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Synthesis method of Y zeolite-silicon oxide composite material with core-shell structure

A synthesis method and composite material technology, which are applied in the field of core-shell structure Y zeolite-silica composite material and the synthesis field thereof, can solve the problems of difficult control of shell thickness, uneven coating of shell, easy falling off, etc. The effect of difficult to control shell thickness

Active Publication Date: 2022-02-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The Y zeolite-silicon oxide composite material synthesized by the method of the present invention has the characteristics of a core-shell structure, and the preparation method is simple and easy, which solves the problems of uneven coating of the shell layer of the core-shell material obtained by the existing method, unstable and easy falling off of the shell layer, and the like. Especially the problem that the shell thickness is not easy to control

Method used

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  • Synthesis method of Y zeolite-silicon oxide composite material with core-shell structure
  • Synthesis method of Y zeolite-silicon oxide composite material with core-shell structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038]Take 1.32 g of Y zeolite, 2.04 g of octadecyltrichlorosilane, and 8.4 g of toluene, mix them in a water bath at 47 °C for 3 h, and then dry the sample at 120 °C for 10 h. Then mix with 0.0031 g tetraethyl orthosilicate and 1.25 g ethanol (measured as 0.95 g ethanol / 1 g zeolite by equal volume saturated impregnation method), and then place the sample on top of 120 g ethanol solution. Under treatment 2.2h. Then the sample was placed above a solution composed of 7 g of acetic acid, 130 g of ethanol, and 130 g of water, and the sample was not in contact with the solution, and treated at 45° C. for 15 hours. Then the obtained sample was washed 4 times with distilled water until neutral, dried at 120°C for 12 hours, and finally treated at 266°C for 4 hours to obtain the Y zeolite-silicon oxide composite material, and the obtained sample number was CL1. From figure 1 It can be seen that the obtained sample has a core-shell structure.

Embodiment 2

[0040] Take 1 g of Y zeolite, 3 g of octadecyltrichlorosilane, and 11 g of toluene, mix them in a water bath at 50 °C for 4 h, and then dry the sample at 120 °C for 10 h. Then mix with 0.01 g tetraethyl orthosilicate and 0.95 g ethanol (measured as 0.95 g ethanol / 1 g zeolite by equal volume saturated impregnation method), and then place the sample on top of 90 g ethanol solution. The sample is not in contact with the solution. Under treatment for 5h. Then the sample was placed above a solution composed of 4 g of acetic acid, 90 g of ethanol, and 90 g of water, and the sample was not in contact with the solution, and treated at 70° C. for 15 hours. Then the obtained sample was washed 4 times with distilled water until neutral, dried at 120°C for 12 hours, and finally treated at 280°C for 5 hours to obtain the Y zeolite-silicon oxide composite material, and the obtained sample number was CL2.

Embodiment 3

[0042] Take 1 g of Y zeolite, 0.6 g of octadecyltrichlorosilane, and 6 g of toluene, mix them in a water bath at 30 °C for 2 h, and then dry the sample at 120 °C for 10 h. Then mix with 0.001 g tetraethyl orthosilicate and 0.95 g ethanol (measured as 0.95 g ethanol / 1 g zeolite by equal volume saturated impregnation method), and then place the sample on top of 110 g ethanol solution. The sample is not in contact with the solution. Under treatment for 2h. Then the sample was placed above a solution consisting of 8 g of acetic acid, 110 g of ethanol, and 110 g of water, and the sample was not in contact with the solution, and treated at 20° C. for 60 h. Then the obtained sample was washed 4 times with distilled water until neutral, dried at 120°C for 12 hours, and finally treated at 200°C for 2 hours to obtain the Y zeolite-silicon oxide composite material, and the obtained sample number was CL3.

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Abstract

The invention discloses a synthesis method of a Y zeolite-silicon oxide composite material. The synthesis method comprises the following steps: stirring and mixing Y zeolite, octadecyl trichlorosilane and a solvent, and drying; then mixing with alcohols and a silicon source; then sequentially putting into alcohol steam and a water vapor environment containing alcohol and acid, and treating; and finally, washing, drying and carrying out heat treatment to obtain the Y zeolite-silicon oxide composite material. The synthesis method disclosed by the invention is simple and easy to implement, solves the problems that the shell layer of the core-shell material obtained by the existing method is non-uniform in coating, unstable and easy to fall off and the like, and particularly solves the problem that the thickness of the shell layer is not easy to control.

Description

technical field [0001] The invention belongs to the field of synthesis of porous inorganic materials, in particular to a core-shell structure Y zeolite-silicon oxide composite material and a synthesis method thereof. Background technique [0002] A material with a core-shell structure is an important new type of material. Its typical feature is that a certain material is used as the core phase, and a layer of the same or different type of material is grown on the outer surface of the core phase to form a shell layer, forming an egg-like phase. Composite structure in shell form. Because the core-shell material has a unique structure, it has advantages that a single structure material does not have, and has good application prospects in the fields of chemical industry, environmental protection, and optics. However, because of its unique and complex structure, the difficulty of synthesis is far more than that of ordinary materials. The main reason is that its structure is diff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/02B01J29/08B01J32/00B01J35/10B01J20/18
CPCC01B39/026B01J29/084B01J20/186C01P2004/62C01P2004/61C01P2004/86C01P2006/12C01P2004/04B01J35/617Y02E60/10
Inventor 范峰凌凤香张会成王少军杨春雁金鑫
Owner CHINA PETROLEUM & CHEM CORP
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