Supported silver-manganese catalyst as well as preparation method and application thereof

A technology of manganese catalyst and supported silver, applied in the field of supported silver-manganese catalyst and its preparation, can solve problems such as pollution and ozone pollution, achieve the effect of large specific surface area and solve the problem of ozone pollution

Pending Publication Date: 2021-03-12
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The object of the present invention is to provide a kind of loaded silver-manganese catalyst and its preparation method and application, described loaded silver-manganese catalyst comprises porous square type α-Mn 2 o 3 And the simple substance of Ag loaded on it, the mass content of the simple substance of Ag is 1 to 4%, it can decompose ozone efficiently for a long time, and can handle various gases containing ozone, and it is expected to be used on the outer surface of buildings or radiators of motor vehicles etc. to solve the problem of ozone pollution in the atmosphere, and can be applied to high-altitude aircraft to solve the problem of ozone pollution

Method used

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  • Supported silver-manganese catalyst as well as preparation method and application thereof
  • Supported silver-manganese catalyst as well as preparation method and application thereof
  • Supported silver-manganese catalyst as well as preparation method and application thereof

Examples

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Embodiment 1

[0056] This embodiment provides a supported silver-manganese catalyst, which is prepared by the following method:

[0057] (1) Preparation of porous cube-shaped α-Mn 2 o 3 :

[0058] Dissolve 0.79g of potassium permanganate powder in 90mL of deionized water to form potassium permanganate solution, stir well, then add 0.99g of glucose powder into the above solution, stir for 30min until the solution is evenly mixed, then add the above solution into the reaction kettle Seal it and place it in an oven at 150°C for 10 hours. After the reaction is complete, the hydrothermal kettle is cooled to room temperature, and the obtained precipitate is suction-filtered, washed until neutral, and dried at 100°C for 20 hours to obtain cubic MnCO. 3 powder, and then the obtained MnCO 3 After the powder was calcined at 600 °C for 3 h, the microscopic morphology of α-Mn with porous cubes was obtained. 2 o 3 powder, the porous cube-type α-Mn 2 o 3 The SEM image and HRTEM image of the carrie...

Embodiment 2

[0062] This embodiment provides a supported silver-manganese catalyst, which is prepared by the following method:

[0063] (1) Preparation of porous cube-shaped α-Mn 2 o 3 :

[0064] Dissolve 0.88g of potassium permanganate powder in 90mL of deionized water to form a potassium permanganate solution, stir well, then add 1.2g of polyvinylpyrrolidone (PVP) powder into the above solution, stir for 25min until the solution is evenly mixed, and mix the above solution Put it into the reaction kettle and seal it, and put it in an oven at 160°C for 11 hours. After the reaction is completed, the hydrothermal kettle is cooled to room temperature, and the obtained precipitate is suction-filtered, washed until neutral, and dried at 120°C for 18 hours to obtain a cube with a microscopic shape. MnCO 3 powder, and then the obtained MnCO 3 After the powder was calcined at 800°C for 4 hours, the microscopic morphology of α-Mn with porous cubes was obtained. 2 o 3 powder;

[0065] (2) Pre...

Embodiment 3

[0068] The only difference between this example and example 1 is that the Ag load is adjusted to 2%, and other conditions and parameters are exactly the same as those of example 1, which are recorded as 2%Ag-α-Mn 2 o 3 -C silver manganese catalyst.

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Abstract

The invention provides a supported silver-manganese catalyst as well as a preparation method and application thereof. The supported silver-manganese catalyst comprises porous cube-shaped alpha Mn2O3 and Ag elementary substance loaded on the porous cube-shaped alpha Mn2O3, the mass content of the Ag elementary substance is 1-4%, ozone can be efficiently decomposed for a long time, various ozone-containing gases can be treated, and the catalytic activity of the supported silver-manganese catalyst is improved. The catalyst is expected to be used for solving the ozone pollution problem in the atmosphere on the outer surface of a building or a motor vehicle radiator, and can be applied to high-altitude aircrafts to solve the ozone pollution problem.

Description

technical field [0001] The invention belongs to the field of catalysts, and in particular relates to a supported silver-manganese catalyst and its preparation method and application. Background technique [0002] Ozone is a strong oxidant. When the concentration of ozone entering the indoor environment is too high, it needs to be purified. Decomposition is usually used to purify ozone. Among them, the catalytic decomposition method is the most widely used. The methods of ozone decomposition at home and abroad include activated carbon method, thermal decomposition method, electromagnetic radiation decomposition method, liquid medicine absorption method and catalytic decomposition method. [0003] Activated carbon method is commonly used in industrial production. Although this method is simple and convenient, the activated carbon is easy to lose its activity after a long time of use, and needs to be replaced or regenerated frequently, and it is only suitable for low-concent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/68B01J35/10B01J37/08B01D53/86B01D53/66
CPCB01J23/688B01J35/1004B01J35/0013B01J37/082B01J35/006B01J35/023B01D53/8675Y02A50/20
Inventor 贺泓马金珠李晓彤
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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