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Oxidative catalyst and sterilizing method for catalyzing oxygen sterilization in air and purifying indoor air under room temperature

A catalyst and air technology, applied in disinfection, deodorization, etc., can solve problems such as high cost, complex system, and human injury, and achieve the effects of low operating cost, simple preparation process, and low manufacturing cost

Inactive Publication Date: 2005-11-09
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main problem in application is that as indoor air purification and disinfection equipment, the system is too complicated and expensive, such as patents 96197457.5 and 98240831.5
What's more serious is that, in addition to complicating the system, the use of ultraviolet rays can also cause ionization of the air, resulting in new air pollution
In addition, the inadvertent leakage of ultraviolet rays can cause direct damage to the human body.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Take 100 grams of γ-alumina powder and soak it in the mixed aqueous solution of cerium nitrate, ferric nitrate and chloroplatinic acid at a given concentration, stir for 1 hour, dry it overnight at 90°C, then raise the temperature from 100°C step by step in the air to 500° C., kept for 3 hours, and cooled down to room temperature, that is, the catalyst of Example 1 was obtained. The platinum component load of the finished product catalyst is 0.1% (metal element weight conversion value), the iron component load is 15.0% (metal element weight conversion value), and the cerium component load is 5% (metal element weight conversion value). value).

Embodiment 2

[0019] 0.5 gram of embodiment 1 catalysts are placed in the tubular fixed-bed reactor to react, and experimental conditions are as follows:

[0020] Composition by volume: nitrogen: 78%, oxygen: 20%, water vapor: 1%, carbon monoxide: 1%, reaction space velocity (GHSV) 10,000 / hour. At 25°C, the conversion of carbon monoxide to carbon dioxide was 30%. At 30°C, the conversion of carbon monoxide to carbon dioxide was 45%. At 35°C, the conversion of carbon monoxide to carbon dioxide was 55%.

Embodiment 3

[0022] 0.5 gram of embodiment 1 catalysts are placed in the tubular fixed-bed reactor to react, and experimental conditions are as follows:

[0023] Composition by volume: nitrogen: 78%, oxygen: 20%, water vapor: 1%, formaldehyde: 50 ppm, reaction space velocity (GHSV) 10,000 / hour. At 25°C, the conversion of formaldehyde to carbon dioxide was 15%. At 30°C, the conversion of formaldehyde to carbon dioxide was 20%. At 35°C, the conversion of formaldehyde to carbon dioxide was 30%.

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Abstract

An oxidative catalyst and its disinfecting method by catalyzing the O2 in air to disinfect and clean the indoor air at ordinary temp are disclosed. Said catalyst is composed of the porous inorganic carrier and the active components chosen from Pt, Au, Ag, Pd, Cu, Fe, Ti, Zr, Sn, W, Mo and Ce, and can play its role to kill virus, bacteria and fungus and remote volatile organic substances and CO from air by oxidization.

Description

technical field [0001] The invention belongs to the technical field of environmental catalysis, and relates to catalyzing oxygen in the air to kill microorganisms adsorbed on the surface of the catalyst, simultaneously oxidizing and removing volatile organic and inorganic pollutants in the air, achieving the purpose of disinfecting and purifying the air at room temperature, and improving indoor air quality. technical background [0002] Since the outbreak of atypical pneumonia in my country, the pollution of indoor and ventilation systems and the spread of viruses have received unprecedented attention. The indoor air sanitation measures taken by hospitals that treat patients with SARS are mainly ventilation, drug disinfection, and restrictions on the use of central air conditioners. However, the problem is that a large number of disinfectants will have adverse effects on the human body and the ecological environment, and air conditioners have to be used in the hot summer. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L9/00
Inventor 贺泓杨敏余运波杨清香张长斌冯庆彩董小平贺小慧
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI