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Preparation method of moisture-proof and efficient ozone decomposition agent

A high-efficiency technology for ozone decomposition, applied in the direction of separation methods, catalyst activation/preparation, chemical instruments and methods, etc., can solve the problems of not being practically applicable, relying on imports, etc., and achieve superior catalytic performance, low cost, and porosity rich effect

Pending Publication Date: 2021-07-09
江苏治水有数环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although a lot of research work on ozone decomposition catalysts has been carried out in China, it has not yet reached the level of practical application in China, and it still mainly relies on imports.

Method used

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  • Preparation method of moisture-proof and efficient ozone decomposition agent
  • Preparation method of moisture-proof and efficient ozone decomposition agent
  • Preparation method of moisture-proof and efficient ozone decomposition agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] In order to make the invention, the present invention is further illustrated in the following description of the invention, and the specific embodiments described herein are intended to be used herein, and is not intended to limit the invention.

[0042] The present invention adds a structural template material to the process of synthesizing manganese dioxide in the process of hydrothermal, first obtains a low particle size and a high-specific surface area of ​​mesoporous manganese dioxide material, and then the reaction is reacted by one step, and the high-specific surface area is obtained. The pore manganese dioxide substrate is doped with transition metal ions while transitioning the γ or δ phase manganese dioxide of low catalytically active crystal phase into high active crystal phase, and achieves transition metal ion helping catalyst doping and The low-catalytic activated crystal phase transitions to high-catalytic activated crystal phase manganese dioxide, and the re...

Embodiment 2

[0059] The prepared steps are the same as in Example 1, and its parameters are specifically as follows:

[0060] Precraft manufacturing: 5 ~ 10 wt% potassium permanganate, 2.5 wt% polyethylene glycol; solvent is water, and the mixture is stirred at 50 ° C for 2 h, and the aging 12h; 60 ° C drying 12h.

[0061] Doped powder: 20 wt% of the above precursor, 2.5 wt% copper sulfate, 1.5 wt% cobalt sulfate, 0.4 wt% graphite powder, dispersion of water, reaction 12h at 150 ° C, filtrate and dried at 80 ° C for 12h, Grinding into 400 mesh powder.

[0062] Granulation step: 75% of the above-described doped powder, 10 wt% mesh silica, 15 wt% concave ceiling, adding an appropriate amount of water uniformly mixed, using extrusion granulation machine into 5 * 10 mm size particles, 2 mol / L nitric acid solution Acidification treatment of 3 h, baked at 350 ° C for 2 h, resulting in a finished product.

Embodiment 3

[0064] The prepared steps are the same as in Example 1, and its parameters are specifically as follows:

[0065] Precraft manufacturing: 5 to 10 wt% permanganate, 2 wt% citric acid; solvent is water, heat and stirred at 70 ° C for 2 h, and agonized 6 h; at 80 ° C for 12 h.

[0066] Doped powder: 30 wt% of the precursor, 5 wt% copper sulfate, 0.4 wt% carbon nanotubes, dispersion liquid, 15H, 150 ° C, taking filtration and dried at 80 ° C for 12 h, ground into 400 mesh powder.

[0067] Glym step: 60% of the above-described doped powder, 10 wt% mesh silica, 10 wt% magnesium oxide, 20 wt% irich soil, use rolling granulator sphere, add appropriate amount of water, a circle of diameter 2 to 4 mm size The ball was acidified with 1 mol / L nitric acid solution for 3 hours, and 3 hours were taken at 350 ° C to obtain a finished product.

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Abstract

The invention relates to a preparation method of a moisture-proof and efficient ozone decomposition agent, the preparation method comprises the step of synchronously carrying out transition metal ion doping and manganese dioxide high-activity crystalline phase conversion, and specifically comprises the following steps: adding a framework material in a process of synthesizing manganese dioxide by a hydrothermal method to obtain a mesoporous manganese dioxide material with a low particle size and a high specific surface area, realizing transition metal ion co-catalyst doping and conversion from a low catalytic activity crystal phase to a high catalytic activity crystal phase of manganese dioxide through a post-treatment reaction, and performing the conventional granulation process on the obtained ozone destroying active component to finally obtain the high-environment-humidity-resistant mesoporous ozone destroying agent. The agent has the advantages that the operation is simple, additional heating is not needed, ozone tail gas is efficiently degraded at low temperature, the cost is low, and excellent catalytic performance can still be kept in a high-humidity environment.

Description

Technical field [0001] The present invention relates to the preparation of ozone resolution, in particular a method of preparing a moisture-resistant highly efficient ozone resolution. Background technique [0002] As the country has further attaches great importance to ozone pollution control, there has been a growing ozone pollution control method, which mainly has adsorption, thermal dispensing, plasma decomposition, drug absorption, and catalytic decomposition. [0003] The adsorption method is to utilize a porous adsorbent and its modifier, such as activated carbon, and react to ozone, and react with the surface of the ozone to achieve the effect of eliminating ozone pollution. This is because activated carbon has a porous structure and a certain reducing. However, this method is only suitable for processing low concentrations of ozone, and it is not applicable to high concentrations. The activated carbon exposed to the ozone environment is prone to passivation, so it needs ...

Claims

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Application Information

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IPC IPC(8): B01J23/34B01J23/889B01J37/10B01J37/00B01J37/08B01D53/66B01D53/86
CPCB01J23/34B01J23/8892B01J23/002B01J37/10B01J37/0063B01J37/08B01D53/66B01D53/8675B01J2523/00B01J2523/3712B01J2523/41B01J2523/72B01J2523/17B01J2523/845B01J2523/22B01J2523/847Y02A50/20
Inventor 刘雪菲
Owner 江苏治水有数环保科技有限公司
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