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Preparation method of tiny hole type multihole clay heterogeneous material

A clay and heterogeneous technology, which is applied in the field of preparation of microporous porous clay heterogeneous materials, can solve the problems that the adsorption effect is difficult to meet the practical requirements, and achieve the effects of reducing indoor health risks, enhancing adsorption capacity, and wide application prospects

Active Publication Date: 2014-03-26
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a mesoporous adsorption material (pore diameter>2nm), the traditional PCH material is difficult to achieve practical requirements for the adsorption effect of low-concentration organic pollutants in indoor air. Material

Method used

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  • Preparation method of tiny hole type multihole clay heterogeneous material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Mix 180g ethyl orthosilicate and 60g diphenyldiethoxysilane evenly to form 240g mixed liquid, mix 2g organic bentonite and 40g dodecylamine, stir at 50°C for 30min, then add 240g mixed liquid, stir at 35°C for 12h ; The solid obtained after suction filtration was air-dried naturally; the muffle furnace was programmed to heat up to 600°C at 2°C / min, and kept for 4 hours to obtain a microporous PCH material, which was designated as PCH25.

[0019] as table 1, figure 1 As shown, the specific surface area and micropore specific surface area of ​​PCH25 are larger than that of PCH0; compared with PCH0, the micropore content of PCH25 is significantly increased, and the mesopore content is significantly reduced, indicating that the adsorption potential of PCH25 is significantly stronger than that of PCH0.

[0020] Table 1 Specific surface area and micropore specific surface area of ​​different PCH adsorption materials

[0021] Adsorbent material Specific surface are...

Embodiment 2

[0023] Mix 120g ethyl orthosilicate and 120g diphenyldiethoxysilane evenly to form 240g mixed solution, mix 2g organic bentonite and 40g dodecylamine, stir at 50°C for 30min, then add 240g mixed solution, stir at 35°C for 12h , to obtain the precursor solution; the solid obtained after suction filtration of the precursor solution was naturally air-dried; the muffle furnace was programmed to heat up to 600°C at 2°C / min, and kept at 600°C for 4 hours to obtain the microporous PCH material.

Embodiment 3

[0025] Mix 60g ethyl orthosilicate and 180g diphenyldiethoxysilane evenly to form 240g mixed solution, mix 2g organic bentonite and 40g dodecylamine, stir at 70°C for 30min, then add 240g mixed solution, stir at 35°C for 12h , to obtain a precursor solution; the solid obtained after suction filtration of the precursor solution was dried at 70°C; the muffle furnace was programmed to heat up to 600°C at 2°C / min, and kept at 600°C for 4 hours to obtain a microporous PCH material.

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Abstract

The invention discloses a preparation method of a micro-hole type multihole clay heterogeneous material. The method comprises the following steps: uniformly mixing tetraethoxysilane and diphenyl dimethyldiethoxylsilane at a mass ratio of 1:(0.1-100) to form a mixing solution; fully uniformly mixing lauryl amine, organobentonite and the mixing solution at a mass ratio of (1-40);1:120 to obtain a front body solution; carrying out water bath reaction on the front body solution at 30-70 DEG C for 6-18 hours, carrying out suction filtration, naturally blowing or drying the obtained solid, placing the solid in a muffle furnace at 450-650 DEG C, and calcining for 2-6 hours to obtain the micro-hole type multihole clay heterogeneous material. The prepared material provided by the invention has the advantages that the adsorptive property of an indoor organic pollutant is better than that of the PCH material synthetized by the traditional method, and the material has wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of adsorbents, and in particular relates to a preparation method of a microporous porous clay heterogeneous material. Background technique [0002] Indoor air pollution seriously endangers human health, and its purification technology has attracted more and more attention. Adsorption has the advantages of high efficiency, low cost, non-toxicity, and easy commercial production, and is widely used in indoor air purification. Common adsorption materials include activated carbon and molecular sieves. Activated carbon is often used to remove hydrophobic organic pollutants, but it is difficult to effectively remove polar organic pollutants. Molecular sieves can be used to adsorb and purify hydrophilic organic pollutants, but the cost is high. Porous clay heterogeneous material (referred to as PCH) is a porous material with a hydrophilic surface, which can be used to adsorb and purify hydrophilic organic pollutan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30B01D53/02
Inventor 朱利中赵璞
Owner ZHEJIANG UNIV
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