Finally, the product is separated with a magnet, and the product obtained is washed with water and ethanol;
[0037] (2) CoFe will be obtained 2 o 4 @SiO 2 @RF (phenolic resin) is roasted and carbonized under nitrogen, and the carbonized CoFe 2 o 4 @SiO 2 @C and then etched SiO with 1 mole per liter of ammonia water in an 80-degree oil bath 2 Get CoFe 2 o 4 @hollow@C;
[0038] (3) will get 0.1 g CoFe 2 o 4 @hollow@C dispersed in 10 ml of (2 sodium silicate: 0.5 tetraethylammonium hydroxide: 0.02 aluminum sulfate: ...
Embodiment 3
[0040] (1) Add 0.05 g Fe 3 o 4 Nanoparticles were dispersed in 30 ml of ethanol and 60 ml of deionized water, followed by the addition of 3 ml of concentrated ammonia. Under mechanical stirring, 1 ml of tetrabutyl orthosilicate (TBOS) was slowly added dropwise and hydrolyzed for 1 h at room temperature. Add 0.03 g of hydroquinone and 0.06 ml of formaldehyde to the above system, and continue to react with mechanical stirring at room temperature for 1 day. Finally, the product is separated with a magnet, and the product obtained is washed with water and ethanol;
[0041] (2) Fe will be obtained 3 o 4 @SiO 2 @RF (phenolic resin) is roasted and carbonized under nitrogen, and the carbonized Fe 3 o 4 @SiO 2 @C and then etched SiO with 1 mole per liter of sodium hydroxide solution in an 80-degree oil bath 2 get Fe 3 o 4 @hollow@C;
[0042] (3) will get 0.05 g Fe 3 o 4 @hollow@C is dispersed in 5 ml of (1 silica: 0.1 tetrabutylammonium hydroxide: 0.02 sodium metaaluminat...
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