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Mesoporous manganese oxide nanometer material capable of removing ozone and formaldehyde in air at room temperature simultaneously

A nanomaterial, manganese oxide technology, applied in the field of mesoporous manganese oxide nanomaterials, the above-mentioned mesoporous materials, and the preparation of mesoporous materials, can solve the problems of expensive catalysts and the like, and achieve excellent economy, high stability, and good removal ability. Effect

Inactive Publication Date: 2012-12-26
SHANGHAI NIUYI NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high Pt content (12%) in the catalyst makes the price of the catalyst expensive, so this catalyst can only be used in special occasions such as military industry or aerospace
Chinese patent CN1698932A uses gold-loaded rare earth oxide or adsorbed composite oxide catalyst, which can achieve better results at a temperature of 80-100 ° C, but high humidity and heat energy input are the biggest obstacles to the wide application of this catalyst

Method used

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  • Mesoporous manganese oxide nanometer material capable of removing ozone and formaldehyde in air at room temperature simultaneously
  • Mesoporous manganese oxide nanometer material capable of removing ozone and formaldehyde in air at room temperature simultaneously
  • Mesoporous manganese oxide nanometer material capable of removing ozone and formaldehyde in air at room temperature simultaneously

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of Mesoporous Manganese Oxide Nanomaterials. Add a certain amount of PVP to NaMnO containing 0.01mol 4 , KMnO 4 Or add 40ml trioctylamine to 250ml aqueous solution of soluble manganese salt under constant stirring to obtain a sol, then seal and crystallize at 50°C for 24h, then transfer the sol to a kettle with a Teflon liner , hydrothermal at 100°C for 24h, the resulting product was repeatedly washed with deionized water and ethanol, then placed in an electric vacuum oven and dried in vacuum at 100°C for 24h; finally put into a muffle furnace and calcined at 200-500°C for 6h The template agent is removed, and the obtained powder is the mesoporous manganese oxide sample.

[0030] Preparation of Mesoporous Manganese Oxide Nanomaterials Supported on Honeycomb Ceramic Support. A certain amount of mesoporous manganese oxide nanomaterial is weighed, and a certain proportion of deionized water and binder are added. According to the requirements of viscosity an...

Embodiment 2

[0035] The preparation of mesoporous manganese oxide nanomaterials is the same as in Example 1

[0036] Before the catalyst performance test, the catalyst was not treated in any way. The powder catalyst was pressed into tablets and crushed to make 0.25-0.50mm particle samples, and then 0.2g particle samples were placed in a glass tube, at room temperature (20°C) and relative Under the condition of humidity of 50%, pass through containing 0.001-50mg / m 3 For ozone air, the wind speed is 2.5m / s. Ozone at the reactor outlet was detected with an ozone analyzer. . The results are shown in Table 2.

[0037] Table 2. Test results for catalytic ozone removal.

[0038]

[0039] Example three

[0040] The preparation of mesoporous manganese oxide nanomaterials is the same as in Example 1

[0041] Before the catalyst performance test, the catalyst was not treated in any way. The powder catalyst was pressed into tablets and crushed to make 0.25-0.50mm particle samples, and then 0.2g...

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Abstract

The invention relates to a mesoporous manganese oxide nanometer material capable of removing ozone and formaldehyde in air at room temperature simultaneously, which relates to the field of catalysis and environmental protection. The mesoporous manganese oxide nanometer material is characterized by adopting honeycomb ceramics as a carrier, and carrying mesoporous manganese oxide as a substrate. The mesoporous manganese oxide is characterized in that: the aperture of a mesopore is 0.5-3nm. The monolithic catalyst provided by the invention can be used for completely and simultaneously removing the formaldehyde and the ozone in the air in realistic environment with room temperature and normal atmospheric humidity, and has high effect, stability and no side effect.

Description

technical field [0001] The invention relates to a mesoporous manganese oxide nanometer material for simultaneously removing ozone and formaldehyde in air at room temperature, and relates to the fields of catalysis and environmental protection. It is characterized in that the honeycomb ceramic is used as the carrier, and the oxidized mesoporous manganese is first loaded as the matrix. The mesoporous manganese oxide matrix is ​​characterized in that the mesopores have a pore diameter of 0.5-3 nm. The monolithic catalyst of the present invention can completely remove formaldehyde and ozone from the air at the same time in a real environment of room temperature and humidity, and has high efficiency, stability and no side effects. [0002] The present invention also relates to the preparation method of the above-mentioned mesoporous material. [0003] The invention also relates to the application of the above-mentioned mesoporous material to various environmental protection and t...

Claims

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Application Information

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IPC IPC(8): C01G45/02B82B3/00B01J23/34B01D53/86B01D53/66B01D53/72
CPCY02A50/20
Inventor 唐文明
Owner SHANGHAI NIUYI NEW ENERGY TECH
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