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a mesoporous material

A technology of mesoporous materials and templating agents, which is applied in the field of preparation of mesoporous materials, can solve the problems of expanding the application range of mesoporous materials, and achieve the effects of good pore order, mild conditions, and easy availability of raw materials

Active Publication Date: 2018-04-24
菏泽市牡丹区永胜泡沫制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the pure silicon skeleton only contains a small amount of weak acid centers, which limits its application. Therefore, other atoms can be introduced to increase the number and strength of acid centers, improve the performance of the skeleton, ion exchange performance, and expand the application range of mesoporous materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1 A kind of mesoporous material

[0015] Dissolve 5p123 and 7 parts of ethylene glycol in 100 parts of 1.5 mol / L dilute hydrochloric acid, and stir at 500 rpm for 8 hours at a constant temperature of 35°C.

[0016] Add 15 parts of ethyl orthosilicate dropwise at a stirring speed of 800 rpm. After the addition is complete, continue stirring and raise the temperature to 80° C. at a rate of 2° C. / min, and then keep it for 24 hours to obtain solid A.

[0017] Dissolve 1.5 parts of lactide in ethanol and stir well. Then, while stirring, add 0.5 parts of concentrated sulfuric acid dropwise, then add solid A which is ground to 100 mesh, continue stirring for 6 hours, wait for the solvent to volatilize to obtain the mixture, keep it at 100°C for 6 hours, then quickly heat it to 130°C, keep it for 8 hours, and get a solid Substance B.

[0018] The solid material B was vacuum-dried at 50°C for 12 hours, then annealed at a high temperature in a hydrogen atmosphere for...

Embodiment 2

[0019] Embodiment 2 A kind of mesoporous material

[0020] Dissolve 8 parts of p123 and 9 parts of ethylene glycol in 150 parts of 1.0 mol / L dilute hydrochloric acid, and stir at 500 rpm for 10 h at a constant temperature of 30°C.

[0021] Add 10 parts of ethyl orthosilicate dropwise at a stirring speed of 700rpm. After the addition is complete, continue stirring and raise the temperature to 80°C at a rate of 2°C / min, and then keep it for 20 hours to obtain solid A.

[0022] Dissolve 1 part of lactide in ethanol and stir well. Then, while stirring, add 0.3 parts of concentrated sulfuric acid dropwise, then add solid A which is ground to 120 mesh, continue to stir for 5-8 hours, wait for the solvent to volatilize to obtain a mixture, keep it at 100°C for 6 hours, then quickly heat it to 130-150°C, keep it warm 10h, the solid substance B was obtained.

[0023] The solid material B was vacuum-dried at 80°C for 12 hours, then annealed at a high temperature in a hydrogen atmosphe...

Embodiment 3

[0024] Embodiment 3 A kind of mesoporous material

[0025] Dissolve 7 parts of p123 and 8 parts of ethylene glycol in 120 parts of dilute hydrochloric acid with a concentration of 1.0-1.5 mol / L, and stir at 500 rpm for 12 hours at a constant temperature of 32°C.

[0026] Add 12 parts of ethyl orthosilicate dropwise at a stirring speed of 800 rpm. After the addition is complete, continue stirring and raise the temperature to 80° C. at a rate of 2° C. / min, and then keep it for 24 hours to obtain solid A.

[0027] Dissolve 1.2 parts of lactide in ethanol and stir well. Then, while stirring, add 0.4 parts of concentrated sulfuric acid dropwise, then add solid A which is ground to 120 mesh, continue stirring for 8 hours, wait for the solvent to volatilize to obtain the mixture, keep it at 100°C for 6 hours, then quickly heat it to 150°C, keep it for 8 hours to get a solid Substance B.

[0028] The solid material B was vacuum-dried at 80°C for 12 hours, then annealed at a high tem...

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PUM

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Abstract

The invention discloses a mesoporous material. Lactide is used as a carbon precursor (that is, a carbon source), and ethylene glycol and SBA-15 are mixed together to obtain a mesoporous material with strong acid sites. The raw materials in the preparation process of the material are easy to obtain , large specific surface area, simple synthesis method, mild conditions, good pore order, as an adsorption material, it has excellent adsorption performance for heavy metals.

Description

technical field [0001] The invention relates to the preparation of a mesoporous material. Background technique [0002] Mesoporous material is a porous material with a pore diameter between 2 and 50 nm, which has a large specific surface area and a uniform pore size distribution. It has the characteristics of good shape selectivity, high diffusion ability, strong adsorption ability, etc., and also has good electrical conductivity, mechanical stability and thermal stability, and most of them are chemically inert, which can be used for adsorption, catalysis, electrochemistry, chromatography, etc. field of separation. [0003] In 1998, Stucky et al. used p123 as a template for the first time to prepare SBA-15 with a two-dimensional hexagonal structure, which has a large pore size, wall thickness and hydrothermal stability. However, the pure silicon framework only contains a small amount of weak acid centers, which limits its application. Therefore, other atoms can be introduc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B39/00C01B37/00
Inventor 苏建丽
Owner 菏泽市牡丹区永胜泡沫制品有限公司