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Ozonolysis catalyst and preparation method thereof

A technology of ozone decomposition and catalyst, applied in separation methods, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of complex equipment structure, difficulty in widespread promotion, high production cost, etc., and achieve simple preparation process and convenient use , low cost effect

Active Publication Date: 2010-06-30
亚都科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing ozonolysis catalysts use honeycomb ceramics or activated carbon as the base material. Among them, the ozonolysis catalyst with activated carbon as the carrier has a low effective utilization rate of the catalyst itself, and the efficiency of decomposing the ozone gas passing through the surface of the catalyst is low.
[0004] At the same time, the equipment structure is complex, and the application is not simple and fast enough.
However, the catalyst preparation process of other carriers is relatively complicated, especially the use of precious metals, which has high production costs and is not conducive to industry promotion.
There are also some catalysts that have certain requirements for the use environment, which will increase the cost to a certain extent in practical applications, and even cause difficulties in use, making it difficult to be widely promoted.

Method used

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  • Ozonolysis catalyst and preparation method thereof
  • Ozonolysis catalyst and preparation method thereof
  • Ozonolysis catalyst and preparation method thereof

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preparation example Construction

[0026] Correspondingly provide the preparation method of above-mentioned ozonolysis catalyst, see below figure 2 Shown ozonolysis catalyst preparation flowchart, this preparation method is described in detail, comprises the following steps:

[0027] Step 210, preparing active ingredient solution:

[0028] Ferric nitrate--Fe(NO 3 ) 3 As an active component, Fe(NO 3 ) 3 solution; or manganese nitrate--Mn(NO 3 ) 2 As an active component, Mn(NO 3 ) 2 solution.

[0029] Step 220, cleaning and drying the nickel foam as the carrier:

[0030] The nickel foam that will contain irregular pores, for example, adopts 70 mesh, 80 mesh, 100 mesh or 120 mesh (the mesh number adopts the American standard, and the selected mesh number takes into account the two factors of large catalyst carrying capacity and small wind resistance) The nickel foam was washed with 0.1M KOH and 0.1M HCl respectively (M is the molar concentration, ie mol / L), rinsed with distilled water, and dried at 120°...

Embodiment 1

[0038] The preparation mass fraction is 5% Fe(NO 3 ) 3 Active ingredient solution. Immerse the cleaned and dried nickel foam into the active component solution for 10 to 30 minutes, take it out and dry it in an oven at 80°C to 100°C. The dried catalyst carrier was baked at 300° C. for 2 hours, and cooled naturally in the furnace. Repeat the impregnation, drying, and baking operations 1 to 2 times to adjust the loading amount of the catalyst active component. The mass percentage of iron oxide in the prepared ozonolysis catalyst is about 1-2%.

Embodiment 2

[0040] The preparation mass fraction is 10% Fe(NO 3 ) 3 solution. Immerse the cleaned foamed nickel into the active component solution for 10 to 30 minutes, take it out and dry it in an oven at 80°C to 100°C. The dried catalyst carrier was baked at 300° C. for 2 hours, and cooled naturally in the furnace. Repeat the impregnation, drying, and baking operations 1 to 2 times to adjust the loading amount of the catalyst active component. The mass percentage of iron oxide in the prepared ozonolysis catalyst is about 2-5%.

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Abstract

The invention provides an ozonolysis catalyst which comprises metal foamed nickel and manganese or iron oxide, wherein the metal foamed nickel is adopted as a catalyst carrier and a catalyst auxiliary active component; and the manganese or iron oxide adopted as a main active component is coated on the surface of the foamed nickel by a soaking way. Obviously, the cost of preparation materials is low. The invention provides a preparation method of the ozonolysis catalyst, which comprises the following steps of: A. mixing an active component solution comprising manganese nitrate or ferric manganese nitrate; B. soaking the foamed nickel adopted as a carrier into the active component solution; and C. drying the soaked carrier and baking at a certain temperature. Accordingly, the preparation process is simple and convenient.

Description

technical field [0001] The invention relates to the technical field of ozonolysis catalysts, in particular to an ozonolysis catalyst and a preparation method thereof. Background technique [0002] Ozone is a strong oxidant and a broad-spectrum bactericidal disinfectant. It is widely used in water treatment, medical and sanitation, food preservation and other industries. The long half-life of ozone leads to its low utilization rate. In the actual use process, it is easy to form a high concentration of residual ozone. If it is directly discharged into the atmosphere, it will cause environmental pollution. In addition, in people's living space, a certain amount of ozone will also be produced, such as when the copier is working, and when the high-voltage discharge is performed. The ozone concentration in the working area exceeds 0.06mg / m 3 Ozone can endanger people's health. For this reason, harmless conversion treatment is required for the discharged ozone. [0003] Most of...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01J23/755B01D53/66B01D53/86
CPCY02A50/20
Inventor 刘东方赵付才周长龙
Owner 亚都科技集团有限公司
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