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Catalyst and material for formaldehyde decomposition

A catalyst and formaldehyde technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as indoor formaldehyde that cannot be practically applied, and achieve stable degradation efficiency, Improve efficiency and increase durability

Inactive Publication Date: 2011-04-20
BEIJING NAWEIDASI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Therefore, the purpose of this invention is to provide a catalyst and material capable of effectively decomposing formaldehyde, so as to overcome the problem that the cold catalyst technology in the prior art cannot be practically applied to control indoor formaldehyde

Method used

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  • Catalyst and material for formaldehyde decomposition
  • Catalyst and material for formaldehyde decomposition
  • Catalyst and material for formaldehyde decomposition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) To manganese dioxide powder with a purity of 75%, add manganese dioxide: alumina: silicon oxide: copper oxide: platinum oxide: magnesium oxide = 100:9:5:3:0.5:1 , mixing, and preparing a doped manganese dioxide catalyst. The melting points of manganese dioxide, aluminum oxide, silicon oxide, copper oxide, platinum oxide and magnesium oxide are 390°C, 2015°C, 1728°C, 1026°C, 450°C and 2852°C, respectively.

[0032] (2) By weight percentage, with 60% PET polyester fiber, 30% polypropylene fiber and 10% low-melting point fiber 4080 (Korean Sehan chemical fiber) to prepare a mixed material, in the mixing and carding process with 130g / m 2 The proportion of doped manganese dioxide catalyst prepared in advance was added.

[0033] (3) For the mixed material containing the doped manganese dioxide catalyst, the fluffy fiber web is reinforced into a nonwoven material by using the puncture effect of the needle.

[0034](4) The needle-punched non-woven mixed material is subjec...

Embodiment 2

[0037] (1) In the manganese dioxide powder with a purity of 87%, add and mix in the ratio of manganese dioxide: alumina: silicon oxide: copper oxide: platinum oxide: magnesium oxide = 100:11:5:5:1:2 , preparation of doped manganese dioxide catalyst.

[0038] (2) By weight percentage, with 45% PET polyester fiber, 30% polypropylene fiber and 25% low-melting point fiber 4080 (Korean Sehan Chemical Fiber) is formulated into mixed material, in mixing carding process, with 180g / m 2 The proportion of doped manganese dioxide catalyst prepared in advance was added.

[0039] (3) For the mixed material containing the doped manganese dioxide catalyst, the fluffy fiber web is reinforced into a nonwoven material by using the puncture effect of the needle.

[0040] (4) The needle-punched non-woven mixed material is subjected to heat roll treatment, and the treatment temperature and pressure are set at 124°C and 1550N / cm 2 . Finally, drying and finishing are carried out in order to obta...

Embodiment 3

[0043] (1) In the manganese dioxide powder with a purity of 95%, add and mix in the ratio of manganese dioxide: alumina: silicon oxide: copper oxide: platinum oxide: magnesium oxide = 100:14:7:6.5:1.5:2.4 , preparation of doped manganese dioxide catalyst.

[0044] (2) By weight percentage, with 40% PET polyester fiber, 27% polypropylene fiber and 33% low-melting point fiber 4080 (Korean Sehan) to prepare mixed material, in the mixing carding process with 210g / m 2 The proportion of doped manganese dioxide catalyst prepared in advance was added.

[0045] (3) For the mixed material containing the doped manganese dioxide catalyst, the fluffy fiber web is reinforced into a nonwoven material by using the puncture effect of the needle.

[0046] (4) The needle-punched non-woven mixed material is subjected to heat roll treatment, and the treatment temperature and pressure are set at 145°C and 1950N / cm 2 . Finally, drying and finishing are carried out in order to obtain a nonwoven ma...

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Abstract

The present invention provides a catalyst and a material for formaldehyde decomposition. The catalyst comprises manganese dioxide, alumina, silica, copper oxide, platinum oxide and magnesia, wherein the weight ratio is: manganese dioxide: alumina: silica: copper oxide: platinum oxide: magnesia = 100:9-15:5-7:3-7:0.5-2:1-3. The material for formaldehyde decomposition comprises the catalyst and a carrier. The doped manganese dioxide catalyst of the present invention can significantly improve the persistence of the manganese dioxide during the formaldehyde decomposition and absorb part of the resultant carbon dioxide. In addition, by adopting a unique non-adhesive agglutination process, the invention can load the doped manganese dioxide catalyst on a carrier, and prepare the material with a formaldehyde degradation rate of above 90% in a short period under natural environment of normal temperature and normal pressure; achieves the advantages of high efficiency and stable degradation efficiency; and can be utilized circularly.

Description

technical field [0001] The invention relates to a catalyst for decomposing formaldehyde, a material containing the catalyst and a preparation method thereof. It specifically relates to a doped manganese dioxide catalyst for decomposing formaldehyde, materials containing the doped manganese dioxide catalyst and a preparation method thereof. Background technique [0002] According to investigations, people spend more than 80% of their time indoors, so the quality of indoor air is directly related to people's health. Formaldehyde (HCHO) is a common indoor air pollutant. It mainly comes from wood-based panels of indoor furniture, adhesives with formaldehyde as the main raw material, and other various decorative materials that contain formaldehyde and emit to the outside world. Formaldehyde is a highly toxic substance and ranks second on the list of priority control of toxic chemicals in my country. Long-term exposure to low-dose formaldehyde can easily cause chronic respirator...

Claims

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Application Information

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IPC IPC(8): B01J23/89B01J31/06B01D53/86B01D53/72
Inventor 郑立平
Owner BEIJING NAWEIDASI TECH
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