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Hydrophobic molecular sieve-based composite material and preparation method thereof

A composite material and molecular sieve-based technology, which is applied in the field of hydrophobic molecular sieve-based composite materials and their preparation, can solve the problems of low utilization rate, high cost, low content of effective components of adsorption materials, etc., and achieves shortened manufacturing time and good hydrophobicity. , strong hydrophobic effect

Active Publication Date: 2019-02-12
BEIJING LONGTAO ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a hydrophobic molecular sieve-based composite material and its preparation method, aiming to solve the problem of the effective adsorption material faced by the molecular sieve adsorbent when dealing with waste gas containing VOCs. Problems such as low ingredient content, low utilization rate, and high cost

Method used

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  • Hydrophobic molecular sieve-based composite material and preparation method thereof
  • Hydrophobic molecular sieve-based composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A preparation method of a hydrophobic molecular sieve-based composite material:

[0029] Step 1: Cyclohexylamine: Sodium Hydroxide: Silicon Dioxide: Water = 0.8~1.2: 0.8~1.2: 40~45: 380~390 according to the molar ratio respectively, after accurate weighing, put it in the crystallization reaction kettle and stir After uniformity, airtight, microwave heating, after 60 minutes of treatment, move to 180°C oven, keep for 60 minutes, and cool to room temperature. Keep the obtained material in the still, and the mixed solution in the still is recorded as mixed solution A;

[0030] Step 2: Weigh 100 g of the mixed solution A in a beaker, and add 5 to 10 grams of glass fiber monofilaments with a diameter of 2 to 15 microns into the mixed solution A, and ultrasonically treat it for 10 to 20 minutes to form a suspension;

[0031] Step 3: Weigh 1 to 5 g of polydimethyldiallyl ammonium chloride, slowly add the suspension in step 2, and continue to sonicate for 3 to 8 minutes, then ...

Embodiment 2

[0037] A preparation method of a hydrophobic molecular sieve-based composite material:

[0038] Step 1: According to the molar ratio of tetraethylammonium hydroxide: sodium hydroxide: silicon dioxide: water = 1.2: 1.2: 45: 380, after accurate weighing, put it in the crystallization reaction kettle, stir it evenly, seal it, and use Microwave heat treatment, after 30 minutes of treatment, move to 180°C oven, keep for 120 minutes, and cool to room temperature. Keep the obtained material in the still, and the mixed solution in the still is recorded as mixed solution A;

[0039] Step 2 to step 7 are the same as step 2 to step 7 in embodiment 1;

Embodiment 3

[0041] A preparation method of a hydrophobic molecular sieve-based composite material:

[0042] Step 1: According to the molar ratio of tetraethylammonium hydroxide: sodium hydroxide: silicon dioxide: water = 1.0: 1.0: 40: 390, after accurate weighing, put it in the crystallization reaction kettle, stir it evenly, seal it, and use Microwave heat treatment, after treatment for 120 minutes, move to 180°C oven, keep for 30 minutes, and cool to room temperature. Keep the obtained material in the still, and the mixed solution in the still is recorded as mixed solution A;

[0043] Step 2 to step 7 are the same as step 2 to step 7 in embodiment 1;

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Abstract

The invention discloses a hydrophobic molecular sieve-based composite material and a preparation method thereof. The composite material is mainly prepared from pure silicon-based ZSM-5, is doped witha small amount of SiO2, and belongs to a pure silicon-based material. The preparation method is characterized in that a molecular sieve-based glass fiber board is made by a microwave-assisted synthesizing technology and a papermaking technology, made into a corrugated shape by hot pressing. The composite material prepared by the method has the advantages of high effective ingredient content, highadsorption performance, high hydrophobic property, high hydrothermal stability, low energy consumption, simple process steps, high material machining operability and the like, and can be widely applied to treatment equipment for organic waste gases such as industrial VOCs (Volatile Organic Compounds).

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a hydrophobic molecular sieve-based composite material and a preparation method thereof. Background technique [0002] Volatile Organic Compounds (Volatile Organic Compounds, VOCs) refers to the general term for volatile organic compounds whose melting point is lower than room temperature and whose boiling point ranges from 50 to 260 °C. VOCs are an important class of gaseous pollutants in the atmosphere. VOCs not only have a direct impact on human health and the ecological environment, but also can generate secondary pollutants by participating in atmospheric photochemical reactions. Therefore, controlling the emission of VOCs and effective governance are of great significance to human health and environmental protection. At present, most of the low-concentration VOCs are treated by adsorption and concentration, and then directly incinerated or catalytically ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30B01D53/02
CPCB01D53/02B01D2257/708B01J20/0251B01J20/26B01J20/28045
Inventor 史东军徐纪清骆坚平郭行潘涛
Owner BEIJING LONGTAO ENVIRONMENTAL TECH CO LTD
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