Catalyst for eliminating ozone under room temperature and ambient moisture and preparation method of catalyst

A catalyst, room temperature technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, heterogeneous catalyst chemical elements, etc., can solve the problem of high catalyst cost, low ozone elimination rate, and unfavorable promotion and use and other problems, to achieve the effect of large specific surface area, cost reduction and high elimination rate

Inactive Publication Date: 2017-05-31
BEIJING YIJING YOUZHI ENVIRONMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Catalytic elimination of ozone is an effective technology to reduce indoor ozone pollution. However, the existing catalysts for catalytic eliminatio

Method used

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  • Catalyst for eliminating ozone under room temperature and ambient moisture and preparation method of catalyst
  • Catalyst for eliminating ozone under room temperature and ambient moisture and preparation method of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0029] Raw materials: the carrier is a mixture of aluminum oxide and ceria; the active component of noble metal is palladium; the additive component is sodium nitrate;

[0030] Preparation:

[0031] Step S1, grinding 0.1 g of the precious metal active component palladium into a 400-mesh fine powder, putting the fine powdered palladium into water, ultrasonically dispersing for 20 minutes, and then adding the auxiliary component sodium nitrate to the solution, the sodium content of which is 0.09g, palladium is mixed with the auxiliary component, ultrasonically reacted for 2 hours, and colloid is made;

[0032] Step S2, disperse 100g of the selected carrier into the above-mentioned colloid, place it in a 100-degree water bath for 50 hours, after the deposition is complete, filter and wash, put the filter cake in an oven, the initial temperature of the oven is 70 degrees, press 0.2 degrees / Make the oven temperature rise to 90 degrees at a heating rate of 1 minute, and dry at 90 ...

Embodiment 3

[0036] Raw materials: the carrier is a mixture of ceria and nickel oxide; the active component of noble metal is palladium; the auxiliary component is potassium oxide;

[0037] Preparation:

[0038] In step S1, 0.01 g of the noble metal active component palladium is ground into a 400-mesh fine powder, and the fine powdered palladium is put into water, ultrasonically dispersed for 25 minutes, and then, the auxiliary component potassium oxide is added to the solution, and the potassium content is 0.10g, palladium is mixed with the auxiliary component, ultrasonically reacted for 2 hours, and colloid is made;

[0039] Step S2, disperse 100g of the selected carrier into the above colloid, place it in an 80 degree water bath for 40 hours, after the deposition is complete, filter and wash, put the filter cake in an oven, the initial temperature of the oven is 70 degrees, press 0.2 degrees / Make the oven temperature rise to 90 degrees at a heating rate of 1 minute, and dry at 90 degre...

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Abstract

The invention provides a catalyst for eliminating ozone under room temperature and ambient moisture and a preparation method of the catalyst. The catalyst comprises a carrier, a noble metal active component and an auxiliary material component, wherein the noble metal active component is palladium; the noble metal active component accounts for 0.01 percent to 0.1 percent of the total mass of the catalyst according to the amount of a noble metal element. The catalyst provided by the invention has the advantages that when the catalyst for eliminating the ozone under the room temperature and the ambient moisture is used in a colloid drying process, a crossed drying method of high-temperature drying of a drying oven, low-temperature freeze-drying, and high-temperature drying of the drying oven is adopted; the prepared catalyst has a uniform pore diameter and a large specific surface area, and has a very high elimination rate on the ozone. According to the catalyst for eliminating the ozone under the room temperature and the ambient moisture, provided by the invention, the percentage of the used noble metal active component in the total mass of the catalyst according to the amount of the noble metal element is extremely low, so that the cost of the catalyst is effectively reduced.

Description

technical field [0001] The invention relates to a catalyst, in particular to a catalyst for eliminating ozone at room temperature and normal humidity and a preparation method thereof. Background technique [0002] Ozone is a gas pollutant that is very harmful to human health, especially in a relatively closed indoor environment. Ozone can react with almost any biological tissue and is very destructive to the respiratory tract. It is generally believed that after ozone is inhaled into the body, it can be quickly converted into a highly active free radical - superoxygen (O 2- ), which oxidizes unsaturated fatty acids and causes cell damage. According to the Canadian Center for Occupational Health and Safety (CCOHS), "Ozone can irritate and damage the nasal mucosa and respiratory tract. This irritation can cause chest tightness, coughing, and sore throat in mild cases, and in severe cases, asthma, which can lead to the deterioration of upper respiratory tract diseases. Cause...

Claims

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Application Information

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IPC IPC(8): B01J23/58B01J27/25B01J23/89B01J35/10B01D53/86B01D53/66
CPCB01D53/8675B01J23/002B01J23/58B01J23/892B01J23/894B01J27/25B01J35/1019B01J2523/00B01J2523/12B01J2523/31B01J2523/41B01J2523/824B01J2523/13B01J2523/3712B01J2523/847Y02A50/20
Inventor 刘钢
Owner BEIJING YIJING YOUZHI ENVIRONMENT TECH CO LTD
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