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A kind of porous material with core-shell structure for removing formaldehyde and its preparation method

A core-shell structure, porous material technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve the problems of low efficiency and high operating costs, and achieve simple production links, low preparation costs, and simple and stable formulations Effect

Inactive Publication Date: 2019-09-24
广东格仑帝环保材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing methods for removing formaldehyde include window ventilation method, plant absorption method, high-voltage discharge oxidation method, activated carbon adsorption method, and catalytic oxidation method. The above methods have their own characteristics and different effects, but there are certain problems: low efficiency , high operating costs, and some methods produce other harmful gases after removing formaldehyde

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A core-shell structure porous material for removing formaldehyde described in a preferred embodiment of the present invention and a preparation method thereof,

[0039] Material composition by weight percentage: 70% diatomite; 10% inorganic salt; 1% silica airgel; 9% sepiolite fiber; 9% ZSM-5 molecular sieve; 1% water glass glue .

[0040] In this preferred embodiment, the preparation and addition method of the inorganic salt is that the components are composed of 3% cobalt nitrate salt, 30% permanganate, 10% ferrate, 8% cerium nitrate salt and high Chlorate 2%, the balance is water.

[0041] The manufacturing steps and method of the core-shell structure porous material for removing formaldehyde are:

[0042] (1) Fully mix the measured diatomaceous earth in a conical mixer to form a solid powder, set aside;

[0043] (2) Dissolve the measured cobalt nitrate, cerium nitrate, permanganate, ferrate, and perchlorate in water respectively, and then mix them to form a mixed...

Embodiment 2

[0050] This embodiment is similar to the process of the formaldehyde-removing core-shell porous material in embodiment 1, with only some differences in material composition.

[0051] In this preferred embodiment, the composition of the material components by weight percentage includes: diatomite 67%; inorganic salt 15%; silica airgel 5%; sepiolite fiber 5%; ZSM-5 molecular sieve 1 %; water glass glue 8%.

[0052] In this preferred embodiment, the preparation and addition method of the inorganic salt is that the components are composed of 1% cobalt nitrate salt, 60% permanganate, 30% ferrate, 3% cerium nitrate salt and high Chlorate 10%, the balance is water.

[0053] 500 grams of the active material will contain 3.2 mg / m within 14 hours 3 Air purification of formaldehyde, the removal rate of formaldehyde is 98.9%.

Embodiment 3

[0055]This embodiment is similar to the process of the formaldehyde-removing core-shell structure porous material in embodiment 2, with only some differences in the proportion of materials.

[0056] In this preferred embodiment, the material components are composed by weight percentage: 50% of diatomite; 15% of inorganic salt; 5% of silica airgel; 12% of sepiolite fiber; 15% of ZSM-5 molecular sieve %; water glass glue 3%.

[0057] In this preferred embodiment, the method of preparation and addition of inorganic salts is that the components are composed of 2.5% cobalt nitrate salt, 55% permanganate, 22% ferrate, 3.4% cerium nitrate salt and high Chlorate 8%, the balance is water.

[0058] 500 grams of the active material will contain 3.2 mg / m within 12 hours 3 Air purification of formaldehyde, the removal rate of formaldehyde is 99.8%.

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Abstract

The invention discloses a core-shell structure cellular material for removing methanal and a preparation method of the core-shell structure cellular material. The core-shell structure cellular material for removing the methanal is prepared from the following components according to a weight ratio: 50 to 70 percent of clay, 10 to 15 percent of inorganic salt, 1 to 5 percent of aerogel, 5 to 9 percent of sepiolite fiber, 1 to 15 percent of molecular sieve and 1 to 8 percent of glue. The core-shell structure cellular material for removing the methanal is prepared by four production links including material mixing, solution dipping, dry granulation and finishing activation. The new core-shell structure material with coexisting multi-stage pore canals consists of an inner core formed by a composite strong oxidant and a shell layer formed by inorganic fiber, and the new material has the advantages of the performance of efficiently and thoroughly oxidating to remove indoor methanal pollutants, simple production links, lower preparation cost and wide popularization and application prospect.

Description

technical field [0001] The invention belongs to the technical field of new environmental protection materials, and in particular relates to a porous material with a core-shell structure for removing formaldehyde and a preparation method thereof. Background technique [0002] Formaldehyde is an important organic raw material, mainly used in the plastic industry such as phenolic resin, urea-formaldehyde plastic - electric jade, synthetic fiber such as synthetic vinylon - polyvinyl formal, leather industry, medicine, dyes, etc. In addition, formaldehyde has low boiling point volatility, which can irritate the eyes and cause allergies, and the absorption of formaldehyde by the human body can easily cause leukemia and other cancers. However, formaldehyde is contained in furniture and interior decoration materials, and it is released slowly for several years. Formaldehyde has become one of the main indoor air killers. [0003] In recent years, indoor air quality has become a prom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/81B01D53/72
Inventor 刘自力
Owner 广东格仑帝环保材料科技有限公司
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