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Load type porous adsorption catalytic material and preparation method and application thereof

A technology for porous adsorption and catalytic materials, which is applied in chemical instruments and methods, separation methods, catalysts for physical/chemical processes, etc. It can solve the problem that functional groups or ion loadings are difficult to bake, and the efficacy and pore structure of formaldehyde adsorption are not informed. It is not easy to control and other problems, and achieves the effect of not easy to fall off, inhibiting association, and removing formaldehyde.

Inactive Publication Date: 2019-04-12
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, silica is used as a carrier, and there are problems such as single pore structure and difficult control of pore structure, and it is difficult to bake functional groups or ion loads, and it is easy to agglomerate and fall off after loading, which greatly affects the adsorption and degradation of formaldehyde by silica. performance
[0004] The patent "A Metal Phthalocyanine-loaded Adsorbent and Its Preparation and Application" (CN104759259B) discloses a metal phthalocyanine-loaded adsorbent with silica as a carrier. The effect of adsorbing formaldehyde, and its material (silicon dioxide) is powdery, difficult to recycle

Method used

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Examples

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Embodiment 1-1

[0030] Embodiment 1-1, the preparation method of supported porous adsorption catalytic material:

[0031] In this embodiment, the hierarchical porous silica bulk material is used as the carrier, cobalt phthalocyanine (blue-black) is used as the photocatalytic material, and N,N-dimethylformamide is used as the solvent.

[0032] In this example, the hierarchical porous silica block material is made of triblock copolymer polyoxyethylene-polyoxypropylene-polyoxy Ethylene (PluronicP123) is a hierarchical porous silica bulk material prepared with through macropores, a co-continuous skeleton, and regular spherical mesoporous skeletons, that is, the hierarchical porous silica prepared in Example 2-2 of this patent Silica bulk material with a specific surface area of ​​708m 2 / g.

[0033] The specific preparation method is as follows:

[0034] S1. Add N,N-dimethylformamide to 5 g of cobalt phthalocyanine and make the volume to 1 L. Dissolve cobalt phthalocyanine in N,N-dimethylforma...

Embodiment 1-2

[0040] In this embodiment, the hierarchical porous silica bulk material is used as the carrier, iron phthalocyanine (dark green) is used as the photocatalytic material, and N,N-dimethylacetamide is used as the solvent.

[0041] The specific preparation method is as follows:

[0042] S1. Add N,N-dimethylacetamide to 4g of iron phthalocyanine to make the volume to 1L. Dissolve iron phthalocyanine in N,N-dimethylacetamide to obtain iron phthalocyanine with a concentration of 4mg / mL solution;

[0043] S2. Use the excessive impregnation method to immerse the hierarchical porous silica block material into the iron phthalocyanine solution obtained in step S1, and ultrasonicate at room temperature (25° C.) for 15 minutes (ultrasonic power is 900w). At this time, the hierarchical porous silica block The material is fully impregnated with the iron phthalocyanine solution to obtain a hierarchical porous silica bulk modified material.

[0044] S3. Fully wash the hierarchical porous sili...

Embodiment 2-1

[0046] Example 2-1, the preparation method of supported porous adsorption catalytic material:

[0047] In this embodiment, the macroporous silica block material is the carrier, iron phthalocyanine (dark green) is the photocatalytic material, and N,N-dimethylacetamide is the solvent;

[0048]In this example, the macroporous silica bulk material was prepared according to the method proposed in "Preparation of SiO2 Porous Blocks by Sol-gel with Phase Separation, Acta Physicochemical Sinica, 2013, 29(3), 646-652":

[0049] That is, with methyl orthosilicate as the precursor, 0.01mol L -1 Hydrochloric acid is used as a catalyst, propylene oxide is used as a gel accelerator, and polyethylene oxide (Mv=10000) is used as a phase separation inducer. Under the condition that the molar ratio of PEO / TMOS is 0.0018, the co-continuous skeleton with large pores is prepared. The macroporous porous bulk material, that is, the macroporous silica bulk material. The macroporous silica bulk mate...

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Abstract

The invention provides a preparation method of a load type porous adsorption catalytic material, which comprises the following steps of: immersing a silicon dioxide porous block material into a 3-5mg / ml metal phthalocyanine solution, and performing ultrasonic treatment for 10-20min at normal temperature to obtain a silicon dioxide porous block modified material; and washing and drying the silicondioxide porous block modified material obtained in step 1 to obtain the load type porous adsorption catalytic material. The invention also provides a load type porous adsorption catalytic material prepared by using the method, which adsorbs formaldehyde and has high formaldehyde removing capability.

Description

technical field [0001] The invention relates to the technical field of catalytic materials, in particular to a supported porous adsorption catalytic material and its preparation method and application. Background technique [0002] The problem of air pollution has attracted widespread attention, and the problem of formaldehyde pollution is particularly prominent. As a kind of indoor pollutant gas, formaldehyde will cause potential harm to human health when the concentration reaches 600 micrograms per cubic meter. In recent years, the purification methods of formaldehyde pollution in indoor air mainly include adsorption method, photocatalytic oxidation method and chemical treatment method. The adsorption method is to use porous solids, such as zeolite, activated carbon, porous clay and other adsorbents, to adsorb formaldehyde present in the air on its surface, thereby removing formaldehyde. Photocatalytic oxidation utilizes light-responsive catalysts such as TiO 2 , ZnO, W...

Claims

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Application Information

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IPC IPC(8): B01J31/22B01D53/86B01D53/72B01J20/22B01J20/28B01J35/10
CPCB01D53/8668B01J20/103B01J20/223B01J20/28054B01J31/183B01J35/60
Inventor 郭兴忠冯道言刘威杨辉
Owner ZHEJIANG UNIV
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