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High aperture-ratio foam manganese dioxide catalyst material and preparation method and use thereof

A catalytic material and foam-like technology, which is applied in the field of high-porosity foam-like MnO2 catalytic material and its preparation, can solve the problems of low bonding strength between the manganese dioxide catalytic membrane and the substrate, the number of pieces loaded at one time, and the low purity of the catalyst. , to achieve the effect of improving the catalytic effect and charge and discharge performance, low cost, and increasing the reaction area

Inactive Publication Date: 2009-04-01
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of high porosity foamy MnO that can be catalyzed with high efficiency at room temperature 2 Catalyst materials, preparation methods and applications, solve the problem that the existing two-dimensional network structure manganese dioxide catalyst has a small reaction area, a large number of pieces can be loaded at one time, and the bonding strength between the manganese dioxide catalytic film and the substrate is low, and the catalytic layer is easily peeled off during use. , and MnO 2 Problems such as low purity of catalyst, poor catalytic effect and short service life

Method used

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  • High aperture-ratio foam manganese dioxide catalyst material and preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Foam sponge material (pore diameter is about 550 microns) is first sensitized, and the specific process and process parameter range of sensitization are: put the sample into sensitization solution (stannous chloride 20g / L, mass concentration 37% hydrochloric acid 40ml / L and distilled water surplus), after soaking for 3 minutes, take out and wash and then immerse in the solution containing oxidant at room temperature (silver nitrate 1.7g / L, ammoniacal liquor is added to the solution transparency and distilled water surplus, in the present embodiment Soak in ammonia water (10ml) for 10 minutes to form an active metal layer on the surface of the substrate, then take 200ml of electroless copper plating solution and dilute it to 1L with water, soak the above-mentioned treated material in it for 20 seconds (to prevent remaining in the sample The activation solution on the surface is brought into the electroless plating solution), directly enters the electroless copper plating ...

Embodiment 2

[0042] The difference from Example 1 is:

[0043] Foam sponge material (pore size is about 550 microns) is first sensitized, and at room temperature, the sample is put into sensitized solution (50ml / L of hydrochloric acid 50ml / L and distilled water surplus of stannous chloride 10g / L, mass concentration 37%) After soaking for 5 minutes, take out the washing and then immerse in the solution containing oxidant at room temperature (silver nitrate 2.0g / L, ammoniacal liquor is added to the solution transparent and distilled water surplus, ammoniacal liquor addition is 12ml in the present embodiment) and soaks in 15 minutes to make Form an active metal layer on the surface of the substrate, then take 200ml of electroless copper plating solution and add water to dilute it to 1L, soak the above-mentioned treated material in it for 30 seconds for a short time, then soak it directly in the electroless copper plating solution at room temperature without washing with water In 8 minutes, co...

Embodiment 3

[0047] The difference from Example 1 is:

[0048] Foam sponge material (pore diameter is about 550 microns) is first sensitized, and at room temperature the sample is put into the sensitization solution (hydrochloric acid 40ml / L and distilled water surplus of stannous chloride 30g / L, mass concentration 37%) After soaking for 4 minutes, take out the washing and then immerse in the solution containing oxidant (silver nitrate 1.5g / L, ammoniacal liquor is added to the solution transparency and distilled water surplus at room temperature, and the ammoniacal liquor addition is 8ml in the present embodiment) and soak for 20 minutes. Form an active metal layer on the surface of the substrate, then take 200ml of electroless copper plating solution and add water to dilute it to 1L, soak the above-mentioned treated material in it for 10 seconds, and then soak it in the electroless copper plating solution for 10 minutes at room temperature without washing with water , copper plating is ta...

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Abstract

The invention relates to a high porosity cystose MnO2 catalytic material and a preparation and the application thereof, solving problems of catalyzing highly efficiently, prolonging the service life of catalyzed matters, improving the purity of the catalyzed matters, improving the catalytic effect and the like while ozone flows through a carrier. The catalytic material can be applied to an ozone converter of an ultraviolet spectrophotometry ozone analyzer based on a microprocessor and used as a highly efficient catalytic active matter for alkaline manganese batteries. Foam sponge is used as base material. After the conductive treatment, the foam sponge is plated with copper on the surface firstly. When Cu plated film reaches the required thickness, the foam sponge is taken out to be dried. The heat treatment is implemented on the foam sponge in a vacuum furnace or a furnace which is protected with argon. A cystose copper mesh is molded. Then, an Mn plated layer is deposited on the surface of the cystose copper mesh. When the Mn plated layer reaches the required thickness, the mesh is taken out and dried. Under the common oxygen atmosphere of an atmospheric pressure, the oxidation treatment is implemented on the copper mesh to obtain the high porosity cystose MnO2 catalytic material. The porosity of the material is 85-95 percent, and the specific area is regulated in the scope of 12.6m<2> / m<3>-29.6m<2> / m<3> according to practical requirements.

Description

Technical field: [0001] The invention relates to a manufacturing technology of a high-porosity foam-like material, specifically a high-porosity foam-like MnO 2 The catalytic material and its preparation method and application can be applied to the ozone catalytic material of the ultraviolet photometric ozone analyzer based on the microprocessor and the high-efficiency catalytic active material of the alkaline manganese battery. Background technique: [0002] Due to the destruction of the atmospheric ozone layer due to man-made reasons, even sunlight has become no longer safe. The international community believes that the depletion of the ozone layer, climate warming, and sharp decline in biodiversity have become the three most serious global environmental problems currently facing. In order to protect the ozone and enjoy the sunshine, countries in recent years have strengthened environmental monitoring and introduced some effective improvement measures. During the "Tenth F...

Claims

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Application Information

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IPC IPC(8): B01J23/889H01M4/06H01M4/90
CPCY02E60/50
Inventor 于志明
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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