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Preparation method of sulfonic acid functionalized mesoporous molecular sieve membrane

A mesoporous molecular sieve and sulfonic acid functionalization technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc., can solve the problems of long synthesis time, small particle size, and difficulty in recycling, etc. Achieve the effect of fast curing rate, high conversion rate and easy separation

Pending Publication Date: 2019-01-18
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional synthesis method takes a long time to synthesize and needs to use a large amount of water. Because of the lack of functional functional groups, its mode of action on heavy metal ions is usually physical adsorption. The prepared mesoporous molecular sieves are mostly particles with small particle sizes, making them difficult to recycle. Utilization, which seriously limits the industrial application

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  • Preparation method of sulfonic acid functionalized mesoporous molecular sieve membrane
  • Preparation method of sulfonic acid functionalized mesoporous molecular sieve membrane

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Experimental program
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Effect test

Embodiment approach 1

[0021] The preparation method of the sulfonic acid functionalized mesoporous molecular sieve membrane in this embodiment is as follows:

[0022] (1) Polydimethoxysilane (PDMOS), 1,4-bis(triethoxysilyl)benzene (B6), (3-mercaptopropyl)trimethoxysilane, polyethylene glycol-polyglycerol Alcohol-polyethylene glycol (P123) and diphenyliodonium hexafluorophosphate (DH) were mixed in a mass ratio of 3:0.3:0.2:1:0.01, and stirred on a magnetic stirrer to obtain a coating solution;

[0023] (2) Spread the obtained coating solution evenly on the porous ceramic substrate to form a liquid film;

[0024] (3) Use a 200W high-pressure mercury lamp to irradiate the liquid film on the substrate for 30 minutes to obtain a silicone film containing a template;

[0025] (4) Soak the organosilicon membrane in ethanol solution for 24 hours, remove the template agent P123, and obtain the organosilicon mesoporous molecular sieve membrane containing mercapto groups;

[0026] (5) Soak the organosilicon...

Embodiment approach 2

[0031] The preparation method of the sulfonic acid functionalized mesoporous molecular sieve membrane in this embodiment is as follows:

[0032] (1) Polydimethoxysilane (PDMOS), 1,4-bis(triethoxysilyl)benzene (B6), (3-mercaptopropyl)triethoxysilane, polyethylene glycol-polypropylene After mixing triol-polyethylene glycol (P123) and 4-isobutylphenyl-4'-methylphenyl iodohexafluorophosphate (I250) at a mass ratio of 2:0.1:0.4:0.5:0.02, set Stir on a magnetic stirrer to obtain a coating solution;

[0033] (2) Spread the obtained coating solution evenly on the porous stainless steel substrate to form a liquid film;

[0034] (3) Use a 200W high-pressure mercury lamp to irradiate the liquid film on the substrate for 30 minutes to obtain a silicone film containing a template;

[0035] (4) Soak the organosilicon membrane in ethanol solution for 24 hours, remove the template agent P123, and obtain the organosilicon mesoporous molecular sieve membrane containing mercapto groups;

[00...

Embodiment approach 3

[0038] The preparation method of the sulfonic acid functionalized mesoporous molecular sieve membrane in this embodiment is as follows:

[0039] (1) Polydimethoxysilane (PDMOS), 1,4-bis(triethoxysilyl)benzene (B6), (mercaptomethyl)-methyl-diethoxysilane, polyethylene glycol -Polyglycerol-polyethylene glycol (P123) mixed with photoinitiator diphenyl-(4-phenylthio)phenylsulfonium hexafluorophosphate (UV6992) in a mass ratio of 5:0.5:0.5:2:0.05 After that, place it on a magnetic stirrer and stir to obtain a coating solution;

[0040] (2) Spread the obtained coating solution evenly on the porous ceramic substrate to form a liquid film;

[0041] (3) Use a 200W high-pressure mercury lamp to irradiate the liquid film on the substrate for 30 minutes to obtain a silicone film containing a template;

[0042] (4) Soak the organosilicon membrane in ethanol solution for 24 hours, remove the template agent P123, and obtain the organosilicon mesoporous molecular sieve membrane containing m...

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Abstract

The invention relates to the technical field of mesoporous molecular sieves, and discloses a preparation method of a sulfonic acid functionalized mesoporous molecular sieve membrane. Poly(dimethoxysilane), 1,4-di(triethoxysilyl)benzene, mercaptosilane, a template agent and a photoacid generator are uniformly mixed and applied to a substrate, and then polymerization is performed by irradiation witha high-pressure mercury lamp to form an organosilicon membrane; the organosilicon membrane is immersed in an ethanol solution to remove the template agent to obtain an organosilicon mesoporous molecular sieve membrane containing mercapto; the organosilicon mesoporous molecular sieve membrane is treated by H2O2 and dilute H2SO4 solutions successively to obtain the sulfonic acid functionalized organosilicon mesoporous molecular sieve membrane. Compared with the prior art, the sulfonic acid functionalized mesoporous molecular sieve membrane is obtained by introducing a large amount of mercapto and a simple treatment in the method, so that heavy metal ions can be adsorbed by ion bonding; the method does not need to use any solvent in the preparation process, and the prepared membrane can be easily separated and reused.

Description

technical field [0001] The invention relates to the technical field of mesoporous molecular sieves, in particular to a preparation method of a sulfonic acid functionalized mesoporous molecular sieve membrane. Background technique [0002] Heavy metal pollution of water bodies has become a serious global problem. For its governance, the most effective and widely used method is the adsorption method. Mesoporous molecular sieves have been widely used in the treatment of heavy metal pollution because of their specific surface area and large pore volume. The traditional synthesis method takes a long time to synthesize and needs to use a large amount of water. Because of the lack of functional functional groups, its mode of action on heavy metal ions is usually physical adsorption. The prepared mesoporous molecular sieves are mostly particles with small particle sizes, making them difficult to recycle. Utilization severely limits the industrial application. Contents of the inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08J7/12C08J7/14C08L83/04C02F1/28C02F101/20
CPCC02F1/285C02F2101/20C08J5/18C08J7/12C08J7/14C08J2383/04
Inventor 蔡鹏毛宇李祥艳刘永涛倪伶俐姜孝武
Owner HUAIYIN INSTITUTE OF TECHNOLOGY